▎ 摘　　要

NOVELTY - A cobalt-nitrogen co-doped three-dimensional carbon material is formed by interpenetration of carbon nanotubes and graphene sheet. USE - Cobalt-nitrogen co-doped three-dimensional carbon material is used as non-noble metal catalyst in preparation of electrode material (cathode material) of proton exchange membrane fuel cells (all claimed). ADVANTAGE - The carbon material provides cathode catalyst with excellent performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the carbon material, which involves preparing a metal salt solution, reacting with 2-methylimidazole organic ligand, filtering to obtain a carbon precursor powder, washing the carbon precursor powder, drying, grinding and mixing with an inorganic salt powder, activating at high temperature, washing the obtained product with an acid, and drying. The metal salt solution contains cobalt ion. The inorganic salt powder comprises a template and a pore-forming agent.