▎ 摘　　要

NOVELTY - Graphene-supported phosphate catalyst comprises graphene support and Fe2Co(PO4)2 which is composited on the graphene support. The graphene-supported phosphate catalyst has morphology of micron granular aggregates. The graphene carrier has three-dimensional network shape. USE - Graphene-supported phosphate catalyst is used in preparation of metal-air battery (claimed). ADVANTAGE - The graphene-supported phosphate catalyst has simple preparation, less environmental pollution, and solves problems of expensive platinum-based oxidizing catalyst and scarce resources. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene-supported phosphate catalyst, which involves using DNA as source of phosphoric acid, hydrothermally treating iron source, cobalt source and graphene oxide in water, and then freeze drying to obtain precursor, carbonizing precursor at high temperature under inert atmosphere to obtain graphene-supported Fe2Co(PO4)2 catalyst.