| Effect of cooling modes on microstructure and electrochemical performance of LiFePO4 |
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| 引用本文： | 胡国荣 高旭光 彭忠东 谭显艳 杜柯 邓新荣 刘业翔. Effect of cooling modes on microstructure and electrochemical performance of LiFePO4[J]. 中南工业大学学报(英文版), 2007, 14(5): 647-650. DOI: 10.1007/s11771-007-0124-y |
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| 作者姓名： | 胡国荣 高旭光 彭忠东 谭显艳 杜柯 邓新荣 刘业翔 |
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| 作者单位： | School of Metallurgical Science and Engineering Central South University，School of Metallurgical Science and Engineering Central South University，School of Metallurgical Science and Engineering Central South University，School of Metallurgical Science and Engineering Central South University，School of Metallurgical Science and Engineering Central South University，School of Metallurgical Science and Engineering Central South University，School of Metallurgical Science and Engineering Central South University，Changsha 410083 China，Changsha 410083 China，Changsha 410083 China，Changsha 410083 China，Changsha 410083 China，Changsha 410083 China，Changsha 410083 China |
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| 摘 要： | LiFePO4 was prepared by heating the pre-decomposed precursor mixtures sealed in vacuum quartz-tube. Three kinds of cooling modes including nature cooling, air quenching, and water quenching were applied to comparing the effects of cooling modes on the microstructure and electrochemical characteristics of the material. The results indicate that the water quenching mode can control overgrowth of the grain size of final product and improve its electrochemical performance compared with nature cooling mode and air quenching mode. The sample synthesized by using water quenching mode is of the highest reversible discharge specific capacity and the best cyclic electrochemical performance, demonstrating the first discharge capacity of 138.1 mA·h/g at 0.1C rate and the total loss of capacity of 3.11% after 20 cycles.
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| 关 键 词： | 锂电池 阴极材料 LiFePO4 冷却模型 |
| 收稿时间： | 2007-03-20 |
| 修稿时间： | 2007-03-20 |
Effect of cooling modes on microstructure and electrochemical performance of LiFePO4 |
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| Hu Guo-rong , Gao Xu-guang , Peng Zhong-dong , Tan Xian-yan , Du Ke , Deng Xin-rong and Liu Ye-xiang. Effect of cooling modes on microstructure and electrochemical performance of LiFePO4[J]. Journal of Central South University of Technology, 2007, 14(5): 647-650. DOI: 10.1007/s11771-007-0124-y |
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| Authors: | Hu Guo-rong Gao Xu-guang Peng Zhong-dong Tan Xian-yan Du Ke Deng Xin-rong Liu Ye-xiang |
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| Affiliation: | School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China |
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| Abstract: | LiFePO4 was prepared by heating the pre-decomposed precursor mixtures sealed in vacuum quartz-tube. Three kinds of cooling modes including nature cooling, air quenching, and water quenching were applied to comparing the effects of cooling modes on the microstructure and electrochemical characteristics of the material. The results indicate that the water quenching mode can control overgrowth of the grain size of final product and improve its electrochemical performance compared with nature cooling mode and air quenching mode. The sample synthesized by using water quenching mode is of the highest reversible discharge specific capacity and the best cyclic electrochemical performance, demonstrating the first discharge capacity of 138.1 mA.h/g at 0.1C rate and the total loss of capacity of 3.11% after 20 cycles. |
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| Keywords: | Li-ion battery cathode material LiFePO4 cooling mode microstructure electrochemical performance |
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