| F掺杂对LiFePO4／C材料电化学性能的影响 |
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| 引用本文： | 毛秦钟,黄辉,张文魁,甘永平,陶新永.F掺杂对LiFePO4／C材料电化学性能的影响[J].中国材料科技与设备,2009,6(3):65-67. |
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| 作者姓名： | 毛秦钟 黄辉 张文魁 甘永平 陶新永 |
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| 作者单位： | 浙江工业大学化学工程与材料学院,浙江杭州310032 |
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| 摘 要： | 以FePO4·4H2O，LiOH·H2O，LiF和柠檬酸为原料，采用一步固相混合烧结法制得F掺杂LiFePO4／C材料，研究了烧结温度和F掺杂量对LiFePO4／C电化学性能的影响。XRD和SEM分析表明，所得样品均为橄榄石型LiFePO4，颗粒粒径在1～2μm。电化学测试表明，LiFePO3．97F0．03／C在0．1C下的初始放电容量为144．7mAh·g^-1，1C放电比容量为123mAh·g^-1且具有良好的循环性能。
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| 关 键 词： | LiFePO4／C 固相反应 锂离子电池 电化学性能 |
Effects of F Doping on the Electrochemical Properties of LiFePO4/C Cathode Material |
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| MAO Qin-zhong,HUANG Hui,ZHANG Wen-kui,GAN Yong-ping,TAO Xin-yong.Effects of F Doping on the Electrochemical Properties of LiFePO4/C Cathode Material[J].Chinese Materials Science Technology & Equipment,2009,6(3):65-67. |
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| Authors: | MAO Qin-zhong HUANG Hui ZHANG Wen-kui GAN Yong-ping TAO Xin-yong |
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| Affiliation: | ( College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Zhejiang, Hangzhou,310032 , China) |
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| Abstract: | The F doped LiFePO4/C compound was prepared by one-step solid state reaction using stoichiometric amounts of FePO4 · 4H2 O, LiOH · H2 O, LiF and citric acid as starting materials. The sintering temperature and amount of F-doping on the electrochemical properties of LiFePO4/C material was evaluated. XRD and SEM investigation revealed that the synthesized samples were identified as an ordered olivine strticture with the orthorhombic Pnma space group. The average particle size was about 1-2 μm. The electrochemical tests showed that the discharge capacity of LiFePO3.97 F0.03/C sample is 144.7 mAh · g^-1 at 0.1 C rate and 123 mAh · g^-1 at 1 C rate, respectively along with the excellent cycling performance. |
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| Keywords: | LiFePO4/C Solid state reaction Lithium ion batteries Electrochemical performance |
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