Supercapacitive Performances of Ternary CuCoS Sulfides.

Currently, ternary CuCoS sulfides are intensively investigated as electrode materials for electrochemical capacitors due to their low cost, high conductivity, and synergistic effect. The research of CuCoS materials for energy storage has gradually grown from 2016. The supercapacitive performances of CuCoS electrodes for electrochemical capacitors are briefly reviewed in this work. The structure, morphology, and particle size of CuCoS are related to the synthesis conditions and electrochemical performances. The thin films of CuCoS nanostructures deposited on conductive substrates and their composites both show better properties than single CuCoS. CuCoS and its composites reveal large potential for asymmetric capacitors, delivering high energy densities. However, there is still much new space remaining for future research. The possible development directions, challenges, and opportunities for CuCoS materials are also discussed.