Easy DIY Graphene SuperCapacitors
ฝัง
- เผยแพร่เมื่อ 10 ธ.ค. 2015
- This video covers the complete capacitor build process.
Link to materials used: laserhacker.com/?p=543
Robert Murray Smith build guide book: www.smashwords.com/books/view...
Other Projects: laserhacker.com
Support future videos: / lasersaber - วิทยาศาสตร์และเทคโนโลยี
I watched the video all the way through. Since you took the time to make such an interesting video, I'm going to take the time to offer some constructive criticism. 1. Phosphoric acid is non-volatile, and is somewhat hygroscopic. It will not dry out under normal conditions. Something else is happening in the cell to give this appearance.2. Phosphoric acid directly attacks aluminum, and will also dissolve copper if it's made anodic. It will do the same thing to stainless steel, and pretty much any metal other than platinum and some other expensive noble metals. Carbon, whether it is glassy, graphite, graphene, etc, is a less-expensive material that will work as an anode in this electrolyte system. The problem is that the bulk conductivity of graphene electrodes is low, so a metallic collector plate needs to be used, like you are already using. The catch is, that the electrolyte cannot touch the aluminum collector plates, not even a little bit. You have the right idea by mixing graphite with polyurethane, but you probably need multiple (electrically conductive) coats to make sure that all metal parts are completely protected from the electrolyte. Personally, I use wax that has been mixed with a 50/50 mix of graphite flake and nano-powder. This adds bulk and surface conductivity to the wax, while the wax remains hydrophobic and protects the metal collectors.3. Mixing PVA with the phosphoric acid will give a less conductive, but more mechanically stable dry-film electrolyte. This avoids the hassle of trying to seal a wet cell.4. Oxygen will oxidize graphene at the anode, causing it to lose surface area and conductivity. Even aqueous low voltage cells need to be sealed to keep air away from them. You have the right idea, but sealing would be even easier if you use a dry-film electrolyte.5. With your current cell chemistry, it will rapidly lose capacity if it is maintained over 0.6V. There are ways to get a higher voltage, such as using asymmetrically-sized electrodes, but 0.60V to 0.65V is a standard practical limit for graphene electrodes with a phosphoric acid electrolyte.6. 100 cycles isn't much for a supercapacitor. However, once a test is run out to 1,000 cycles, it's generally possible to see how the cell quality is trending. One little secret among energy researchers is that cycle life isn't necessarily the best test of a supercapacitor. A more strenuous and useful test is to maintain full voltage across the cell, and see how the capacitance drops vs. time. If it maintains its capacity at rated voltage for 10 years or so, it's a good cell. If it gives out after a few hours, it's very bad. Ha ha! ...or the charging voltage is too high...The cells that I've put together only work up to 0.6V. However, after they've been charged up, it takes at least a month for them to self-discharge down to 50% of their initial energy. That's pretty much up to the level of commercial supercapacitors.
+WGTR
Great information. I will reread it a few times to better understand it and then start experimenting with some of your suggestions. Thanks for sharing.
Correct me if I'm wrong. When this devise can produce electricity right after it was made without the need to charge up first, it is a battery, not a capacitor. All capacitors need to be charged up before you can draw electricity from it. What he has created is a rechargeable battery, not a capacitor.
+simon6071 It's not always that simple. Electrochemical capacitors can have faradaic reactions like a battery, and batteries can also have non-faradaic capacitance. It depends on electrolyte chemistry, operating voltage, and electrode structure and composition. The more like a capacitor the cell is, generally the lower the energy density and higher the cycle life. The more like a battery it is, energy density becomes higher and cycle life shortens.
+WGTR
Thank you for the information. Looks like an electrochemical capacitor is a hybrid of a capacitor and a battery. Pretty cool.
But I wonder how that Graphene SuperCapacitor could create electricity without charged up first. Would you be kind enough to tell me the chemical reaction involved?
tell me, how do you think lactic or glycolic acid would work?
Guy's read the description! There IS graphene in use here. It's in the form of nano-platelets which have been pre-made in a lab that he ordered from (Angstron materials). Activated carbon has NOTHING to do with graphene, it's a common material used in making supercapacitors. Also, look up what a supercapacitor is before you start commenting about "oh it's a battery, not a capacitor", or "why u has electrolyte touch conductor, u no know how cap work!? omg!".
Ty for taking a capacitor apart. I was really going to do myself, but you totally saved me time.
For a DIY project this is hugely impressive, way to go man !!!
Very nice job! A lot of people do not realize how much work goes into making videos like this.
