WO3 /CoWO4 /rGO high porosity anode electrode materials based on ZIF-67 framework

Abstract

In this work, the high porosity of ZIF-67 frame was used to increase the infiltration degree of electrolyte, improve the diffusion rate of ions and inhibit the volume expansion of WO3/CoWO4 during the cycling process. The high conductivity of rGO was used to make up for the lack of conductivity of composite materials. At the current density of 100 mA g− 1, 507.8 mAh g− 1 specific capacity was retained after 100 cycles and 248.3 mAh g− 1 specific capacity was retained after 300 cycles at the current density of 800 mA g− 1.