▎ 摘　　要

NOVELTY - Manufacture of three-dimensional graphene-metal catalyst complex material involves injecting a solution containing graphene oxide and metal catalyst precursor solution or metal catalyst solution, phase-separating into hydrophilic solution and hydrophilic solution, preparing liquid droplets, and annealing the resultant droplets. USE - Manufacture of three-dimensional graphene-metal catalyst complex material (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for carrier sizing method of three-dimensional graphene-metal catalyst complex material.