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MIT scientists propose power storage using cement blocks
(www.datacenterdynamics.com)
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this post was submitted on 04 Aug 2023
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One catch is that carbon black is mostly made from fossil oil.
It's more nuanced than that. The question is whether we're just using carbon black that's already an excess byproduct of other industries, or we'd be actively producing it to make these wall batteries.
That's only because that's where we have an access currently. You can make carbon black by burning a whole lot of different things. Pretty much anything carbon-based. You don't make carbon black specifically, you harvest carbon black from other processes and refine it if needed.