▎ 摘　　要

NOVELTY - Preparation of modified manganese oxide/graphene composite electrode involves preparing copper manganese alloy comprising 30-50 atomic% copper and balance manganese, processing alloy into 50-100 mu m thick alloy flakes, dealloying to produce toughness gradient nanoporous copper with pore diameter of 20-30 nm, and pore diameter of 50-70 nm on both sides, heat treating using hydrogen and argon as reducing and protecting atmosphere at 600-800 degrees C for 30-120 minutes, and performing chemical vapor deposition at 800-1000 degrees C for 5-10 minutes with argon, hydrogen and methane as growth atmosphere. USE - Preparation of modified manganese oxide/graphene composite electrode. ADVANTAGE - The method is simple and economical, and provides composite electrode having nano-porous property.