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- เผยแพร่เมื่อ 7 มิ.ย. 2024
- In the video "Polymer gel Electrolyte for batteries" I show to you how to mahe a polymer gel electrolyte based on KOH which can you use in batteries or some supercapacitors (solid state battery).
MAKE IT:
You need:
- 300 ml of water
- 10 g of KOH (Potassium hydroxide)
- 20g of PVA (Polyvinyl alcohol)
Into 300 ml of water you add 10g of KOH and 20g of PVA when you mix on magnetic mixer and heat the solution on around 90 degg C for some time.
When all the PVA particles are dissolved you are ready to add the solution in some container to leave that the solution is solid.
Full video will be on Patreon!
Instagram: cayrex2 - วิทยาศาสตร์และเทคโนโลยี
Dear Cayrex2,
very interesting video. I think this elektrolyte is a excellent part of an alcaline cell and easy to make. Many thanks for uploading!
many thanks
Thanks a lot! Very interesting :) looking foward to more!
PVA closslinks with citric acid when exposed to alkali- heat PVA a citric together- they stay liquid, but thick . Paint it on a felt cloth, then dip it in a solution of NaOh to harden.
Loved this one - can you update with any info on maximum charge voltages you've been able to try
Thanks,
Dennis
Adding fumed silica helps the ionic condictivity by allowing micro-channels of ionic liquid to be "trapped" in the polymer-gel. Very good for Ni-Fe battery chemistries
zacariah heim but this still cant be called ionic liquid, thats a misconception because ILs are practically complexed salts with a melting point below room temperature
Great Video.Thank you for video
Did you test if the gas formation is lessened with this electrolyte?
Interesting things. Even look interesting.
Excellent !!!
hello i wanna ask. im planning making hybrid supercapacitor with MnO2 as cathode and reduce Graphene Oxide for anode and im still searching for the electrolyte. may u give me suggestion for the electrolyte? i need solid polymer electrolyte
how long does it take to evaporate to form this kind of a membrane?
Hey Cayrex, do you have information about this particular battery, like for molecular structure or the gel matrix? If so can you send the link?
Hey Cayrex, how can you prevent the electrolyte from drying up? I put 50ml in small beaker, and after a week it all dried up.
I ask you to help me ... as I make battery of aluminum foil ... and please which liquid should be ... ???
This gel electrolyte can be also made for neutral salt battery ?
Hello, I started watching your videos by accident. I have a question. Can this mixture you made be used in rechargeable gel batteries? Is there any danger? I would be happy if you write an answer. Or do you have a video of a mixture we can use in gel batteries? I would be happy if you send the link. respects.
Hey, what is the reaction equation for the following experiment, what is going on inside the cell can you please tell me?
whats molecular weight of pva ? full hydrolized or super hydrolized?
Hey could you help me out with the receipt you had given me about 6 months or so ago to make a spherical shaped electrolyte? I broke my phone and lost the information.
Hi
Can u show impedance setup for this sample
how long can this be stored in the jar? Will or still harden if it's seal very good?
so i can just pour some out when I want to make a gel electrolyte/ separator ?
Hmm, I didn't try to store for long time. I think if you seal really good will be fine.
cayrex2
ok. thanks for the reply.
I left a comment on another one of your vids about making battery plates.
I think it world be good for ppl who don't have the skills, or equipment. but would like to experiment with these new battery chemistry n technology
@@dremaboy777 aha ok. Hmm not bad idea, I like your thinking. I have several electrode designs.
Can you mix graphite together ???
GREAT Presentation!!!!!! I Have KOH and Just Ordered PVH and Patiently Waiting for It. Do I really need The magnetic Mixer and Heater or can i just do it on the stove and stir it manually?and keep it Under 100C until its Mixed? Also I Can Also grind the KOH fine to dissolve easier.
Thank you Again ........Stash
Thank you. Yes, indeed you can mix it with hand on some hotplate. But can take some time that the PVA will dissolve 😴 You need to have around 90 deg C that the PVA will dissolve,.... a hotplate will be ok. Also if is to much for you to mix it with the hand,.... you can also stir with a drill ➡️ which is connected with some T or L shape profile for mixing. No need for grind KOH, because will dissolve relatively fast.
@@cayrex Thanks a million for getting back to me so soon Your the Best!!!!!!@
@@mjmurawski no problem
Hello, can you make mix for gel batteries?
Hi could you please tell us as a researcher if you want to improve the battery with solid electorate (polymer for example). from where you will begin and also which method you choose to characterized your synthesis? the stability? the ability to recharge or not and so on
How many hours have to stir the solution ?
Is this the same in gel vrla batteries?
Thanks for this video places can you added translating of arabc
Thank you. Arabic translation? Ufff I dont know arabic, sorry
I enjoyed the video. Any follow videos using this successfully in a battery?
