Rapid Development and Critical Issues of Secondary Lithium-air Batteries

Rechargeable lithium-air batteries have been the focus in recent years, owing to their great potential for achieving super-high specific energy density. Many researchers have carried out investigations on crucial issues such as reaction mechanism, cycle life, overpotential, rate capability, and significant progresses have been made. Based on these efforts, in combination with our own experience, this paper summarizes recent development of secondary lithium-air batteries, and our opinions on the critical scientific issues which are urgently required to solve in view of real application.