▎ 摘　　要

NOVELTY - Preparation of fuel cell three-dimensional carbon structure supported platinum-cobalt alloy catalyst involves mixing zero-dimensional carbon materials, one-dimensional carbon materials, two-dimensional carbon materials, and carbon black with nitric acid solution, stirring, washing, suction filtering, drying, ball milling to obtain three-dimensional carbon structure powder, mixing three-dimensional carbon structure powder and ethylene glycol, dripping platinum precursor solution and cobalt precursor solution, stirring, adjusting pH, adding to autoclave, reacting, cooling to obtain nano-small-sized three-dimensional carbon structure-loaded platinum-cobalt alloy catalyst, suction filtering, vacuum drying, grinding, annealing, then grinding to obtain three-dimensional carbon structure-supported platinum-cobalt alloy catalyst, placing the powder in rotatable ceramic crucible, and plasma treating at radio frequency power of 150 W in nitrogen or argon atmosphere for 1-3 hours. USE - Preparation of fuel cell three-dimensional carbon structure supported platinum-cobalt alloy catalyst (claimed) for proton exchange membrane fuel cell for converting hydrogen energy into electric energy. ADVANTAGE - The method enables to prepare high-performance carbon-supported platinum alloy catalyst with particle size of less than 3.5 nm, mass activity of more than 350 mA/mg platinum at 0.9 V, and aging test quality activity attenuation of less than 10% for 10000 cycles. DETAILED DESCRIPTION - Preparation of fuel cell three-dimensional carbon structure supported platinum-cobalt alloy catalyst involves mixing 0.5-1.5 pts. wt. zero-dimensional carbon materials, 0.5-1.5 pts. wt. one-dimensional carbon materials, 0.5-1.5 pts. wt. two-dimensional carbon materials, and 1-10 pts. wt. carbon black with 20-100 pts. wt. of 10 wt.% nitric acid solution, stirring at 60-80degrees Celsius for 5-10 hours, washing with water, suction filtering, drying at 60-80degrees Celsius for 5-10 hours, ball milling the dried at 250-400 rpm for 1-2 hours to obtain three-dimensional carbon structure powder, mixing 1-10 pts. wt. three-dimensional carbon structure powder and 500-1000 pts. wt. ethylene glycol for 30-60 minutes, dripping 5-20 pts. wt. platinum precursor solution and 5-20 pts. wt. cobalt precursor solution, stirring for 30-60 minutes, adjusting pH to 10-11 with sodium hydroxide solution, adding to autoclave, reacting at 140-160degrees Celsius for 5-8 hours, cooling to room temperature to obtain nano-small-sized three-dimensional carbon structure-loaded platinum-cobalt alloy catalyst, suction filtering, water washing, vacuum drying at 60-80degrees Celsius for 5-10 hours, grinding, annealing ground powder in atmosphere comprising 0-20 vol.% hydrogen and nitrogen at 150-400degrees Celsius under gas flow rate of 80-100 sccm for 1-3 hours, then grinding to obtain three-dimensional carbon structure-supported platinum-cobalt alloy catalyst, performing plasma-enhanced chemical vapor deposition on calcined samples by placing the powder in rotatable ceramic crucible, fixing the crucible using rotating rod, and plasma treating at 150-400degrees Celsius and radio frequency power of 150 W in nitrogen or argon atmosphere for 1-3 hours.