Abstract
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.
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