Lithium Metal Anode For Solid-State Batteries

Graphite has been used as the mainstream anode material for most commercial li-ion batteries. However, the limited specific capacity of graphite indicates current li-ion batteries with graphite anode have gradually reaching their theoretical limit. Replacing graphite with lithium metal anode is an idea considered for a long time. However, due to the uncontrolled dendrite growth, lithium metal anode with organic liquid electrolyte are considered an unstable combination. Now with the development of solid-state battery, solid-state electrolyte has been considered to provide the possibility for the use of lithium metal anode. This article will discuss about the motivations of introducing lithium metal anode, progress, opportunities and challenges.