A proton exchange membrane fuel cell catalyst with core-shell structure and preparation method thereof
A proton exchange membrane, fuel cell technology, applied in structural parts, battery electrodes, circuits, etc., can solve the problems of battery performance degradation, poisoning platinum-based catalysts, failure, etc., to improve stability and life, good anti-sulfur dioxide poisoning performance Effect
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Embodiment 1
[0021] 1) The platinum catalyst is mixed with red phosphorus and dried under nitrogen atmosphere, wherein the size of platinum particles is 1nm;
[0022] 2) Grinding the mixture of platinum catalyst and red phosphorus obtained in step 1);
[0023] 3) Put the ground mixture obtained in step 2) in a tube furnace, raise the temperature to 800 °C and keep it for 4 hours under a nitrogen atmosphere, then cool it down to 400 °C and keep it for 4 hours, and finally cool to get the sulfur dioxide poisoning resistant A fuel cell catalyst with high performance, wherein the number of layers of black phosphorene is 1 layer, the mass fraction of platinum metal is 90%, and the mass fraction of black phosphorene is 10%.
Embodiment 2
[0025] 1) The palladium catalyst was mixed with red phosphorus and dried under a helium atmosphere, in which the size of platinum particles was 100 nm;
[0026] 2) Grinding the mixture of palladium catalyst and red phosphorus obtained in step 1);
[0027] 3) Put the ground mixture obtained in step 2) in a tube furnace, raise the temperature to 500 °C and keep it for 2 hours under a helium atmosphere, then cool it down to 300 °C and keep it for 2 hours, and finally cool to get a sulfur dioxide resistant A fuel cell catalyst with poisoning performance, wherein the number of layers of black phosphorene is 20, the mass fraction of palladium metal is 9%, and the mass fraction of black phosphorene is 91%.
Embodiment 3
[0029] 1) The platinum catalyst was mixed with red phosphorus and dried under argon atmosphere, wherein the size of platinum particles was 50 nm;
[0030] 2) Grinding the mixture of platinum metal catalyst and red phosphorus obtained in step 1);
[0031] 3) Put the ground mixture obtained in step 2) in a tube furnace, raise the temperature to 650 °C and keep it for 3 hours under an argon atmosphere, then cool it down to 350 °C and keep it for 3 hours, and finally cool to get a compound with anti-sulfur dioxide A fuel cell catalyst with poisoning performance, wherein the number of layers of black phosphorene is 10 layers, the mass fraction of platinum metal is 17%, and the mass fraction of black phosphorene is 83%.
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