S-Vacancy Rich Ni-Doped CoS Embedded in S,N Co-doped Carbon as a Bifunctional Catalyst for Zinc-Air Battery.
Simultaneously optimizing activities of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) remains challenging in the design of bifunctional electrocatalysts due to their distinct reaction pathways. Herein, a simultaneous sulfidation-carbonization strategy using CoNi-ZIF to construct S-vacancy-rich Ni-...