Electrochemical performance of ZnCo2O4: versatility in applications

Abstract

Zinc cobaltite (ZnCo2O4) is a ternary metal oxide found in spinel with promising properties for various applications. Optimizing its catalytic activity requires an understanding of its electrochemical behavior. The electrochemical properties of ZnCo2O4 have significantly improved due to recent developments in nanostructuring, doping, surface modification, hybridization, structural engineering, and electrochemical activation. These improvements have inspired and motivated researchers by presenting the latest developments in the field. The spinel structure, coupled with the redox properties of cobalt ions, semiconducting characteristics, and electrocatalytic potential, positions ZnCo2O4 as a versatile material for several electrochemical energy storage and conversion systems. This review explores these advancements; the notable properties of ZnCo2O4; and its applications in sensors, batteries, photovoltaics, and supercapacitors.