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- เผยแพร่เมื่อ 4 ต.ค. 2024
- Here is some ideas for mechanical design of zinc batteries for preventing any shortening made from dendrites.
The idea also work in any anode metal based battery type.
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There is a similar design that deals with dendrites by mechanically wiping across the zinc plates....
Won't the dendrix just grow around the insulator, following the electron flow.
Just speculating. What If the anode were on the bottom, and occasionally disturbed to cause dendrites to break and fall back to the anode? Then maybe one can prevent dendrite shorting. I admit. I don't know how much force it would take to break dendrites. Maybe one could vibrate it with ultrasound. Maybe just a tap. Would the presence of a magnetic field change dendrite forming?
Magnetic field,... I dont think that will make some changes. But the gravity force when the anode is on the bottom make good difference,... specially if is used some tough separator
You need a redesign of the zinc electrode try a zinc sponge or foam.. also I've had success with a hard Portland cement plate separator just use Portland cement and cast a seperator
greg latta hello, hmm,... nice idea mate
This cement seperator is not flexible?
So you mix the cement with acrylic polymer additives such as paint ( I know it sounds wierd but acrylic paint and Portland cement mix well together ) and you add it on top of your anode and cathode as a sandwich and then roll it up or do a prismatic style cell. This separator dries hard but remains porous enough to allow electrolyte saturation
Bentonite clay makes a good separator and it molds into any shape. Mix dry clay powder with your electrolyte to make a separator that is also your electrolyte. But it isn't hard enough to prevent dendrites.
Also you need nickel hydroxide and cobalt oxide cathode and small amounts of zinc powder to help reuptake of zinc on charging. On a substrate of nickel mesh. Use polyurethane as a binder of active material.
Zinc metal powder as an anode on a substrate of zinc metal ( z stop works well with holes punched in it .) This active material Needs bismuth oxide and small amounts of indium oxide and aluminum oxide. This prevents gassing and helps prevent dendrites. Use a separator that I mentioned before ( Portland cement based mortar ( fine sand aggregate) and paint mixture spread over both anode and cathode instead of plain water in mortar mix use electrolyte water of potassium hydroxide and 3% boric acid and potassium flouride this my friend is the best nickel zinc battery design
Why the dendrites don't disappear when you discharge the battery? In that cycle the zinc should go into solution shouldn't it? I think if you use carbon on the cathod side too then you will be able to discharge the battery entirely and all the zinc become solved.
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This is an older video but couldn't pressure be put on the cell, released to charge and then clamped again to run?
Good thinking. My teammate have similar thinking back then. And yes, will work. But the only negative by this concept is that the charging voltage is higher.
Thanks for sharing.
Mohamed Moussalli no problem
Hi, may I ask if the electrolyte is aqueous solution? And is this Zn-graphite battery?
If they could ever engineer a zinc battery that is rechargeable and dendrites have a hard time forming money it'll be money
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cayrex2, : The cathode looks like graphite... is the main reaction here like a zn air battery? Thanks
Hello Sir. May I know, is there any reason why you wrap the cathode with separator, even though you put both electrodes in distance? Do you have any comment regarding self-discharge in open cell configuration, is there any relation between separator materials and self discharge?
Hello Aiman! The reason is to hold the active material in place. I have graphite current collector and active material,... in this case I need to wrap the active material to hold the material in place. "self-discharge in open cell configuration",... you mean if I get self discharge in open cell stupe? Not really, the cell can hold the charge really nice,.... but the problem will be when the electrolyte will evaporate.
@@cayrex thanks for your respond. So u put wrap it just to avoid the active material peels off. Am I right? Also, I saw one of your videos, u put zinc oxide in KOH for Nickel Zinc battery. What is the major benefit caused by adding ZnO?
@@AimanNazri yes, you are right. KOH in the battery is a medium for transporting the ions and is not like zinc sufate which have also a storage of zinc ions,... for example. With ZnO you add a extra or better to say a reserve of zinc ions. Some of zinc hydroxide ions (zincate) will dissolve into solution and will not fully migrate back to the anode during recharging. With ZnO you add extra zinc ions which will help it with cycles.
@@cayrex i see, based on my reading, they mention about to prevent zinc dissolution. So I just put them without understanding the actual mechanism. Besides that? Do you have any comments on oxygen and hydrogen evolution? Is it normal or bad thing for battery? Because i read somewhere that gas evolution is related to corrosion.
Forgot to mention, that acquiring Graphite flakes is nearly impossible for the time being in my area.
lol. no. you just use a graphite stick and some tape. wtf.
Hi, I have a lot of Graphite powder and have tried all methods presented by Robert Murray Smith and a to make Graphene but all were unsuccessful. It must be that I must use flakes and not powder. Do you have any suggestions. Appreciate your help.
I would so much like to try your Carbon-Zinc battery presented in this video.
Thanks.
Also my RMS graphene remake was unsuccessful (low quality graphene). Have you try cen.acs.org/articles/92/web/2014/04/Solution-Graphene-Production.html
Hi Cayrex
Did you figure out the type of conductive polymer liquid in the utube "conductive polymer" video?
Perez Frank yes, how to make this polymer battery is available on Patreon.
Where?
I am really interested
ah I messed up,.... you mean this video: th-cam.com/video/uUlmncSK-xg/w-d-xo.html toluene is the solvent, styrofoam or any plastic is the binder and graphite powder for conductivity
minimize dendrites problem solved with pulse charger.
I said the same thing I'm thinking a bedini wheel,wat about making it in a ultrasonic jewelry cleaner box and have it turn on once a day,I kno John bedini,and Tom Bearden both talk about knocking dandrites off with radiant energy pulse charging