▎ 摘　　要

NOVELTY - Graphene hybrid catalyst comprises graphene sheet with a modified surface, and a nano sheet containing graphene sheet and a metal of formula BS2 (B is molybdenum, chromium or tungsten) formed on the surface. The graphene hybrid catalyst includes core-shell nanoparticles formed on the nanosheets. USE - Graphene hybrid catalyst for water splitting and zinc-air battery (claimed). ADVANTAGE - The graphene hybrid catalyst is economical with an effect of showing good activity in oxygen reduction reaction, hydrogen evolution reaction and oxygen evolution reaction. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for producing a graphene hybrid catalyst for water decomposition and zinc-air batteries, which involves: (A) preparing a mixed solution in which graphene, oxide, and water are mixed; (B) adding metal ions and precursors to the mixed solution and ultrasonic treatment; (C) adding sulfur and precursor to the solution under stirring; (D) stirring the solution to obtain a solid powder; (E) performing primary heat treatment and secondary heat treatment of the solid powder; and (F) cooling the solid powder that is subjected to the heat treatment to room temperature to obtain the hybrid catalyst.