Synergistic action of highly-active porous carbon-based bifunctional electrocatalysts and neutral electrolyte: endowing zinc–air batteries with ultra-long cycle stability

A honeycomb N/S co-doped Co 9 S 8 nanoparticle material loaded with porous carbon skeleton (N/SdCF-OIM/Co 9 S 8 ) as cathode catalyst was designed by using Co-MOF and SiO 2 spheres. The ZABs based on N/SdCF-OIM/Co 9 S 8 in neutral electrolyte have longer cycle stability than in alkaline electrolytes.