Preparation method of fuel cell carbon-supported platinum catalyst

The invention relates to the technical field of catalysts, in particular to a preparation method of a fuel cell carbon-supported platinum catalyst. The preparation method comprises the following steps: calcining a carbon carrier, mercaptoacetic acid and triphenyl phosphate at high temperature, doping phosphorus and sulfur to obtain a heteroatom-containing carbon carrier, and finally carrying out microwave reaction to load platinum, thereby synthesizing the carbon-supported platinum catalyst. The catalyst has good stability, the charge distribution and the spinning direction of adjacent carbon atoms can be changed through co-doping of sulfur and phosphorus, the limiting current density of the catalyst is promoted to be increased, and the limiting current density of the catalyst is-5.03 mA cm . The prepared catalyst is subjected to 2000 circles of high-potential circulation, the battery voltage at 1.5 A cm is 0.625 V, the loss does not exceed 30 mV, and the durability is good. According to the presen