Effect of coating MoS2 nanoflakes onto CuCo2O4 on the electrochemical performance as electrode materials of supercapacitors

CuCo 2 O 4 @MoS 2 microflowers have been synthesized on Ni foam using a hydrothermal method, and their electrochemical performances as supercapacitor electrodes are investigated. The influence of MoS 2 loading on the specific capacity and cycle stability of the nanocomposites is systematically analyzed. It is found that the addition of MoS 2 significantly enhances the specific capacity of the CuCo 2 O 4 microflowers, while the cycle stability varies with MoS 2 content. Competitive mechanistic insights into the interplay between MoS 2 content, electrochemical behavior, and structural stability during cycling are provided. Notably, the CuCo 2 O 4 @MoS 2 -60 sample exhibits an impressive specific capacity of 11.1 F cm −2 at a discharge current density of 0.003 A cm −2 , with a remarkable capacity retention rate of 94.6% after 1800 charge–discharge cycles. Moreover, the practical application prospects are demonstrated through the fabrication of symmetric supercapacitors. This study offers valuable guidance for the rational design and optimization of CuCo 2 O 4 @MoS 2 nanocomposites for high-performance supercapacitor applications.