+electronicsNmore
Thanks, I really appreciate it.
lasersaber What's the charge time and the weight????? Could you make such a battery/capacitors to charge up faster and last longer than a lipo for use in multicopters????
any one want to join me with theses kind of research thing please contact me at owaisf.2008@gmail.com .....these kind of super capacitor have low energy density about 20 wh/h to 30 wh /kg so putting that in a ebike will increase its weight so....we need to try different combinations...and lithium ion battery has 200wh/kg of energy density ...so this is also a reason of lithium ion battery is being widely use ....so come join me and help me....
owais farooqui,, dear sir,, I think that super capacitor, or rather it should be a mixture of battery and capacitor, I mean that the anode and cathodes of the battery should be so close that they will work as capacitor as well that the plates should have a construction like spinach containing nano holes for keeping more charges ( naturally exists with platinum and palladium, the nano grafen can contain a huge surface as well
owais farooqui, this is my emails vipser64@gmail.com, serbestabbas@yahoo.com
The first one is the one that I open frequently
Hi Lasersaber, love your videos. The aluminium and charcoal do form a battery until the air is consumed. If you have two alum plates as collectors and two carbon plates on top of them, for some time until the oxygen is consumed you will be oxidizing the alum and getting some voltage from it. Look up the alum air battery using carbon. At least you sealed yours here which should, hopefully over time, consume the oxygen provided you don't overcharge it (~1.23v). You can verify this by using one of your electrodes, place it in electrolyte and put the meter on the alum and the carbon. You'll get a voltage in the air! And the carbon itself holds a lot of air too, which can be a problem to remove.
I really do like your videos and hope you can post more about your supercapacitor ideas and experiments. I have done a lot myself!
+Hooch Lover Yes, I have an idea.. Has anyone tried Hydro-Chloric-Acid (HCL) for the electrolyte?
Hooch Lover A
Thanks for taking the time as always, I can't express my gratitude enough. I am slowly experimenting with electrolytic capacitors as well, as I am fascinated with electrolytic processes right now. All part of a very long term project that will hopefully yield some sustainable value for us all. Or at the very least, be a ton of fun to play with ;)
+Diadon Acs (Conscious Energies)
Thanks, I appreciate it. I am testing electrolytic capacitors with the latest Tesla Torch circuits right now. As much as I love supercapacitors I would prefer to use electrolytic capacitors where possible.
A straight to the point kind of video, very informative, well done ✅
You don't want the electrolyte to ever touch the aluminum and especially not the terminal joint. It will lead to the capacitor having a high self-discharge rate. The bubbling you were hearing was most likely the electrolysis happening at the unprotected edges of the aluminum plates.
th-cam.com/video/KiLTEjm8zLw/w-d-xo.html
This is a graphene solid state generator circuit using graphenes thermal motion to generate limitless energy. Please develop this tech.
laseraber,
Great video. I love your experimental technique and care that you took to make sure that your supercapacitor were properly sealed. I am very interested in any subsequent work you have done.
I have an interest in super capacitors because I believe, in theory, they should be able to take the place of some if not all the function of lithium ion batteries with a number of advantages including cost, charge rate and longevity to name a few.
I don't remember a lot about about electricity (I am a chemical engineer); I have some questions and comments
- to those who mentioned that graphene is a monolayer, they are correct. However, activated carbon is a complex structure and may contain multilayer graphene
- graphene is planer and electrically conductive, other types of carbon are three dimensional and non as conductive; it would be interesting for you to characterize your activated carbon (ac) by conductivity
- why do you need a conductive layer (your phosphoric acid impregnated cloth) between your charged plates? Doesn't a capacitor have an insulating medium (dielectric?) between the plates? If you left the charged capacitor isolated for a period of time would the charge between the plates flow internally through the phos acid?
- the nature of the activated carbon is important for your experiment. Do you want high or low surface area, high or low conductivity. I don't believe the conductive support plates are as important
It has been a couple of years since you posted this. I hope you still are working on this.
Been watching some of your videos lately and have really enjoyed them. Have read the comments as well and would just like to say, sometimes people try to shoot down what they see you trying to do and others try to share some of their knowledge and lift you up. Don't take any of it personally and let it discourage your efforts to learn and expand on your efforts. At least you are trying. And many useful things today were accidents in a lab somewhere, or in a garage. That being said I would like to share something with you that really has no significance to your experiments but might be something helpful to you someday in some experiment. I worked for twenty years in an plastics injection moulding facility and we worked with many plastics. Two of my favorites were Polypropylene, and Polystyrene. The reason I found these two materials interesting was because of the amount of static charge they would hold. We used vacuum systems to load the plastic from large gaylord boxes through polypropylene hoses. While the vacuum loaders were moving polystyrene through the hoses if you got too close you would get quite the shock. Sometimes You might see a two inch long spark zap you. The polystyrene was highly hygroscopic and you could feel the static charge in the gaylord as soon as you took the top off. I found that fascinating. I also thought it was pretty cool that when you pulled parts off the molds they too had a strong static charge and we would constantly have to blow parts off to remove dust before packing ,bagging, and shipping. My whole point to sharing this is to say you might want to try some of this material in a project sometime. And if you are looking for some for a project you could probably request a Pelletized sample from the Monsanto Corporation. Keep on experimenting !
