| 钇掺杂LiCoPO4正极材料的电化学性能研究 |
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| 引用本文： | 刘晓红,章小明,邹美捷.钇掺杂LiCoPO4正极材料的电化学性能研究[J].南昌大学学报(工科版),2012,34(2):124-126. |
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| 作者姓名： | 刘晓红 章小明 邹美捷 |
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| 作者单位： | 南昌大学环境与化学工程学院,江西南昌,330031 |
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| 摘 要： | 采用溶胶-凝胶法合成了LiCoPO4与钇掺杂的正极材料,并研究了该材料的晶型结构、充放电以及循环性能。试验表明:少量Y3+掺杂不影响LiCoPO4的晶格结构;合成的改性正极材料Li0.99Y0.01CoPO4在0.1C倍率下首次放电比容量达到123.0 mAh/g,相比纯相LiCoPO4提高了8%,20次循环后Li0.99Y0.01CoPO4的放电比容量是78.6 mAh/g,改性材料在电化学性能上得到较大提升。
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| 关 键 词： | LiCoPO4 锂离子电池 掺杂 制备 |
Research on Electrochemical Performance Y-doped Cathode Materials of LiCoPO4 |
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| LIU Xiao-hong
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ZHANG Xiao-ming
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ZOU Mei-jie.Research on Electrochemical Performance Y-doped Cathode Materials of LiCoPO4[J].Journal of Nanchang University(Engineering & Technology Edition),2012,34(2):124-126. |
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| Authors: | LIU Xiao-hong ZHANG Xiao-ming ZOU Mei-jie |
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| Affiliation: | ( School of Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, China) |
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| Abstract: | The compound of cathode materials doping with y3＋ was synthesized by sol-gel method. And the crystal structure, charge-discharge properties and cycle performance were investigated. The Results indicated that ol- ivine structure of the LiCoPO4 was well maintained after the doping of a small quantity of y3＋. The first discharge capacity of the cathode material Li0.99Y0.01CoPQ reached 123.0 mAh/g under 0.1 C rate,and increased 8% com- pared with the pure LiCoPO4. After 20 cycles the discharge is 78.6 mAh/g, the electrochemical performance of ma- terials have much improvement. |
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| Keywords: | LiCoPO4 Lithium-ion battery doping produce |
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