Abstract

While research into the creation of new technologies for the generation of flexible electrochemical energy storage systems has continued, industries such as public wearables, mobile electronics, and electronic skin have gained worldwide popularity. Flexible supercapacitors (FSCs) as one of the energy storage devices have been widely utilized in portable electronics, as well as in medical sciences, owing to their high power density, exceptional mechanical integrity, and cyclic stability. In recent years, researchers have spent a good amount of time pushing several types of transition metal oxides (TMOs) for use in supercapacitors. Metal-organic frameworks (MOFs) are commonly employed as precursors or templates to fabricate the metal-oxide compounds-based electrodes for high-performance supercapacitors. These MOFs-derived metal oxides, having highly porous and adjustable structures, high specific surface area, excellent conductivity, and outstanding electrochemical stability meet the requirements of favorable specific capacity and long-term cyclic performance for both the electrochemical double-layer capacitors and pseudocapacitors. This chapter summarizes the recent advances in the generation and application of MOF-derived metallic-oxide compounds in flexible supercapacitors.