Cathode Surface-Induced, Solvation-Mediated, Micrometer-Sized Li O Cycling for Li-O Batteries.

The "nonsticky" surface of a highly stable RuO /carbon nanotube cathode enhances the formation and decomposition of cathode surface-induced, solvation-mediated, micrometer-sized discharge products Li O in Li-O batteries and thus significantly improves the specific capacity, overpotentials, and cycle life. These findings contribute to a new understanding how the cathode surface controls Li-O electrochemistry.