Sodium rhodizonate [1] gets a comparable real density to lithium by using an excellent cathode (rhodizonate) that doesn't work with lithium. The thing is that t

Sodium rhodizonate [1] gets a comparable real density to lithium by using an excellent cathode (rhodizonate) that doesn't work with lithium. The thing is that the rhodizonate method hasn't escaped Yi Cui's lab as far as I can tell. 1: https://www.nature.com/articles/s41560-017-0014-y?from=article_link https://www.nature.com/articles/s41560-017-0014-y?from=artic...