| 层状LiMnO_2的溶胶凝胶法合成及其改性 |
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| 引用本文： | 王承位,高德淑,苏光耀,丁燕怀,刘黎,蒋晶.层状LiMnO_2的溶胶凝胶法合成及其改性[J].化学研究,2006,17(3):25-28. |
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| 作者姓名： | 王承位 高德淑 苏光耀 丁燕怀 刘黎 蒋晶 |
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| 作者单位： | 湘潭大学,化学学院,湖南,湘潭,411105 |
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| 摘 要： | 采用溶胶凝胶法合成了锂离子电池正极材料层状锰酸锂(o-L iMnO2),并对其进行了N i2+掺杂改性研究,优化了层状L iMnO2的合成路径及制备条件.采用XRD、充放电实验和交流阻抗测试方法研究了N i2+的掺入对o-L iMnO2充放电容量的影响.结果表明N i2+的掺入明显提高了锰酸锂的放电比容量和循环性能,抑制了循环过程中电池阻抗的增加.
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| 关 键 词： | 锂离子电池 溶胶凝胶法 层状LiMnO2 正极材料 Ni掺杂 |
| 文章编号： | 1008-1011（2006）03-0025-04 |
| 收稿时间： | 2006-03-21 |
| 修稿时间： | 2006年3月21日 |
Synthesis and Modification of Layered LiMnO2 via Sol-gel Process |
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| WANG Cheng-wei,GAO De-shu,SU Guang-yao,DING Yan-huai,LIU Li,JIANG Jing.Synthesis and Modification of Layered LiMnO2 via Sol-gel Process[J].Chemical Research,2006,17(3):25-28. |
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| Authors: | WANG Cheng-wei GAO De-shu SU Guang-yao DING Yan-huai LIU Li JIANG Jing |
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| Abstract: | Layered LiMnO_(2)(o-LiMnO_(2)),a cathode material for lithium ion battery,was prepared and modified with Ni~(2 ) by sol-gel process.The synthetic route and preparation condition were optimized.Experiments of XRD,charge-discharge and EIS were carried out.The results show that the discharge efficiency and specific capacity retention of Ni-doped materials are improved greatly and the increase of discharge-transfer impedance of cathode during cycling is restrained. |
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| Keywords: | lithium battery sol-gel method layered LiMnO_(2) cathode material Ni doping |
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