Chrysanthemum flower-like NiCo2O4–nitrogen doped graphene oxide composite: an efficient electrocatalyst for lithium–oxygen and zinc–air batteries

Abstract

Chrysanthemum flower-like NiCo₂O₄–nitrogen doped graphene oxide composite material has been explored as a bifunctional cathode electrocatalyst for aqueous zinc–air and non-aqueous lithium–oxygen batteries. This cathode exhibits maximum discharge capacities of 712 and 15 046 mA h g⁻¹ for zinc–air and lithium–oxygen batteries, respectively, with stable cycling over 50 cycles.