Fuel cell non-noble metal nitrogen-carbon loaded platinum alloy electrocatalyst and preparation method and application thereof

The invention discloses a fuel cell non-noble metal nitrogen-carbon loaded platinum alloy electrocatalyst and a preparation method and application thereof, and belongs to the field of fuel cells. The method comprises the following steps: performing high-temperature carbonization on an imidazole metal organic framework to obtain metal nitrogen carbon as a carrier, performing ultrasonic dispersion on a platinum precursor and the metal nitrogen carbon, drying, performing heat treatment in a reducing atmosphere, and combining with a pickling etching process to obtain the catalyst. The nitrogen-doped carbon carrier can inhibit agglomeration of the nanoparticles in the high-temperature roasting process, and the catalyst with small and uniformly dispersed metal nanoparticles can be obtained. In addition, transition metal in the catalyst is introduced from the carrier, and additional metal salt does not need to be added. Electrochemical research shows that the prepared catalyst has excellent electrochemical activity