"sodium battery as good as lithium-ion" ~Washington State University Researchers.
Researchers have created a sodium-ion battery that holds as much energy and works as well as some commercial lithium-ion battery chemistries, making for a potentially viable battery technology out of abundant and cheap materials. The team reports one of the best results to date for a sodium-ion battery. >>

https://www.sciencedaily.com/releases/2020/06/200601072951.htm