Thank you for sharing your knowledge with the rest of us who actually want to learn something useful.
If you take apart a plastic film capacitor you'll find very thin plates and lots of turns rolled up, probably even more than in the supercap you took apart. The supercaps get their high capacity from the porous surface of the electrode material which creates an enormous surface area.
I remember when Nerd was a insult. You nerds are amazing. I wish I was one but not smart enough. Nice tools too. Thanks for sharing.
Haha !!! You intellicist !
Dude not all smart people are nerd ex me
brilliant preparation, knowledge, patience, presentation and delivery. I'm impressed
You made it look so easy! That's so good
great video if more people like you were working on this we would have the battery problem solved with in a few years
Skelcap is making them soon according to their website. All on pre-order
A technical suggestion for building these.. As a technician for years, I can attest to the importance and problem-preventing necessity for implementing "strain relief" on any wire entrance / exit points on devices... So if I were to build one of these, I would carefully place a knot in the wire right against the inside edge of the bag seal inside the bag so that there is a knot to prevent pulls on the wire from stripping the wire out from its sheath and placing strain on the capacitor.. Put the strain on the bag seal instead. Use the ol' wire knot to prevent accidental pulls from destroying your capacitor or creating unreliable pull-damage related intermittent connections... Its worth doing. Trust me.
You are so cool. You deserve a way bigger fan base
Excellent Video, presented in a very clear and humble manner, one of the best DIY video's I have seen on Utube, it will be very interesting to follow further development of this science, Keep up the good work.
amazing! I'm surprised at how long that lasted
You should make a setup that logs volts and amps over time so you could graph a charge/discharge curve. Maybe test with different loads like constant power loads and constant current loads. And you could even automate this procedures with a series of relays and a microcontroler. measuring temperature is also a good idea.
This th-cam.com/video/wtbcaWnybzs/w-d-xo.html .
Very clear and straight forward explanations , I love this video
Hey Laser: Try to watch most your videos. You and I share a lot of the same interests therefore I find your videos very interesting!
Keep it up Bud and looking forward to spending my day catching up on your Vids.
Which is the concentration of that phosphoric Acid, I know H3PO4 is used as an etching agent for Aluminum, Wouldn´t it corrode your plates?
He used graphene powder - but with how ti is applied all properties that would distinguish it form normal graphite vanish.
Also the way it is build quite a lot of energy will be stored chemically, so more like a battery-supercap hybrid.
The poster has made a standard electrochemical battery. This is not a capacitor.
Even though that most of the people that watch this video cant really make this, its nice to see that you helped people understand better
Great video. Thanks.If I may add a suggestion. Before doing the last seal, clamp as much of the pocket to remove as much air as possible. Once there is air trapped inside, no amount of taping will bring the plates closer together. Nice job. Thanks.
So, as a chemist I have to ask... why not leave a little more paper on one end, put the whole thing in a tray for an hour or so and let the phosphoric acid seep into it like you're performing chromatography? That way I think you get the best spread of the electrolyte - it seems to me like the graphene sheet on the side that you cover it up with later might leave some space in between at some spots if you do it this way?
That looks too easy. I have to try one. Thanks for sharing.
MUDDy
Very cool. Thanks for posting all your videos. keep up the great work.
For making electrical connections to aluminum plates you might want to try the low melting temp aluminum repair alloy sold by Harbor Freight. That way there is nothing to come loose. Also you can use this alloy on fairly thin metal. In old ads they used to fill a small hole punched in an aluminum soda can. You WILL need to apply some kind of insulating coating over the repair alloy!
year 2019. Not any news? Still no a 3d graphene /nano carbon printer ?
it would be interesting to see how it reacts to a charge from a PV panel
+Paulman50
They should work fine in solar applications. As soon as I am able to easily make larger capacity packs I am planning on using them with solar.
Very cool! Use a ball mill to get super fine particles. Graphite is not a flat molecule but if you slice it very thin, say tape and strip a layer it becomes flat "graphene"
Awesome stuff, I think I would cut down the aluminum and leave a tab in opposing corners the size for a spade connector to slide on after , keep up the awesome vids
Great how to video. Did you check the voltage on the cell before you put the charger on it? I'm still wrestling with that issue. I don't want to make another galvanic battery that looks like and acts like a super capacitor. A hybrid is OK if it doesn't die for a long time. So far I'm not there yet. Mine work for awhile then they expire.
