this post was submitted on 11 Jan 2025
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[–] [email protected] 7 points 1 day ago* (last edited 1 day ago) (6 children)

That’s because lithium is in the most electropositive group of elements and sodium/potassium are too reactive for current technology. Theoretically I think Na and K based batteries should perform better as they’re even more electropositive than Li.

(Forgive the spelling error in the picture but it was the simplest one I could find quickly)

[–] AbidanYre 9 points 1 day ago (4 children)

Na and K based batteries should perform better

What I'm hearing is throw some salt on a banana and power my phone for days.

I wasn't very good at chemistry.

[–] [email protected] 8 points 1 day ago* (last edited 1 day ago) (3 children)

It’s the difference in electronegativity that makes the battery. That’s why you see lithium and oxygen a lot; lithium doesn’t want electrons, oxygen does want them. Sodium and potassium are very close in electronegativity so the salty banana battery wouldn’t be good.

I’m waiting for the cesium / fluorine battery, should theoretically be awesome. Or extremely explosive

[–] AbidanYre 4 points 18 hours ago (1 children)

That's a much more serious and informative answer than I deserved.

Thank you for the explanation.

[–] [email protected] 2 points 14 hours ago

Gotta put my chemistry education to good use somehow, certainly not using it in the IT career I ended up getting in.

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