▎ 摘　　要

The three-dimensional N and S co-doped graphene loaded cobalt sulfide nanoparticles oxygen evolution electrocatalyst (CoS/N/S/rGO) was prepared by using D-glucosamine as the Co dispersant and carbon source, thiourea as the nitrogen source and sulfur source, and NaCl as the template, achieving N and S co-doping and uniformly loading two kinds of nanoparticles Co9S8 and Co9S3. CoS/N/S/rGO had good oxygen reduction reaction (ORR) activity with initial potential of 960 mV and half-wave potential of 815 mV, respectively, which was similar to commercial Pt/C. In addition, CoS/N/S/rGO showed obvious four-electron transfer characteristics and ultra-low hydrogen peroxide production rate. Compared with Pt/C based zinc-air battery, CoS/N/S/rGO based zinc-air battery showed higher constant current discharge performance and better stability in 6 mol.L-1 KOH and 0.2 mol.L-1 Zn(CH3COO)(2) alkaline electrolyte.