期刊
IONICS
卷 27, 期 5, 页码 1881-1886出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-021-03973-7
关键词
Lithium-ion batteries; LiFePO4; TinO; (2n 𕒵); Reduce graphene; Electrochemical performance
资金
- Open Fund Project from Southwest Petroleum University [KSZ19507]
The flexible LiFePO4/TinO2n-1/rGO composite film as a cathode material for lithium-ion batteries exhibits excellent electrochemical performance, with high capacity and stable cycle retention. This performance is attributed to the presence of TinO2n-1 and reduced graphene, which enhance the electronic and ionic conductivity of LiFePO4.
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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