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229 points curl-up | 1 comments | | HN request time: 0.205s | source
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nextaccountic ◴[] No.42748602[source]
Since you are talking about electrical to electrical, and you compare to lithium batteries in a chart, do you mean that this thing works like a battery?

Like, coupled to solar power, can charge during the day (making hydrogen using some cycle) and provide electrical power during the night

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1. blacklion ◴[] No.42749158[source]
Making hydrogen is extremely energy-expensive and, as result, money-expensive if it is not by-product of crude oil processing. It is why hydrogen cars & Ko is not viable really if we stop to process crude oil (in additional to the problems with storage and transportation).

Hydrogen is greenwashing by big oil companies, only they could provide "cheap" hydrogen, and not some water cracking with electricity from renewable sources.