▎ 摘　　要

NOVELTY - Method for preparing a cobalt-iron alloy/graphene oxide/carbon nanotube composite material involves using graphene oxide as precursor and carbon source, using urea as nitrogen source, adding iron salt, cobalt salt and urea to deionized water, performing oil bath mixing and stirring until dry, grinding the obtained powder and graphene oxide powder and calcining under the condition of argon dimer to prepare the composite material. The method involves (i) taking ferric chloride nonahydrate and cobaltous nitrate hexahydrate in a molar ratio n(iron) and n(cobalt) of 1:0.5, mixing urea in the oil bath and stirring until drying to obtain orange color powder and (ii) mixing and grinding 1 g orange color powder with 50 mg brown graphene oxide powder, placing in a crucible, covering the crucible, calcining under the condition of argon dimer, increasing the temperature, maintaining for 2 hours, heating tube furnace to 800 degrees C at a rate 3 degrees C/minute, and allowing the furnace to cool. USE - The method is useful for preparing a cobalt-iron alloy/graphene oxide/carbon nanotube composite material used to produce oxygen reduction catalyst for zinc-air battery cathode (claimed). ADVANTAGE - The method adopts simple preparation process, is cost-effective, provides excellent material structure uniformity, high crystallinity, excellent electrochemical performance and overcomes the defects that the precious metal catalyst is high in cost, complex in preparation process and difficult to realize industrialization. DETAILED DESCRIPTION - Method for preparing a cobalt-iron alloy/graphene oxide/carbon nanotube composite material involves using graphene oxide as precursor and carbon source, using urea as nitrogen source, adding iron salt, cobalt salt and urea to deionized water, performing oil bath mixing and stirring until dry, grinding the obtained powder and graphene oxide powder and calcining under the condition of argon dimer to prepare the composite material. The method involves (i) taking 40.54 mg ferric chloride nonahydrate and 21.82 mg cobaltous nitrate hexahydrate in a molar ratio n(iron) and n(cobalt) of 1:0.5, mixing with 1.5 g urea in the oil bath and stirring for 12 hours until drying to obtain orange color powder, where the oil temperature is maintained at 80 degrees C, the stirring speed is 300 rpm and n represents molar mass and (ii) mixing and grinding 1 g orange color powder with 50 mg brown graphene oxide powder, placed in a crucible, covering the crucible, calcining under the condition of argon dimer, increasing the temperature to 550 degrees C at 3 degrees C/minute, maintaining for 2 hours, heating tube furnace at 800 degrees C at a rate of 3 degrees C/minute, maintaining for 2 hours, finally, under the protection of the argon dimer atmosphere, allowing the furnace to cool naturally to room temperature to obtain a uniform cobalt-iron alloy/graphene oxide/carbon nanotube multi-dimensional composite structure material.