Recent Progress of Transition Metal-Based Oxide Composite Electrode Materials in Supercapacitor

As an electrochemical energy storage device with high power density, supercapacitors are favored by researchers. Transition metal-based oxide materials have attracted extensive attention from researchers due to their high theoretical pseudocapacitance characteristics and are used to design and construct high-performance composite electrode materials for supercapacitors. In this miniature review, the application and existing problems of several typical transition metal-based oxide composites in the field of supercapacitors in recent years are summarized. Finally, the development trend of transition metal-based oxide composites in the field of supercapacitors is prospected. The aim is to provide some timely and effective new ideas for the research work of researchers in related fields.