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this post was submitted on 30 Jul 2023
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Does this exist as a consumer product yet?
This is a research paper, so it's gonna be at least a couple of years until ot could be seen in products. However the battery uses hydrogen, it's effectively an alternative to fuel cells, so the use case would be in vehicles rather than yout phone. That being said, hydrogen fuel infrastructure is almost non-existent right now.
And you basically have 2 options for hydrogen production: oil consuming and GG-emitting steam reformation, or energy intensive electrolysis of water, unless there's another i don't know