eli5 Can co2 be used as batteries?

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Is it possible to use energy from renewable energy sources to break down CO2 and when needed, turn that back into another molecule? Or am I dumb?

And is it efficient?

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Anonymous 0 Comments

To understand the fundamental obstacle here: CO2 is what you get if you burn an organic thingie. Obviously the thing you get after you burn off all the energy in the other stuff has no energy of its own, else you’d burn that too.

Iceland turns the CO2 into stone somehow, don’t ask me how. But that seems an appropriate analogy for how much energy is in CO2. I don’t think anyone’s tried burning stone.

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