▎ 摘　　要

In order to enhance practical applications of Zn/Ni batteries as rechargeable batteries, it is critical to increase their cycling stability. Herein, ZnO nanoparticles are embedded in xerogel of reduced graphene oxide to form ZnO/reduced graphene oxide composites via a simple one-step hydrothermal treatment. As anode in Zn/Ni batteries, the as-prepared ZnO/reduced graphene oxide composites exhibit high specific capacity (similar to 580 mAh center dot g(-1)at 6.5 Ag-1) and excellent cycling stability (stable within 1700 cycles). The introduction of reduced graphene oxide xerogel in the composites is found to immensely improve the electron transfer and long-term cycling stability of the composites. The as-prepared composites are extremely promising as anode in Zn/Ni batteries considering their facile preparation and superb electrochemical performance.