Progress in Spinel‐Structured Cobaltite‐Based Positive Electrode Materials for Supercapacitors

Abstract In recent days, the family of spinel cobaltites with multiple oxidation states has received much attention as an electrode material for supercapacitors. Profiting from its superior electrochemical performance, these cobaltites play a significant role in energy storage and conversion devices. In this review, we provided an in‐depth description of spinel cobaltites. Further, we review several cobaltites and their composites, corresponding synthesis methods, and the application of these materials for supercapacitors. As a result of several extraordinary outputs, spinel cobaltites are likely to be widely studied in the future.