Influence of carbon coating porosity on the electrochemical performance of LiFePO4 cathode

• DOI: 10.1016/j.elecom.2011.04.021
• Publication Date: 2011-04-25T05:59:26Z
• Authors: Fangfang Pan; Xueyang Chen; Hongju Li; Xiaodong Xin; Qinqin Chang; Kangning Jiang; Wen-lou Wang
• Keywords: 0202 electrical engineering, electronic engineering, information engineering; 02 engineering and technology

Abstract Electrochemical performance of LiFePO 4 /C should be strongly dependent on the carbon coating structure for core-shell nanocomposites. In this work two types of LiFePO 4 /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 LiFePO 4 /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.