+Lidmotor
They start off flat. You have to charge them to get any action from them in my experience. Mine usually seem to "expire" after the electrolyte evaporates. That is why I am trying to seal them better.
+lasersaber Thats what i thought, just pulling your chain to see if you're real or ai.
+lasersaber That is excellent news. I will press on with this. I have all the materials and have made mine in a similar fashion to yours. I need to keep trying. It is that simple.
+Frenchie
No worries. While I do not answer all questions, I do read them all and often try to answer as many as possible in future videos.
hey brother , my idol lol. yeah you here. love you brother, your gift to mankind is truly touching to me. you are a example to us all. please help me out we doing the same thing bro and we doing it for the benefit of everyone. facebook.com/stephane.fyfe peace and thank you brother.
Excellent!!! Are you contemplating building a charge-dump/'data-logging circuit using a micro-controller? I have been working on one to conduct home-made experimental super-capacitor tests.... Mine is based off of an ATX-PSU... I'm waiting on a buck converter to get my 2V source.... Awesome stuff as always! Keep up the super-awesome work... :D
+Binj Komisar
If you get that working I would be very interested in it. Maybe I could send you a capacitor to test for me if you are interested.
lasersaber
Sure, I would love to test an experimental super-cap design of yours for energy density. I have the hardware mostly done for the cap-testing project. I just have to do some coding. I'll get back to you in the new year, I should have it working (
I have made progress. I will have to make a video soon. But I am 99% sure we are good to go.
+Binj Komisar congrats man, I look forward to your video too! Keep up the good work, besides everyone trying to make money off supercaps I feel like if enough hobbyists get the news out there then we can provide a much cheaper energy storage solution that anyone can do in their home.
Hooch Lover
Thanks Hooch Lover. I agree 100% with you. Hopefully the open-source community can come up with a cheap, non-toxic, version of the super-cap that can be made by anyone anywhere... Testing for energy density is a must for us to know if we are heading down the right track..
Peace Hooch Lover.
Ben
You've hit the nail on the head with the goal of Samsung's upcoming graphene composite batteries. Everyone I've mentioned it to has asked how much longer it will last, and the answer... it won't. It will have about the same life. But it will charge in about half the time of current batteries. Which is crazy. Coupled with wireless charging being almost everywhere now, those phones will never die
Awesome Video!! this with your crystal cell should make a team!!
BTW, I've started a thread on EEVblog about this video: www.eevblog.com/forum/projects/diy-18-farad-capacitor/ It might be just a battery. Would be good to measure how often it can be fully charged and discharged, because this is the main difference between batteries and capacitors (besides the bigger capacity of batteries). And I guess if this is true, it wouldn't matter much if you use graphene or not, maybe do a test without graphene and only the activated carbon, too.
+Frank Buss how often or how fast? its all just minor details. do batteries and capacitors store potential energy? YES, do they require an input electricity and provide output as electricity? YES so they are in general the same thing. it has been seperated into two categories due to patent trolls and different uses, but at the end they are both doing the same thing with variable means...like a truck is bigger and has more power than a motorcycle yet they use the same combustion engine mechanics...for the same reasons.
it can be a mix of a capacitor and a battery in one construction...it does not matter.
what does matter is the way we can use it and how its different and if better from current "commercially" already built products. is it faster to charge? is it lighter in weight? is it cheaper to manufacture? does it have bigger/more life cycles? is it more recyclable? and other questions that are much much more important than "is it a battery or a capacitor?"...details and long page specifications are nice...just not always the most important. EEVblog as i see it is a warmplace of couch technicians who like to baffle about so minute details...while they are not that important...see the bigger picture please.
How often and how fast are important specifications. Lithium based rechargable batteries have 50% capacity after 1,000 cycles. If this is like a battery and performs worse regarding the number of charge cycles, the other things like price etc. don't matter, because it has much less capacity than a normal battery. And as I showed, there are already better cheap SuperCaps. But still impressive for a DIY capacitor/battery, and maybe he can even improve it.
+Frank Buss
Thanks for starting the thread at EEVblog. I see that they came down pretty hard on me for my little speech about higher voltage charging. I was tired and not expressing myself the best. What I was trying to say is that on my power supply at 30 volts there seems to be a larger current dump at first. This may be because of some large electrolytic capacitors in the power supply. Also because it is a regulated power supply it will not be able to output more than 5 amps. Ideally I would like to be able to charge at a higher amperage than five amps. Since I am limited, I just set it at 30V, let the power supply dump the initial current into the supercapacitor and then charge it at 5amps until the voltage reads around 5 volts on the supercapacitor. For those who are worried about the jump cut you can watch the whole process on a early video here: th-cam.com/video/d5cOebnCvXo/w-d-xo.htmlm54s
lasersaber The output capacitors of the power supply might be only some 1000 uF, a small fraction of your capacitor. Try to compare the charging time, it should not differ wether you set the output voltage to 5 V or 30 V.
