▎ 摘　　要

A simple and low-cost method to synthesize Ge nanoparticles/graphene (Ge NPs/GR) nanocomposites under mild conditions was developed. The reduction of sugarcane bagasse (SB) derived graphene oxide nanosheets was accompanied by generation of Ge NPs in one step. The resulting nanocomposites exhibit high specific capacity and superior capacity retention of 90% after 15 cycles.