▎ 摘　　要

NOVELTY - Graphite is oxidized with an oxidizing agent to obtain graphite oxide. The obtained graphite oxide is frozen-dried. The graphite oxide with functional groups containing oxygen is heat-treated and graphene is obtained. USE - Manufacture of graphene used for manufacturing supporting catalyst for fuel cell (all claimed). ADVANTAGE - The graphene is manufactured with high specific surface area. The fuel cell formed using the catalyst formed from graphene has improved durability, and excellent electric conductance and durability. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) manufacture of supporting catalyst; and (2) fuel cell.