| 共生Li3PO4对LiFePO4电化学性能的影响 |
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| 引用本文： | 刘战强,陈海杰,唐宇峰,黄富强.共生Li3PO4对LiFePO4电化学性能的影响[J].硅酸盐学报,2011,39(4):559-562. |
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| 作者姓名： | 刘战强 陈海杰 唐宇峰 黄富强 |
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| 作者单位： | 中国科学院上海硅酸盐研究所,中国科学院能量转换材料重点实验室,上海,200050 |
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| 基金项目： | 国家自然科学基金，上海市科委纳米专项 |
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| 摘 要： | 采用固相法制备出xLi3PO4/LiFePO4/C(x=0,0.025,0.05,0.10,0.15,0.20,0.50)复合锂离子电池阴极材料.电化学充放电测试显示,0.025Li3PO4/LiFePO4/C材料的性能优于同时制备的对比样品LiFePO4/C的.0.025Li3PO4/LiFePO4/C材料以0.1 ...
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| 关 键 词： | 复合物 磷酸锂铁 锂电池 阴极 电化学性能 |
Influence of Coexisting Li3PO4 on Electrochemical Properties of LiFePO4 |
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| LIU Zhanqiang,CHEN Haijie,TANG Yufeng,HUANG Fuqiang.Influence of Coexisting Li3PO4 on Electrochemical Properties of LiFePO4[J].Journal of The Chinese Ceramic Society,2011,39(4):559-562. |
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| Authors: | LIU Zhanqiang CHEN Haijie TANG Yufeng HUANG Fuqiang |
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| Affiliation: | (CAS Key Laboratory of Materials for Energy Conversion,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China) |
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| Abstract: | The composite cathode materials of xLi3PO4/LiFePO4/C (x=0,0.025,0.05,0.1 0,0.1 5,0.20,0.50)based on LiFePO4 for lithium baRery were prepared by a solid state reaction method.The galvanostatic charge/discharge analysis indicated that the electro chemical capabilities of 0.025Li3PO4/EiFePO4/C was beRer than that of LiFePO4/C synthesized in the sanle way.A higher discharge capacity of 158.7mA·h/g could be obtained by 0.025Li3PO4/C in the first cycle at the rateof 0.1 C,and a capacity of 139.3 mA·h/g could be held after 65 cycles at the rate of 1 C.The electrochemical capacities of the obtained 0.025Li3PO4/LiFePO4/C were also investigated by cyclic voltammetry measurements and electrochemical impedance spectroscopy.The results are consistent with galvanostatic charge/discharge analysis which indicates that Li3PO4 Can improve the electrochemical property of LiFeP04. |
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| Keywords: | composite lithium iron phosphate lithium baaery cathode electrochemical property |
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