this post was submitted on 12 Aug 2025
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Green Energy

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[–] greengnu@slrpnk.net 7 points 1 month ago (2 children)

The cost of hydrogen is not the fuel cells but that hydrogen is made from oil.

[–] CIA_chatbot@lemmy.world 5 points 1 month ago (4 children)

Huh? I thought Hydrogen was usually produced from splitting O2 and H1 from water?

[–] kersploosh@sh.itjust.works 10 points 1 month ago (1 children)

There are two practical ways to make hydrogen:

  1. Split water molecules via electrolysis. This is thermally inefficient and not cost-effective at scale.

  2. Strip hydrogen atoms off of hydrocarbon molecules, usually natural gas. It's much cheaper. Unfortunately, the leftover carbon atoms leave the process as CO2. AFAIK all commercially available hydrogen is made this way.

[–] CIA_chatbot@lemmy.world 6 points 1 month ago

Damn, thanks for the info, I always assumed it was just splitting water

[–] gressen@lemmy.zip 7 points 1 month ago (1 children)

There is a multitude of ways to make hydrogen and only 1% of production is low emission.

https://en.m.wikipedia.org/wiki/Hydrogen_production

[–] CIA_chatbot@lemmy.world 6 points 1 month ago

Well shit Today I learned, thanks!

[–] bruhbeans@lemmy.ml 6 points 1 month ago (1 children)

It takes a ton of energy to split water into it's components, that typically comes from fossil energy

[–] CIA_chatbot@lemmy.world 2 points 1 month ago (1 children)
[–] Badabinski@kbin.earth 6 points 1 month ago

There's still a place for producing hydrogen via electrolysis (chemical feedstock), but anyone who wants to burn hydrogen is either selling you a rocket (good) or an excuse to keep sucking up that crude. The answer to our energy problems is still just solar, wind, batteries, and other renewables.

[–] perestroika@slrpnk.net 3 points 1 month ago* (last edited 1 month ago)

Most of it, currently, yes.

But there is no requirement to do it that way.

(Also, the people who run fuel cells typically don't buy fossil hydrogen.)

[–] buffing_lecturer@leminal.space 4 points 1 month ago

I think it is tricky to contain, being so small, that storage is a big part of why it's too expensive.

[–] perestroika@slrpnk.net 2 points 1 month ago

Anything that brings operating temperatures down by a half while maintaining efficiency is good news. :)