Comment on YSK: You can make supercapacitors out of cement, water and carbon black

homesweethomeMrL@lemmy.world ⁨5⁩ ⁨days⁩ ago

It is cool, and yes the prototype they made is the size of a coin battery. They made three 1v “super capacitors” and linked them together to light a 3v LED.

That said, my only question was should they ever get it to be able to store and discharge 10kW, wouldn’t it necessarily all discharge at once? Like, it’s not a battery - but that’s a small problem after they’ve solved the big ones.

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