▎ 摘　　要

NOVELTY - Preparing nitrogen-doped reduced graphene oxide aerogel loaded with platinum-cobalt alloy nanoparticles comprises (i) adding reduced graphene oxide into a sodium alginate solution and stirring to obtain a solution of reduced graphene oxide-sodium alginate, (ii) dropping the solution, (iii) using freeze-drying to convert the chloroplatinic acid-sodium alginate/cobalt acetate/reduced graphene oxide hydrogel into a chloroplatinic acid-sodium alginate/reduced graphene oxide aerogel, (iv) subjecting the chloroplatinic acid-sodium alginate/reduced graphene oxide aerogel, (v) removing excess cobalt nanoparticles from the platinum-cobalt alloy nanoparticles/nitrogen-doped reduced graphene oxide aerogel, (vi) evaluating the electrochemical performance of the obtained product using an electrochemical workstation and a rotating disk electrode. USE - Preparation method of nitrogen-doped reducing graphene oxide aerogel ORR electrocatalyst loading platinum-cobalt alloy nano-particle. ADVANTAGE - The catalyst exhibits a structure with the coexistence of single atoms and alloy nanoparticles, as well as a synergistic effect between the single atoms and alloy nanoparticles, resulting in excellent catalytic activity when used as an ORR catalyst (half-wave potential of 0.804V in 0.5 dilute sulfuric acid electrolyte), sodium alginate is rich as a source, and the nitrogen-doped reduced graphene oxide aerogel with loaded platinum-cobalt alloy nanoparticles exhibits excellent ORR catalytic performance under acidic conditions, making it a highly promising material for energy conversion.