New Lithium–Oxygen Battery Is Scalable, Cheap and Quite Promising A paper in Nature Energy and some buzz on the web from a couple weeks ago. New battery tech announcements aren't usually worth much attention but this one seems to come from pretty credible sources and cover most of the bases as an apparently practical alternative. It's lithium-oxygen chemistry but in a sealed battery with the oxygen staying solid state trapped in matrix with no air exchange issues. The claim is for commercial version within a year. To my very limited understanding it seems like a variation that would fit with Gigafactory plans.