A CNT-connection strategy of coupling ZnS and a CoFe alloy in ORR/OER catalysts of rechargeable zinc–air batteries

FeCo-S/Z8-NC integrates CNTs, ZnS, a CoFe alloy and sp 3 defect carbon with CNTs, forming a protective armor while enabling fast electron transport. The FeCo-S/Z8-NC-based zinc–air battery exhibits an open circuit potential of 1.56 V.