Method for preparing carbon-supported nano-platinum-chromium intermetallic compound serving as cathode catalyst of proton exchange membrane fuel cell
A fuel cell cathode and proton exchange membrane technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, battery electrodes, etc.
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Embodiment 1
[0049] Embodiment 1: Preparation of carbon-supported nano-platinum-chromium intermetallic compound electrocatalyst
[0050] (1) Weigh 142.8mg of sodium chloroplatinate hexahydrate (0.254mmol, platinum element 49.53mg, molecular weight 561.87) and 22.8mg chromium trichloride hexahydrate (0.086mmol, chromium element 4.47mg, molecular weight 266.45) and dissolve in 45ml In methanol, stir for 2-10 minutes to completely dissolve; add 168.2 mg of sodium acetate to the solution with dissolved metal ions, adjust the pH of the solution to be greater than 7, and obtain an alkaline solution system; then pass carbon monoxide into the alkaline solution Remove the air in the alkaline solution system with gas, and then react at 50° C. for 12 hours under a carbon monoxide atmosphere to obtain a metal carbonyl cluster solution A;
[0051] (2) Injection of carbon support: Add 217.8 mg of KB-600 to metal carbonyl cluster solution A under nitrogen protection; stir at 55°C for 6 hours, then remove...
Embodiment 2
[0061] Embodiment 2: Preparation of carbon-supported nano-platinum-chromium intermetallic compound electrocatalyst
[0062] (1) Weigh 142.8mg of sodium chloroplatinate hexahydrate (0.254mmol, platinum element 49.53mg, molecular weight 561.87) and 68.4mg chromium trichloride hexahydrate (0.258mmol, chromium element 13.41mg, molecular weight 266.45) and dissolve in 45ml In methanol, stir for 2-10 minutes to completely dissolve; add 168.2 mg of sodium acetate to the solution with dissolved metal ions, adjust the pH of the solution to be greater than 7, and obtain an alkaline solution system; then pass carbon monoxide into the alkaline solution Remove the air in the alkaline solution system with gas, and then react at 50° C. for 12 hours under a carbon monoxide atmosphere to obtain a metal carbonyl cluster solution A;
[0063] (2) Injection of carbon support: Add 217.8 mg of KB-600 to metal carbonyl cluster solution A under nitrogen protection; stir at 55°C for 6 hours, then remov...
Embodiment 3
[0072] Embodiment 3: Preparation of carbon-supported nano-platinum-chromium intermetallic compound electrocatalyst
[0073] (1) Weigh 132.8mg of chloroplatinic acid hexahydrate (0.256mmol, platinum element 49.92mg, molecular weight 517.92) and 22.8mg chromium trichloride hexahydrate (0.086mmol, chromium element 4.47mg, molecular weight 266.45) dissolved in 45ml methanol , stir for 2-10 minutes to dissolve completely; add 168.2 mg of sodium acetate to the solution with dissolved metal ions, adjust the pH of the solution to be greater than 7, and obtain an alkaline solution system; then pass carbon monoxide gas into the alkaline solution Remove the air in the alkaline solution system, and then react at 50° C. for 12 hours under a carbon monoxide atmosphere to obtain a metal carbonyl cluster solution A;
[0074] (2) Injection of carbon support: Add 217.8 mg of KB-600 to metal carbonyl cluster solution A under nitrogen protection; stir at 55°C for 6 hours, then remove at 70°C unde...
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