MineMan
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Most promising primary battery chemsitry
Any ideas on the most practical battery chemistries to experiment with for highest energy densities possible. The battery can be primary… it’s
almost better if it is. The best I can find is lithium thyionl chloride, however the discharge rates are about .1C, far too little.
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Sulaiman
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silver is used as the anode of a primary cell that has high discharge rates,
with electrolyte added only when required, giving a very long shelf life.
mostly military applications.
A sodium anode in water should give a massive current - available as the sodium explodes.
Unless you want to spend years on battery research your best bet is to buy a commercial product.
Making a battery is reasonably easy, making a reliable battery is not.
[Edited on 30-3-2022 by Sulaiman]
CAUTION : Hobby Chemist, not Professional or even Amateur
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MineMan
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Quote: Originally posted by Sulaiman  | silver is used as the anode of a primary cell that has high discharge rates,
with electrolyte added only when required, giving a very long shelf life.
mostly military applications.
A sodium anode in water should give a massive current - available as the sodium explodes.
Unless you want to spend years on battery research your best bet is to buy a commercial product.
Making a battery is reasonably easy, making a reliable battery is not.
[Edited on 30-3-2022 by Sulaiman] |
Thank you for the reply. I see some papers where labs make a battery that has 1000wh/kg. I need storage capacity and medium discharge. It seems like
producing them at scale is the challenge rather than making a few in the lab for testing?
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clearly_not_atara
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I think you're looking for Li-SVO (cathode: Ag2O*2V2O5), used for medical implants requiring the highest possible energy and power density:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3811938/
A fuel-air cell would have an even higher energy density, but low power output. And good luck "making" this, it's very, very hard.
[Edited on 04-20-1969 by clearly_not_atara]
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hodges
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I would be interested in seeing a lithium-fluorine fuel cell. A single cell should produce nearly 6 volts!
Sorry for being a "wise guy", but after examining the electromotive series I've always wondered if a cell made with the highest and lowest potential
elements is feasible.
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Sulaiman
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I suppose that anyone considering battery chemistry has had similar thoughts.
Due to geopolitics I guess that battery research is well funded at the moment.
My own brief attempts at diy batteries exposed how little electrochemistry I understand 
CAUTION : Hobby Chemist, not Professional or even Amateur
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MineMan
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The Li SVO looks interesting… it’s still best by lithium thyional chlorides at 1400wh/kg… but these have low current discharge. It does seem
challenging but reading some papers some chemistries are doable.
Lithium fluoride would be awesome. I wonder about lithium hydride and graphene fluoride!
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