Preparation and Electrochemical Properties of ZnCoO4@CoWO4 Nanocomposites
ZnCo2O4 nanoneedle arrays were grown on nickel foam by hydrothermal synthesis method,and then CoWO4 nanosheets were deposited on the surface to prepare a core-shell ZnCo2O4@CoWO4 composite electrode material.The microstructure,phase structure,and electrochemical properties of the electrode ma-terial were characterized by SEM,XRD,and electrochemical workstation.The results show that the ZnCo2O4@CoWO4 electrode material exhibits a rod-like microstructure,with CoWO4 nanosheets tightly wrap-ping the surface of ZnCo2O4 nanoneedles.Meanwhile,the electrochemical properties of ZnCo2O4@CoWO4 electrode material are significantly improved on the basis of the monomer.Additionally,ZnCo2O4@CoWO4 composite electrode material has a high specific capacity and an enhanced charge-discharge cycle perfor-mance,effectively addressing the problems of poor conductivity and cycle stability caused by the volume expansion of momoner ZnCo2O4 material.