Yes,.... nickel iron and nickel zinc battery
th-cam.com/video/0mYaei0O1sU/w-d-xo.html here I have nickel iron gel battery,... but the nickel zinc gel one is on my patreon
th-cam.com/video/pjoxC4kwA9I/w-d-xo.html
Thanks for getting back to me. Have you done any maximum voltage/amp ratings on this by chance to see how durable this is?
Plz make electrolyte for lithium ion battery .
Could NiSO4 be substituted for the potassium hydroxide?
Good question. In basic yes, but you need to play with the amount of NiSO4. I try several SO4 materiels and is hard to find good salt amount that you will add to PVA. Because when I add to much salt I end up with stone hard material, but if I add less salt I get flexible electrolyte but the ionic conductivity was bad.
how much zinc oxide to use in solution.
Could you plz tell me can we use this in lead carbon battery as well?
This one is more for alkaline battery, like zinc manganese, zinc nickel, nickel iron batteries,...
What about the urea concept would it work as well?
Uff, I dont know
Great idea
Would it be optimal for al ion batteries with the addition of some alcl3?
For aluminium air battery yes,.. but no for aluminium ion battery
@@cayrex Thanks!
And what would you suggest using instead for al ion batteries?
Urea : AlCl3 in 1 : 1.3 mole ratio. But of you can get,.... 1-ethyl-3-methylimidazolium chloroaluminate (EMIC-AlCl3)
@@cayrex Is it possible to suspend the urea : alcl3 mixture in CMC, in order to create a solid electrolyte?
@@sziluchannel ion transport will be not so good in that solid. But yes, you can try. Urea and AlCl3 will be more or less solid/gel at room temperature.
how many hours did it take for the electrolyte to dry?
Depending on the thickness. The membrane will be ready when the almost all water will evaporate. This can be dry in 8 hours or 24 hours. If the time is your enemy, than you can dry the membrane in oven on 70 degg C.
Very nice, informative and educational ...thanks ..May you diy carbon electrode based water desalination or ion absorbent demo unite..I am looking for same but not practically found..
Polyvinyl Alcohol is hard to come by in my sick izzzlamic country, so, can it be replaced with Polyvinyl acetate or sodium silicate or waterproof wood glue etc?
What about white wood glue?
@@cayrex hmm I think it will work, thanks for your reply.
Although, I followed a similar protocol for gel electrolyte preparation. I could not find a transparent gel like you. Please help me.
Is not transparent, is more yellow white color.
@@cayrex thanks
@@ranjeevparashar7802 pva is transparent
PVA yes , but not this polymer gel electrolyte.
did you use distilled water or battery water for making the gel
Here I use tap water,.... but yes,... is better to use distilled water
oh that makes sense thanks 👍
Could you please tell me, how long does it take to dissolve all PVA particles ?
Ufff,.... on the right temperature 20 min to 1h.
@@cayrex Thanks, interesting video, like from sri lanka.
@@vish1358 no problem 😉😊
thank very much my dear friend for you video, you can tech how to do catalytic membrane for hidrogen oxygen Battery?
Hi can I add iodine to replace the sodium hydroxide? Since I’m making DSSC textile, I need solid electrolyte
Hmm, iodine does not actually “dissolve” in water (1 gram in 3450ml h2o at 20 deg C or 1 gram in 1280 ml at 50 deg C), rather, iodine reacts with water to make hypoiodous acid (HIO) and hydroiodic acid (HI). But yes, you can add additives or you can replace the hydroxide. But with other materials is possible that you will end up with less flexible or fragile separator. I dont know what you will get if you will replace hydroxide with iodine but it's worth a try. What about salts that have iodine like KI (potassium iodide), they will be good soluble?
Also I dont know what will be the conductivity if you replace potassium hydroxide. Let me know if you get some results. Do you make a new type of DSSC? Good luck with your experiment.
@@cayrex thanks for the reply! By my understanding I need iodine iii, I’ll make a try, how do I sent the result to you?
@@ShihWeiChieh you can use my mail. cayrex@gmail.com in basic you need a solid electrolyte with triiodide content?
@@cayrex exactly! I’ll explain it in the email, but it’s really low tech diy approach.
Thanks for your sharing, it helps me a lot.
Glad that helps
Sir How to make ink from powdererd PANI and polypyrrole? kindly guide
I dont know, I never work with PANI or polypyrrole. First find a solvent which can dissolve PANI or polypyrrol.
@@cayrex after finding a solvent what should I do. kindly guide me thoroughly
You paint something. After evaporation of the solvent you get a coating of PANI. Because I dont know about performance of PANI,... I think that you will neet to use another polimer for the better binding. Mix PANI with other polymer which is also soluble in same solvent. I'm just guessing!!!
What conductivity does this gel have?
Sorry I dont know what is the ionic conductivity of this gel, I never measured.
good day! can we use this in dssc?
