A kind of anti-reverse electrode catalyst for fuel cell and preparation method thereof
A fuel cell and catalyst technology, applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of uneven dispersion, reduce the life of the fuel cell stack, and affect the performance of the catalyst, so as to avoid agglomeration, be suitable for mass production, and avoid The effect of incomplete decomposition
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[0043] The preparation method of the anti-reversed pole catalyst for fuel cell according to the embodiment of the present invention, it comprises the following steps:
[0044] a. Mixing a carbon-containing carrier and a dispersant to obtain a carrier slurry, and then adding a non-Pt noble metal precursor for mixing to obtain a non-Pt noble metal-containing slurry;
[0045] b. heat-treating the non-Pt noble metal-containing slurry, and drying to obtain a loaded non-Pt noble metal-containing solid or a non-Pt noble metal compound solid;
[0046] c. Perform the first sintering treatment on the supported non-Pt noble metal-containing solid or the non-Pt noble metal compound solid to obtain the supported non-Pt noble metal powder, wherein the sintering atmosphere is selected from nitrogen, argon, hydrogen, carbon monoxide or ammonia at least one gas in
[0047] d. Performing a second sintering treatment on the supported non-Pt-containing noble metal powder obtained in step c to ob...
Embodiment 1
[0059] (1) Set the BET specific surface area to 900m 2 / g of carbon black was calcined at 300°C for 3 hours in a nitrogen atmosphere to obtain a carrier for synthesis of an anti-reverse catalyst;
[0060] (2) Add the dispersant solution that water and ethylene glycol are formed in 2g carbon carrier and fully stir, then add chloroiridic acid solution, wherein iridium content is 8g, the mass ratio of the mass sum of carbon and iridium simple substance and dispersant solution The ratio is 0.5:100 to obtain an iridium-containing slurry; the iridium-containing slurry is heated at 160° C. in the reactor and fully mixed for 12 hours, the pressure in the reactor is controlled to 3-5 bar, mixed and dried to obtain a carbon-supported iridium solid;
[0061] (3) placing the carbon-supported iridium solid in carbon monoxide for the first sintering treatment at 500° C., and the sintering time is 3 hours to obtain carbon-supported iridium powder;
[0062] (4) Prepare water and sulfuric aci...
Embodiment 2
[0066] (1) Set the BET specific surface area to 300m 2 / g of carbon black was calcined at 600°C for 12 hours in an argon atmosphere to obtain a carrier for synthesis of an anti-reverse catalyst;
[0067] (2) add the dispersant solution that water and isopropanol are formed in 4g carbon carrier and fully stir, then add ammonium chloroiridate solution, wherein iridium content is 6g, the mass summation of carbon and iridium simple substance and dispersant solution The mass ratio is 15:100 to obtain iridium-containing slurry; then add hydrogen peroxide solution, heat the iridium-containing slurry at 45°C in the reactor and mix thoroughly for 6 hours, control the pressure in the reactor to 50-60mbar, mix and dry Obtain carbon-supported iridium compound solid;
[0068] (3) placing the carbon-supported iridium compound solid in ammonia gas to perform the first sintering treatment at 750° C., and the sintering time is 2 hours to obtain carbon-supported iridium powder;
[0069] (4) P...
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