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Lithium-free sodium batteries exit the lab and enter US production (newatlas.com)

submitted 6 months ago by mox@lemmy.sdf.org to c/technology@lemmy.world

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[–] Spaceballstheusername@lemmy.world 7 points 6 months ago (1 children)

I didn't see anything about round trip efficiency. I've heard that's a big downside so it might make energy storage a hard sell.

[–] ikidd@lemmy.world 3 points 6 months ago (1 children)

97% RTe from what I've heard.

[–] Spaceballstheusername@lemmy.world 2 points 6 months ago (1 children)

That would be awesome, any idea where you heard that, I've read other sodium based technologies have ~65%

[–] ikidd@lemmy.world 3 points 6 months ago

https://www.faraday.ac.uk/wp-content/uploads/2021/06/Faraday_Insights_11_FINAL.pdf (bottom of last column on page 3)

This article is saying 93% but I thought I'd seen 97 somewhere. Might have been marketing bullshit. Though this paper is 3 years old now, so there's been time for improvement. What hits the market right now may not be up to that number either, so I wouldn't disbelieve 65% either.