ZIF-67-Derived Co-N-C Supported Nickel Cobalt Sulfide as a Bifunctional Electrocatalyst for Sustainable Hydrogen Production via Alkaline Electrolysis

This study introduces two efficient electrode materials, NF@ZIF-67@NiCo 2 S 4 and NF@Co–N–C@NiCo 2 S 4 , for H 2 production, achieving excellent OER, HER and overall water splitting activities with remarkable durability in an alkaline electrolyzer.