A free-standing 3D porous all-ceramic cathode for high capacity, long cycle life Li–O2 batteries

Abstract

The all-ceramic RuO₂@La_0.7Ca_0.3CuO₃ membrane cathode contributes to an ultra-high capacity of 21 518 mA h g⁻¹ over 110 cycles in Li–O₂ batteries. A simple infiltration technique is effective for obtaining a highly active supported RuO₂ catalyst, and a solvent with a high donor number should be preferentially chosen because it contributes to a much higher capacity.