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If you are interested in sodium-ion battery chemistry there is an interesting review of some of the first consumer batteries: https://old.reddit.com/r/batterie
by teruakohatu 2y ago
If you are interested in sodium-ion battery chemistry there is an interesting review of some of the first consumer batteries:
https://old.reddit.com/r/batteries/comments/14xhlw6/review_of_the_first_sodium_ion_batteries_you_can/ https://old.reddit.com/r/batteries/comments/14xhlw6/review_o...
TLDR; lower density, poor low temperature performance, safer but still capable of thermal runaway.
- eternityforest 2y agoI think I saw a test somewhere that showed they're extremely sensitive to charge rate, the cycle life is way better at lower rates, which might explain why some people say they had them die in just a few hundred, while they're actually supposed to give thousands. Manufacturers mostly seem to test and say they don't explode until above 4.4-4.8v, and they're 70% to 80% charged by 3.6v, so there's the possibility of of using them with LiFePo4 chargers and LiPo protection chips. There are even 3.7v LiFePo4 chips that should get them 85% charged. I'm currently working on a dev board with selectable 4.05, 3.6, and 3.7v charging, to cover all the common chemistries except LTO and ultracaps.