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New sodium ion battery stores twice the energy and desalinates seawater
(www.sciencedaily.com)
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this post was submitted on 25 Feb 2026
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They have slightly lower density right now, but there is work to increase the density, and it could very well get up to about 210wh/kg which would put it directly on par with current lithium ion batteries. So it could replace the low end of the EV market without any significant change except for a reduction in price by a lot.