Another question: where did you get the graphene powder? You didn't list this on your website. And did you compare this to other materials, like graphite?
+Frank Buss
I agree that the capacitance of the power supply is negligible, but when you are charging in a few seconds I think it makes a difference. Apart from that there is a difference between charging it at 5V or 30V. When the supply is set to 30 volts it will deliver more amperage at the 5 volt mark as it tries to climb past the 5 volts. In other words at five volts it will be be pushing a full 5 amps at the capacitor. If you set it to 5V the amperage will taper off as it approaches 5V. That is based on my understanding from experience. To do it properly you also should watch the voltage on the capacitor itself with a separate meter. As the voltage readout climbs on the power supply the voltage on the cap lags behind. It has to do with the small gauge wires coming from the power supply to the cap. Anyway sorry about the confusion. I did not explain myself well at all in the video on this topic.
The link to the graphene powder is the first link in the list over at: laserhacker.com/?p=543
Here is the link itself: www.amazon.com/gp/product/B00OYAM7OO?
robert murray smith has to be the goto guy for this....youtube search him
A great how to. There are some differences to my own, mainly in your use of machinery for a clean build...thanks for showing your method :)
+slider2732
Your work is coming along great. Have you tried using KOH?
lasersaber
Haven't tried KOH yet, but do remember TinMan brought it up too...we had to go to MN, wife's Dad passed away, so am intending to experiment more now that we're back.
Slider2732,, or use Na2CO3 SODIUM CARBONATE,, NOT HAZARDOUS
Brilliant! Thank you for sharing!
Food grade activated charcoal from coconut husks for detox is a very fine powder like talc.
That should work well ???
+Stewart Buckley That is a fantastic idea! There are many people talking about using hydrothermally carbonized coconut husks.
Diadon Acs
Brush your teeth with it :)
+Stewart Buckley Yeah you can also use charcoal you make yourself, I don't think you'll find that much difference from store bought stuff when you powderize it in a blender or ball mill. Every activated carbon source I've bought I question the quality of it. Doesn't act that much different from my own stuff. Maybe you will have a different experience though!
Emergency will do :)
Carbonizing coconut husks, help fiber, or even kelp in an ammonia atmosphere will create nitrogen-doped carbon perfect for these cells.
it is almost a year later now. how has this experiment fared over this time? how many charge cycles? did you see increase or decrease, etc?
I'd like to know too, did you ever get anywhere with this?
James Searle I can tell you absolutely he did not
Shame, it looked quite a nice design.
James Searle It might be better if you use stainless steel, one person posted, but trying to use aluminum foil was all a no go for me , plus Im sure you may need to tame the phosphoric acid, I might be wrong.
+YEAR OF THE ROOSTER Aluminium is cheap and easily available, but I agree it doesn't stand up well for repeated cycles, especially thin foils and high currents. Especially with water based electrolytes because the oh- ions attack it. At least from my limited experience.
For pressing the granules onto the plates, try using parchment paper as a divider, and foam as a medium to press on. =]
Increases in capacity with more charge-discharge cycles usually means that the electrodes are "forming". That sounds like an ionic reaction instead of moving and storing charge. If you want a galvanic cell that's no big deal. If you want to stay with a capacitor there is a voltage for each chemistry that you don't want to exceed of you force an ionic reaction and you have "ruined" your capacitor even if it still has "capacity". I do enjoy watching your videos. I came late to the Graphene party, but I'm trying to learn!
Why do you use the medium grain carbon instead of the fine particles?
For încercase surface area
@1:05 Rants about surface area contact being most important.
@3:05 "The really thin powder stuff I'm just gonna wash down the drain."
Where are your informative videos?
Good work! Thx!! Happy New Year
I've done similar using galvanized flashing and copper coated plumbers ground bar and salt water . It ran for 3 days. Then lit small lights. But the salt blackened the inside building up a barrier. I liked your videos
Hi, Can u send me the details PLZ.
lol
the best scene of movie is watching this motor exhaust a battery,
You should try vinegar etching your aluminum plates. You'll get a crap ton more surface area.
This is a really good thought. Actually, using a decent porcelain etch solution you find in some tile and bath coating kits would be even better. Mechanical roughing is far less effective at creating surface area and a bonding surface.
Okay but that's just the current collector
superb video as always.thank you sooo much for sharing.my next purchase is a Solni and some bulbs
Love the video! I suggest to use DVMs that will send the voltage and current values to a computer, whereas it can be graphed for the charge and discharge cycles.
