CoxNi1−xO-NiCo2O4/rGO synergistic bifunctional electrocatalysts for high-rate rechargeable zinc–air batteries

CoNi/rGO bifunctional catalysts with spinel NiCo 2 O 4 and Co x Ni 1− x O bimetallic oxide nanoparticles embedded on reduced graphene oxide enabled the stable performance of rechargeable Zn–air batteries at a high current density of 100 mA cm −2 .