| 锂离子电池正极材料Li0.97Re0.01FePO4的合成及性能 |
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| 引用本文： | 王春雄,向楷雄,龚文强,陈 晗,曾 杰,吉希希.锂离子电池正极材料Li0.97Re0.01FePO4的合成及性能[J].湖南工业大学学报,2010,24(4):5-8. |
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| 作者姓名： | 王春雄 向楷雄 龚文强 陈 晗 曾 杰 吉希希 |
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| 作者单位： | 湖南工业大学,冶金工程学院,湖南,株洲,412008 |
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| 摘 要： | 采用固相反应法合成了锂离子电池正极材料Li0.97Re0.01FePO4(Re=Er,Y,Gd,Nd,La),采用X射线衍射、恒电流充放试验对掺杂试样的微观结构和电化学性能进行测试。试验结果表明:掺杂稀土金属离子对LiFePO4的晶体结构没有影响,与LiFePO4相比,掺杂Er3+,Y3+,Gd3+的试样具有优良的循环性能和倍率性能,而掺杂Nd3+,La3+的试样的循环性能和倍率性能较差。掺杂试样中,Li0.97Gd0.01FePO4的电化学性能最佳,在C/10和1C(1C=120 mA.g-1)倍率下放电容量均最大。
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| 关 键 词： | 锂离子电池 正极材料 稀土掺杂 电化学性能 LiFePO4 |
| 收稿时间： | 2010/3/18 0:00:00 |
Synthesis and Performance of Cathode Materials
Li0.97Re0.01FePO4 for Lithium Ion Batteries |
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| Wang Chunxiong,Xiang Kaixiong,Gong Wenqiang,Chen Han,Zeng Jie and Ji Xixi.Synthesis and Performance of Cathode Materials
Li0.97Re0.01FePO4 for Lithium Ion Batteries[J].Journal of Hnnnan University of Technology,2010,24(4):5-8. |
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| Authors: | Wang Chunxiong Xiang Kaixiong Gong Wenqiang Chen Han Zeng Jie and Ji Xixi |
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| Affiliation: | School of Metallurgical Engineering, Hunan University of Technology;School of Metallurgical Engineering, Hunan University of Technology;School of Metallurgical Engineering, Hunan University of Technology;School of Metallurgical Engineering, Hunan University of Technology;School of Metallurgical Engineering, Hunan University of Technology;School of Metallurgical Engineering, Hunan University of Technology |
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| Abstract: | Cathode materials Li0.97Re0.01FePO4 for Lithium ion batteries are synthesized by solid-state reaction method (Re=Er, Y, Gd, Nd, La). The microstructure and electrochemical performance of the doping samples are tested by X-ray diffraction (XRD) and charge-discharge experiments. The experimental results show that doping with rare-earth ions has no effect on microstructure of LiFePO4. Compared with LiFePO4, the samples doping with Er3+, Y3+, Gd3+ possess excellent cycling capability and rate performance, but the samples doping with Nd3+, La3+ have bad cycling capability and rate performance. In doping samples, Li0.97Gd0.01FePO4 exhibits the most excellent electrochemical performance and its discharge capacities both are the biggest at C/10 and 1C ratio. |
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| Keywords: | LiFePO4 |
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