▎ 摘　　要

NOVELTY - Preparatio of cobalt composite cobalt-nickel alloy/nitrogen-doped graphene nano-catalyst comprises adding citric acid, urea and graphene oxide to the medium, mixing to obtain suspension, adding carbon cloth, hydrothermally reacting at 160-200degrees Celsius to obtain carbon cloth precursor, loading soluble cobalt salt and soluble nickel salt, and annealing at 300-600degrees Celsius under reducing gas atmosphere. USE - The method is for preparation of cobalt composite cobalt-nickel alloy/nitrogen-doped graphene nano-catalyst ADVANTAGE - The method enables to prepare cobalt composite cobalt-nickel alloy loaded on nitrogen-doped graphene catalyst, which has low raw material price, short preparation period, simple preparation process, short safety period, and is suitable for mass production. The catalyst is directly grown on the carbon cloth to cause the lack of the adhesive, polymer as to improve the conductivity.