NiMn2O4 as an efficient cathode catalyst for rechargeable lithium-air batteries.

ABSTRACT

NiMn2O4 with different crystal structures was successfully synthesized and evaluated as a cathode catalyst for rechargeable Li-air batteries for the first time. The result reveals that the intermediate spinel structure between normal and inverse spinels demonstrates faster kinetics towards ORR/OER than the normal spinel, leading to a better battery performance.