▎ 摘　　要

In this work, the flexible LiFePO4/TinO2n - 1/rGO composite film was prepared as a cathode material for lithium-ion batteries. The LiFePO4/TinO2n - 1 composite was firstly synthesized by improved hydrothermal method, and then the flexible composite film could be prepared through facile vacuum filtration. The resultant self-supporting LiFePO4/TinO2n - 1/rGO film delivers excellent electrochemical performance. It presents a high capacity of 151.2-155.5 mAh g(-1) at 0.2 C, and stable capacity retention during multiple charge-discharge cycles. The good electrochemical performance of LiFePO4/TinO2n - 1/rGO film could be contributed to TinO2n - 1 and reduces graphene which can improve the poor electronic and ionic conductivity of LiFePO4.