| Preparation and electrochemical properties of Y-doped Li3V2（PO4）3 cathode materials for lithium batteries |
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| 引用本文： | 钟胜奎,刘乐通,姜吉琼,李延伟,王健,刘洁群,李艳红.Preparation and electrochemical properties of Y-doped Li3V2（PO4）3 cathode materials for lithium batteries[J].中国稀土学报(英文版),2009,27(1):134-137. |
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| 作者姓名： | 钟胜奎 刘乐通 姜吉琼 李延伟 王健 刘洁群 李艳红 |
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| 作者单位： | ZHONG Shengkui,JIANG Jiqiong,LI Yanwei,LIU Jiequn(Department of Material and Chemistry, Guilin University of Technology, Guilin 541004, China;Key Laboratory of New Processing Technology for Nonferrous Metals and Materials Ministry of Education Guilin University of Technology Guilin 514004 China);LIU Letong,WANG Jian(Department of Material and Chemistry, Guilin University of Technology, Guilin 541004, China);LI Yanhong(Guangxi Key Laboratory of New Processing Technology for Nonferrous Metals and Materials Ministry of Education Guilin University of Technology Guilin 514004 China;Department of Resources and Envirorunental Engineering,Guilin University of Technology,Guilin 541004,China)
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| 基金项目： | 广西自治区自然科学基金，Program to Sponsor Teams for Innovation in the Construction of Talent Highlands in Guangxi Institutions of Higher Learning，Research Funds of the Guangxi Key Laboratory of Environmental Engineering |
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| 摘 要： |
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| 关 键 词： | 电化学性能 正极材料 Y掺杂 材料制备 磷酸 锂电池 电化学阻抗谱 最佳掺杂含量 |
| 收稿时间： | 4 June 2008 |
Preparation and electrochemical properties of Y-doped Li3V2(PO4)3 cathode materials for lithium batteries |
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| ZHONG Shengkui,LIU Letong,JIANG Jiqiong,LI Yanwei,WANG Jian,LIU Jiequn,LI Yanhong.Preparation and electrochemical properties of Y-doped Li3V2(PO4)3 cathode materials for lithium batteries[J].Journal of Rare Earths,2009,27(1):134-137. |
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| Authors: | ZHONG Shengkui LIU Letong JIANG Jiqiong LI Yanwei WANG Jian LIU Jiequn LI Yanhong |
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| Affiliation: | 1. Department of Material and Chemistry, Guilin University of Technology, Guilin 541004, China; 2. Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, China; 3.Guangxi Key Laboratory of Environmental Engineering, Protection and Assessment, Guilin University of Technology, Guilin 541004, China; 4. Department of Resources and Environmental Engineering, Guilin University of Technology, Guilin 541004, China) |
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| Abstract: | Y-doped Li3V2(PO4)3 cathode materials were prepared by a carbothermal reduction(CTR) process. The properties of the Y-doped Li3V2(PO4)3 were investigated by X-ray diffraction (XRD) and electrochemical measurements. XRD studies showed that the Y-doped Li3V2(PO4)3 had the same monoclinic structure as the undoped Li3V2(PO4)3. The Y-doped Li3V2(PO4)3 samples were investigated on the Li extraction/insertion performances through charge/discharge, cyclic voltammogram (CV), and electrochemical impedance spectra (EIS). The optimal doping content of Y was x=0.03 in Li3V2-xYx(PO4)3 system. The Y-doped Li3V2(PO4)3 samples showed a better cyclic ability. The electrode reaction reversibility was enhanced, and the charge transfer resistance was decreased through the Y-doping. The improved electrochemical performances of the Y-doped Li3V2(PO4)3 cathode materials were attributed to the addition of Y3+ ion by stabilizing the monoclinic structure. |
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| Keywords: | lithium ion batteries cathode material Li3V2(PO4)3 Y-doping carbothermal reduction method cyclic voltammogram (CV) rare earths |
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