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Cheap proton batteries compete with lithium on energy density (sopuli.xyz)
submitted 3 years ago by to c/solarpunk@slrpnk.net
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cross-posted from: https://sopuli.xyz/post/1726805

RMIT engineers say they've tripled the energy density of cheap, rechargeable, recyclable proton flow batteries, which can now challenge commercially available lithium-ion batteries for capacity with a specific energy density of 245 Wh/kg.

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[–] 1 point 3 years ago (1 child)

What's the reactions? Proton battery sounds like a media-friendly name for a hydrogen fuel cell?

Is it a H fuel cell?

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  • [–] 1 point 3 years ago* (last edited 3 years ago)

    It seems to be a hydrogen fuel cell with an integrated hydrogen atom store made of carbon, capable of absorbing 1% of its own weight in hydrogen.

    This seems a little, but a mass unit of hydrogen contains a lot of molecules, so a lot of chemical energy (it is the lightest element after all). For example, 1 kilogram of hydrogen is 12 cubic meters at room temperature, so 1 gram is 12 liters - enough to do a lot of work, if reacted right.

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