cross-posted from: https://slrpnk.net/post/8569504

How is the hydrogen made?

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12 points

You can, but it is totally inefficient

You get about 30% of the energy out that you put in

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9 points

So it’s more like a really bad battery

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12 points

But with all the disadvantages of having to handle gas!

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3 points

Yup! It has really good gravimetric energy density, but really bad charging efficiency.

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5 points

Not THAT bad, really, it potentially has a much better mileage-to-weight ratio and sidesteps the issue of lithium recycling and politics

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4 points
*

Great to gravametric energy density, okay volumetric energy density, great availability, terrible charging efficiency, and complicated handling and storing mechanisms. Lots of tradeoffs.

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