Catalyst for proton exchange membrane fuel cell, preparation method thereof, and proton exchange membrane fuel cell
A proton exchange membrane, fuel cell technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of low catalyst utilization rate and battery discharge performance to be improved, and achieve improved electronic conductivity, improved mass transfer effect, and reduced The effect of small polarization losses
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[0043] The preparation method of the catalyst is not particularly limited in the present invention, and the catalyst can be directly mixed to obtain the catalyst, or can be sprayed on the electrode according to the method described below to obtain the catalyst layer.
[0044] After directly mixing the above-mentioned catalyst, solidify it on the electrode, and perform cyclic voltammetry test on it, the results show that the catalyst provided by the invention has good catalytic performance as an anode catalyst or a cathode catalyst.
[0045] The present invention also provides a preparation method of a proton exchange membrane fuel cell catalyst layer, comprising the following steps:
[0046] Spraying the first material, the second material and the third material on the electrode to obtain a catalyst layer, the spraying order of the first material, the second material and the third material is not limited;
[0047] The first material is activated carbon, the second material is ...
Embodiment 1
[0060] Measure 10.6mL of chloroplatinic acid solution with a mass concentration of 7.6mg / mL in terms of Pt, add 10mL of ethylene glycol solution with a molar concentration of 0.5M NaOH under magnetic stirring, adjust the pH value to about 11, add 120mg under magnetic stirring to evenly Dispersed activated carbon XC72R, fed with argon as a protective gas, magnetically stirred at 130°C for 3 hours, then adjusted the pH value to acidic with HCl, stirred overnight to settle, washed and dried to obtain Pt / XC72R with a loading capacity of 40wt% ;
[0061] Measure 10.6mL of chloroplatinic acid solution with a mass concentration of 7.6mg / mL in terms of Pt, add 10mL of ethylene glycol solution with a molar concentration of 0.5M NaOH under magnetic stirring, adjust the pH value to about 11, add 120mg under magnetic stirring to evenly Dispersed CNTs, fed with argon as a protective gas, stirred magnetically at 130°C for 3 hours, then adjusted the pH value to acidic with HCl, stirred and s...
Embodiment 2
[0064] Measure 7.9mL of chloroplatinic acid whose mass concentration is 7.6mg / mL in terms of Pt and 3.9mL of ruthenium trichloride ethylene glycol solution that is 7.8mg / mL in terms of Ru mass concentration, and add 20mL molar concentration of 1.0M NaOH in ethylene glycol solution, adjust the pH value to about 13, add 110mg of uniformly dispersed activated carbon XC72R under magnetic stirring, pass in argon as a protective gas, and magnetically stir at 170°C for 3 hours, then adjust the pH value with HCl To acidity, stirring overnight to settle, after washing and drying, the PtRu / XC72R with a loading capacity of 30wt% was obtained;
[0065] Measure 7.9mL of chloroplatinic acid whose mass concentration is 7.6mg / mL in terms of Pt and 3.9mL of ruthenium trichloride ethylene glycol solution that is 7.8mg / mL in terms of Ru mass concentration, and add 20mL molar concentration of 1.0M NaOH in ethylene glycol solution, adjust the pH value to about 13, add 110 mg of uniformly dispersed...
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