Mesoporous LaMnO3+δ perovskite from spray−pyrolysis with superior performance for oxygen reduction reaction and Zn−air battery

A device-feasible and Earth-abundant LaMnO3+δ electrocatalyst is obtained for ORR and Zn-air batteries. Contributed by the surface oxidation state of Mn and high specific surface area, it displayed a commercial Pt/C comparable performance.294