You should be able to use least squares to calculate capacitance.
how much capacitance do you get?
most important question yet he neglects it...
+NatureHacker haha oh well what are you going to do
27:38 ... Well, Hello there little bug. (on the red meter)
Amazing video thank you for the concept
Pls keep us updated very interested in making cheap reliable capactors
i didnt see any graphene in this video. graphene is 1 atom thick, and what you have is just fine carbon powder
watch again
Yeah, there's no graphene in use. He can call it "graphene" all he wants, but grinding up activated carbon does not get you graphene.
+Ouroborus Seven guess that's why he has a jar of actual graphene @ ~6:30
Michael Kessler its graphite, not graphene
Graphite is actually just stacked layers of graphene, in case you didn't know. What you see as a micrometer speck of carbon easily contains millions of carbon atoms, all neatly arranged into stacked layers of 2-dimensional hexagonal lattices, AKA graphene.
You know that graphene is only 1 atom thick; I hope you aren't really expecting to be able to see a single sheet without magnification.
OK.. there's a lot of confusion and misinformation in these comments. The material he's grinding up has nothing to do with the graphene. It's activated charcoal for increased surface area of the capacitor. He explains early on in the video that surface area is the key to producing efficient supercapacitors. "1 gram of activated carbon can have surface area equal to that of a tennis court". He paints the graphene solution onto the aluminum plates, then presses activated charcoal to increase surface area.. im guessing the charcoal is very porous and that's why its surface area is so large.. Graphene is a "2 dimensional" material, but that is only an indication of its composition. More than one layer of graphene can be stacked while still maintaining the efficacy of graphene, due to the sp2 bonded atoms on one plane. Adding additional planes doesn't introduce additional vertical bonds of the graphene, thus maintaining its identity as graphene and not graphite...
^One of the rare people on here that gets it, lol
It's almost impossible to purchase that scarce metal, Aluminum, outside of North America. We prefer to use Aluminium, which is a lower-cost substitute, and which has the advantage of being the most abundant metal in the Earth's crust!
jk, so have a laugh, and don't be triggered! 👋 🙂 👍
13:32 you really wanted to touch the phosphoric acid, nice save.
this is a great video, I have been educated, and who can't use power?
Thanks
Impressive R&D spirit!
How did you know what voltage to charge this graphene cell to? looks powerful since it can run a motor for so long
i'd like to have seen a capacitive measurement
Would this not be a graphite capacitor
So very nice explanation, easy to understand
great ambitions, great results dude
SuperLegit
Quality video. Not a graphene supercap. More likely a " Ryden Dual Carbon Battery" clone, by Power Japan Plus.
Not too many people spotted it :P
TOuché Frenchie!
Waste of time! 5MIN. WATCHING a stupid motor run down.
Very neat. Do you get different results with different acids for the electrolyte?
You guys ( nerds ) are amazing,so much knowledge its scary.....just give me the finished product and i'm a happy bunny.....cheers.
you need a ball mill to get the carbon to fine powder.
I was surprised he got rid of the very fine powder at the beginning of the video, that would have been perfect
I estimate this would be a 10 farad capacitor. But that's impossible with only that tiny surface area used in this "capacitor".... I think you just made a battery :)
The carbon has a kind of spongy structure which hugely increases its surface area. Still, supercaps are blurring the line a little bit.
Love your videos and love the links to other youtubers you've led me is to, you guys have restored inventive childhood dream machines in your application and share of the science. My question is, how do you make your own graphite out of an organic compound. Say I've got an abundant of hemp that I can make charcoal with, do I just make my charcoal and oxidize it with calcium chloride as many do to make oxidize charcoal for many uses including Medicine, OR, do I need to carbonized the organic compound I'm cooking WITH a catalyst during the process of Turning the organic compound into carbon? Thanks sooo much for your time and share.
You just unlocked the Secret to Energy Storage and Utilization. It is indeed all about the surface area. Because electricity is a unit of heat within a volume of a medium which we call 'Voltage'. When you restrict the surface area, you make these units of heat compound on themselves, causing heat or 'Amperage'. A Primary coil has many windings, covering a large volume of space. In order to turn this electricity into usable electricity, we then wind up a secondary coil, to take voltage from the primary in a joule thief fashion, and we force that voltage into a smaller surface area, creating what we call 'Amperage'. So when you think of Electricity, you should think of it as a Heat Pump system. In the large surface area where the "Electric Gas" or Voltage which is units of heat encompassing a large volume or 'Surface Area'. Then this is the 'Cold' side, but we can create a 'Heat Exchanger' which we call a "Secondary Coil" to take that 'Electric Gas' and compress it into a smaller surface area and this is the 'Hot' side or the evaporator side. This is now usable 'Wattage' because it has Voltage which is compressed and when we put a load on it, the load releases the heat from it's confined state, to utilize it to do work for it.
great video but very misleading title its definitely not graphene.