You can try
excellent video! the dish you have looks to be a "Pyrex Petrie Dish" (pronounced pe-tree dish). The polymer gel (pronounced - jell) would be better, thinner, right? Have you tried to use a Mayer Rod or a Doctor Blade to get uniform thin electrolyte pads? Do you need a separator when using these gels? Thanks again Doug
(By the way: The pronunciation comments are not a criticism.... just a thought from a native english speaker who would hope someone would do the same for me.... so don't view as criticism. :) )
the english word for the container you poured into is ramekin, dish, or large petri-dish :)
Hehehe thank you is almost the same word in my language "petrijevka" but when I make the video I was not able to remember the word in ENG
Interested
Sir, can we make polymer electrolyte with sulfuric acid?
Boulos Nassar It probably won‘t work in the first line because you probably will be unable to get chain growth in acid medium because in this case the hydrolysis is the reason for chain growth.
But in fact you could use the demonstrated method, wash it in di-water several times and then soak it in a sulfuric acid solution with a concentration of less than 60% v/v because else the sukfuric acid directly reacts with pva under temperate conditions and form a pink-ish product
thanks
Boulos Nassar and if you like to know I could give you a hint which is as following:
I suggest you to use PVA with a lower degree of hydrolysis (60-80%) because the left-over acetate functional group will give you upon addition of NaOH/KOH a polycondensation which is like crosslinking, this way your membrane won‘t dissolve. Regular white glue will do the job, just mix it with an hydroxide salt in the right concentration and you will be litterally able to form a hydrogel, so you can follow up by soaking it in acid.
Thanks Andre, appreciated.
How sulphuric acid can be gelled ?
I want to put it in lead acid batteries
Can it works there ?
To H2SO4 just add silica and you will get gelled electrolyte. Silica or fumed silica is used in commercial gel lead acid battery
@@cayrexit’s not working 🙃. I added pure Sulphuric Acid to Silica Gel, nothing happened.
Plus, my PVA is not dissolving at 90 degrees for 1 hours with hand mixing. It’s just turning orange to red over time. Any idea how you can help Cayrex, you would be of a great help ^^
@@cayrexYeah, please can you tell us how to do it with sulphuric acid? It didn't work with silica gel with me either.
@@puckbucky.5545 Tell me more! What concentration os the H2SO4, how much was the acid, how much you add the fumed silica
@@cayrex its 98% sulphuric acid, I just added Silica Gel (transparent balls) not fumed, into the acid, the balls were soaked in acid (I didnt measure the quantity, as I wanted to see what will happen first), kept on mixing them, left them overnight, nothing.
I'm just trying to make a solid active material with acidic electrolyte, for dual electrolyte metal-air :)))
Btw thank you a lot for your reply, didn't know you're still active, big fan of yours
hi , wonder to know is that hydrogen fuel cell PEM is same as this polymer electrolyte ?
Can I add more of koh to make it better
Yes, you can try.
@@cayrex bro if I use lithium and alluminium can I get a good battery using this electrolyte
This one is a alkaline electrolyte. Aluminium and especially lithium will react,... not so strongly as in the water based KOH electrolyte but will react. You can make a aluminium air, nickel zinc, nickel iron, zinc air, manganese zinc, silver oxide zinc battery,....
@@cayrex thanks man btw can you make a vid that shows how to make a rechargeable electrolyte
can i use LiOH instead of KOH?
You can try. Also a really good combination will be KOH with LiOH
@@cayrex thank you so much
i just tried it i end up with stone type using MgSO4
In natural drying? Try this th-cam.com/video/ftiD9Z76B_g/w-d-xo.html
is it save for people ?
for eating is not really good. But on the other hand,.... is not really dangerous. Use standart safty measurements, like gloves, etc
@@cayrex I love what you are doing, but always we have to be carefull with chemical products. Regards from Poland.
@@willypl1 I know what you mean, but somethimes some process need some strong chemicals. In this case is required safety measures and equipment. Also you need to know what you doing
I’m very late to this party, I hope you don’t mind a question. If the film tears on removal can it be repaired by moistening the edges and rubbing them together? It almost appears to be the material Steve Mould discusses in th-cam.com/video/DAUl6upA3q4/w-d-xo.html
I began looking at "slime" made by kids and realized that anything can be polymerized. Liquid soap. Toilet paper. Glue certainly and many more items. It's insane. Table salt is in large part the activator for most. Our "salt" is KOH and NaOH. Just a heads up. Watch the slime videos and try your luck. There's some smart kids out there.
Yes you have a lot of materials. Nice
This used vrla battery
No. This is alkaline. Lead acid uses acid based gel electrolyte
How to make vral gel
@@sriramulamahesh8305 H2SO4 + fumed silica
Mamun
Petri Dish
yes
No matches
Where it use?