| Technical optimization of LiFeP04 preparation by water quenching treatment |
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| 作者姓名： | 彭忠东 高旭光 胡国荣 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, Changsha 410083, China |
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| 基金项目： | Foundation item： Project（50604018） supported by the National Natural Science Foundation of China |
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| 摘 要： | A technique of combination of vacuum firing and water quenching was applied to the synthesis of LiFePO4 powder. The sample was prepared by heating the pre-decomposed precursor mixtures sealed in vacuum quartz-tube, followed by water quenching at the sintering temperature. The synthetic conditions were optimized by orthogonal experiment. The results indicate that the fast quenching treatment can avoid the overgrowth of single crystal and improve its availability ratio of active material. The sintering temperature has the greatest effect on the electrochemical performance of sample. Next is the molar ratio of Li to Fe and the sintering time, respectively. The samples prepared in the optimized technical condition has the highest reversible discharge specific capacity of 149.8 mA·h/g.
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| 关 键 词： | LiFePO4 锂电池 阴极材料 淬火 |
| 收稿时间： | 10 March 2007 |
| 修稿时间： | 2007-03-10 |
Technical optimization of LiFePO4 preparation by water quenching treatment |
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| Peng Zhong-dong , Gao Xu-guang , Hu Guo-rong , Tan Xian-yan , Du Ke , Deng Xin-rong and Liu Ye-xiang.Technical optimization of LiFeP04 preparation by water quenching treatment[J].Journal of Central South University of Technology,2007,14(5):656-659. |
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| Authors: | Peng Zhong-dong Gao Xu-guang Hu Guo-rong Tan Xian-yan Du Ke Deng Xin-rong and 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: | A technique of combination of vacuum firing and water quenching was applied to the synthesis of LiFePO4 powder. The sample was prepared by heating the pre-decomposed precursor mixtures sealed in vacuum quartz-tube, followed by water quenching at the sintering temperature. The synthetic conditions were optimized by orthogonal experiment. The results indicate that the fast quenching treatment can avoid the overgrowth of single crystal and improve its availability ratio of active material. The sintering temperature has the greatest effect on the electrochemical performance of sample. Next is the molar ratio of Li to Fe and the sintering time, respectively. The samples prepared in the optimized technical condition has the highest reversible discharge specific capacity of 149.8 mA.h/g. |
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| Keywords: | Li-ion batteries LiFePO4 cathode material water quenching |
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