+Gregor Scott You are half fight ;) It is certainly not single layer graphene.
+Diadon Acs (Conscious Energies) nah brah graphene = single layer 2d structure. he's using activated carbon same element but exponentially less surface area and lower conductivity.
+Gregor Scott
I do see where you are coming from. The bottle I got off amazon said it was graphene powder. So far that powder has worked the best in these experiments. I may try ball milling my activated charcoal for a few days and see if I can make something myself that works as well or better. I am thinking that the same charcoals that make the most powerful gun powder might also make the best super capacitors. Believe it or not charcoal is one of the most important variables between good and bad black powder.
+lasersaber it wasn't very clear i herd you call the powder activated charcoal in the video. I know the stuff on amazon can be questionable in actual percentage of graphene if any. I cant wait to more results from your capacitors.
Do you know what a colloids and nanoparticles are Gregor? Don't mistake a graphene sheet with graphene. There are more ways to organize the organic lattice of carbon, then you can shake a carbon nanotube at ;)
anyone else see the insect disappear at 28:50 . I mean it starts climbing and then just fades out.. interesting
near the red meter>? Hmm how observant of you! But if you look at the timer its 10 seconds later between 28:50 and 28:52. Another mistery solved
Ladybug
At first I was like: "EWWW!!! A COCKROACH!!"... but then: "Ahh, nvm, its a ladybug"
Yeh....! check the mobile time also jumped 10:27 to 10:38....so insect travel to the space time........ ;-)
And at the same time, a hand appears at the bottom left. Weird.
I really enjoyed this video.
That ladybug has a button cell in it !! lol keep up the excellent work :)
this is a dual carbon capacitor.
graphene doesn't make a supercapacitor, electrolyte does. The graphene in this build is worthless, graphene mixed with polyurethane has zero conductivity.
NatureHacker We assume you can prove your statement right?
Thats not entirely true, from what I understand from feedback that the poly insulates the ali from the acid while the granuals pass the current to the plate in numerous point contacts
@@NatureHacker I think so
You lost me when you called large chunks of carbon oriented randomly "graphene". Doesn't graphene mean a very specific hexagonal sheet arrangement of carbon atoms? That surface area is key to maximizing capacitance is reflected, iirc, by equations developed by Maxwell or Faraday back in the day (like more than a centruy) so good to know that people are catching on to this marvelous fact. I respect people for playing with this stuff and learning but I fail to grok the "instructional" nature of the videos when very little seems to have been learned yet and the information transferred is nearly content free.
+Marty G technically anyone who has ever used a pencil has produced some amounts of graphene. There are ways to concentrate graphite so its mostly one layer (graphene) or a couple layer material (close but not technically graphene) but its not actually perfectly flat on that 2d collector surface. The alum plates lasersaber uses wont be perfectly flat, and there wont be a perfectly flat 2d layer of graphene either. The hope I think is that by using some percentage of 2d graphene sheets in your ink, or whatever, that you have increased your conductivity and super cap effectiveness. Whether that matters much in the end compared to polished graphite alone I dont know. I haven't noticed much difference, I can polish graphite and get under 10ohms per cm2, which likely means I, like others, have a pretty flat surface that is good for electricity.
The chunks were activated-carbon sorted by mesh. The small jar of graphite flake material was probably "few-layer graphene", which people call "graphene" for short.
You can solder copper wires to aluminum with regular tin/lead solder. You cover the spot on the aluminum where you want to solder with oil (the stuff you put in a car engine) and solder the wire under the oil. You want the oil to completely submerge the area you're soldering onto.
candle wax also does work. The thing is clean the aluminium and protect it right way against oxidation
Wish I had a dad like you when I was little
so sorry but you use graphite not graphene
exactly
That is simplifying by orders of magnitude geometrically
@neur0n no. graphene is carbon with atoms perfectly aligned. not just a 1 atom thick shit. ffs how would it even be aplicable to large stuff as it is nowadays in labs?
TheLiasas he ordered the graphene. also he copied Robert Murray-Smith. who actually does this technique(more or less) to create batteries and super caps. the activated carbon is the only questionable part to me. why use it. Robert Murray-Smith was able to just use paper and graphene ink.
graphene is 1 atom thick 2-dimensional material, the carbon is perfectly aligned and that's what gives it it's strength. If you want to talk about 3 dimensional graphene, you will then be talking about graphite.
It is difficult to manufacture large scale without expensive equipment, so that is probably why it was sold cheaply as "powder." His capacitor is a rough build of what could be achieved, but it would probably be better if the graphene was pure.
