Batteries for lithium recovery from brines

Here, we report a new battery capable of efficiently recovering lithium from brines that is composed of a lithium-capturing cationic electrode (LiFePO4) and a chloride-capturing anionic electrode (Ag). It can convert a sodium-rich brine (Li : Na 1 : 100) into a lithium-rich solution (Li : Na 5 : 1) by consuming 144 Wh per kg of lithium recovered.