| Li3V2（PO4）3掺锰的改性研究 |
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| 引用本文： | 刘云霞,朱先军,詹晖,周运鸿.Li3V2（PO4）3掺锰的改性研究[J].电源技术,2011,35(2):173-175. |
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| 作者姓名： | 刘云霞 朱先军 詹晖 周运鸿 |
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| 作者单位： | 刘云霞,詹晖,周运鸿,LIU Yun-xia,ZHAN Hui,ZHOU Yun-hong(武汉大学化学与分子科学院,湖北,武汉,430079);朱先军,ZHU Xian-jun(华中师范大学化学学院,湖北,武汉,430079) |
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| 摘 要： | 采用溶胶凝胶法制备了锂离子电池正极材料Li3+xMnxV2-x(PO4)3(x=0、0.05、0.10、0.20)。通过X射线衍射(XRD)和扫描电子显微镜(SEM)分别对材料的结构及表面形貌进行了表征,结果表明:Li3+xMnxV2-x(PO4)3与Li3V2(PO4)3具有相同的结构,均属单斜晶系P21/n,且随着锰含量的增加,样品的颗粒变大。循环伏安和充放电测试结果表明,随着锰含量的增加,样品的首次比容量减少,但Li3.1Mn0.1V1.9(PO4)3循环性能较好,说明少量Mn的掺杂可以改善Li3V2(PO4)3的循环性能。
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| 关 键 词： | Li3V2(PO4)3 锰掺杂 溶胶凝胶法 电化学性能 |
Study on modification of Li_3V_2(PO_4)_3 by Mn doping |
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| LIU Yun-xia,ZHU Xian-jun,ZHAN Hui,ZHOU Yun-hong.Study on modification of Li_3V_2(PO_4)_3 by Mn doping[J].Chinese Journal of Power Sources,2011,35(2):173-175. |
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| Authors: | LIU Yun-xia ZHU Xian-jun ZHAN Hui ZHOU Yun-hong |
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| Affiliation: | LIU Yun-xia1,ZHU Xian-jun2,ZHAN Hui1,ZHOU Yun-hong1(1.College of Chemistry and Molecular Sciences,Wuhan University,Wuhan Hubei 430079,China,2.Chemistry College,Central China Normal University,China) |
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| Abstract: | Li-ion battery cathode materials Li3+xMnxV2-x(PO4)3(x=0,0.05,0.10,0.20) were synthesized by sol-gel method.The structure and morphology of samples were characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM).The electrochemical behaviors were characterized by galvanostatic charge/discharge and cyclic voltammetry.The results show that the particle size of products are increased by adding small amountof Mn in Li3V2(PO4)3,but the crystal structure does not changed comparing with Li3V2(PO4... |
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| Keywords: | Li3V2(PO4)3 |
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