New battery seems to offer it all: lithium-metal/lithium-air electrodes

Enlarge (credit: Chanakarn Phinakan)

Current lithium-based batteries are based on intercalation—lithium ions squeeze into spaces within electrode materials such as graphite. As a result, most of the battery's volume and bulk is dedicated to things that don't contribute to carrying charges between the electrodes, which sets a limit on the sorts of energy densities that these technologies can reach.

As a result, a lot of research has gone into finding ways of getting rid of one these electrode materials.