One way I have heard about for getting a proper coating of graphene is to put the metal above it and boil carbon. It creates an even coat of fully bonded graphene. Mind you, not sure how that would go over inside a house.
PS- the next exciting 2 dimensional material apparently is achieved using boron!
The dust is what you want...
Wow heat shrinking them with one of those heat sealers was a clever way to insulate them i've never thought of that haha
Nice work, thanks for posting. Is there a problem with the electrolyte shorting the uncoated aluminum plates?
here is the redox reaction you have made Al + H3Po4 = AlPo4 + H3
Graphene is supposed to be one atom thck this is carbon not graphene.
You need to research what graphene is. ._.
No that guy is right. He might mean crushed graphite but this is probably crushed charcoal.
The carbon wasn't the graphene capacitor part. That's just part of making a supercapacitor, the activated carbon granuals are what create a large surface area to increase capacitance. The graphene was in nano-platelet form mixed with the glue like solution.
ether no, it wasn't. Those were just the smallest particles produced by the crushed charcoal. Not graphene.
6:22 graphene added to crushed charcoal.
Love videos like this. Will you discuss your findings in detail in future videos? I'd like to see how a pack of these can power a car or motorcycle, or how it can pair with a lithium ion to power a car.
This guy is a liar
This guy is brilliant. I’ve seen other videos of his and one within another and that’s where his cleverness levels up far beyond most, capacitors. Thank you again for another informative video and thank you for this channel. Hope all is well ⚡️-✊-✊🏻-✊🏼-✊🏽-✊🏾-✊🏿-⚡️ to us all.
You are using graphite, not graphene🙄
Ummmm, you may want to think twice about flushing activated carbon power down your drain, you may be setting yourself up for some very expensive plumbing repairs. Activated Carbon does not dissolve in water nor does it break down and it will accumulate in joints and low laying areas of your drainage system, worse yet if you are not on a city hook up, and can easily clog things up. Also that power is not very health to breathe either, so I would suggest a mask of some sort when using it. Coal Miners know this far better than I as they suffer from BLACK LUNG or the harmful effects of COAL DUST, which is NOT TOO DIFFERENT FROM ACTIVATED CARBON or smaller chunks of COAL....
Granted small scale anything typically is not harmful but it is something to consider. I enjoy your projects but some folks out there might not know this about Activated Carbon so this is my two cents, feel free to ignore my warnings as I am not here to tell anyone how to life but rather simply adding my two cents worth....
+Paul Bialozor
Thanks for all your thoughts. I normally do not build these over my sink! I just did that for this video. I usually build these outside with a full mask on. Your thoughts on the copper vs aluminum wire are also good. I am planning of vacuum sealing these but I have not yet been able to get the seal good enough for a strong vacuum.
You are the best. Thank you so much for your video.
Just an FYI from a chemist: Graphite is made of of multiple layers. Scientists call each molecular layer "graphene". (From Wikipedia: Solid carbon comes in different forms known as allotropes depending on the type of chemical bond. The two most common are diamond and graphite (less common ones include buckminsterfullerene). In diamond the bonds are sp3 and the atoms form tetrahedra with each bound to four nearest neighbors. In graphite they are sp2 orbital hybrids and the atoms form in planes with each bound to three nearest neighbors 120 degrees apart.[12][13]
The individual layers are called graphene. In each layer, the carbon atoms are arranged in a honeycomb lattice with separation of 0.142 nm, and the distance between planes is 0.335 nm.[14] Atoms in the plane are bonded covalently, with only three of the four potential bonding sites satisfied. The fourth electron is free to migrate in the plane, making graphite electrically conductive. However, it does not conduct in a direction at right angles to the plane. Bonding between layers is via weak van der Waals bonds, which allows layers of graphite to be easily separated, or to slide past each other.[15]
The two known forms of graphite, alpha (hexagonal) and beta (rhombohedral), have very similar physical properties, except that the graphene layers stack slightly differently.[16] The alpha graphite may be either flat or buckled.[17] The alpha form can be converted to the beta form through mechanical treatment and the beta form reverts to the alpha form when it is heated above 1300 °C.[18] ).
Activated carbon is made from coke or charcoal. It is not graphene but is widely used in batteries, etc. for its massive surface area due to pores. Use of activated carbon and graphite have largely been replaced by acetylene black in batteries.
awesome dude, but come on, it's not really graphene. love the production and how it's filmed.
That's not a cap. It's a battery. There is no way that a cap that small can hold that much charge! I've seen air gap variable caps that have 5 times as much surface area as you used and they are measured in pico farads. That's not a cap, it's a battery
hakachukai its graphene. Graphene can hold much energy
Look up electric double layer capacitors, they have way more capacitance than the typical kind.
You are simply the best!
Nicely done!