Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
180200 | Electrochemistry Communications | 2011 | 4 Pages |
Electrochemical performance of LiFePO4/C should be strongly dependent on the carbon coating structure for core-shell nanocomposites. In this work two types of LiFePO4/C composites with the same carbon coating thickness were prepared using a sol–gel technique, enabling direct comparison of the influence of carbon coating porosity on the performance of LiFePO4/C cathodes. It was found that the material with a distribution of dual mesopores delivers better electrochemical performance than the one with a narrow pore size distribution.
► Core-shell LiFePO4/C nanocomposite with high specific area was prepared through a sol–gel technique. ► Pore size distribution in the carbon coating plays an important part in high-rate performance of LiFePO4/C. ► LiFePO4/C material featuring dual porosity delivers better rate performance.