| 正尖晶石LiMn_2O_4电化学性能研究 |
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| 引用本文： | 卢世刚,孙玉成,刘人敏,金维华,李文忠,韩沧.正尖晶石LiMn_2O_4电化学性能研究[J].电化学,2000,6(4):442-450. |
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| 作者姓名： | 卢世刚 孙玉成 刘人敏 金维华 李文忠 韩沧 |
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| 作者单位： | 北京有色金属研究总院矿物资源与冶金材料研究所!北京100088,北京有色金属研究总院矿物资源与冶金材料研究所!北京100088,北京有色金属研究总院矿物资源与冶金材料研究所!北京100088,北京有色金属研究总院矿物资源与冶金材料研究所!北京100088,北京有色金属研究总院矿物资源与 |
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| 基金项目： | 新材料领域项目;715-004-026; |
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| 摘 要： | 采用高温固相反应合成了尖晶石LiMn2 O4 锂离子电池正极材料 ,并对其性能进行研究 .综合考察了影响材料电化学性能的主要因素 ,诸如原材料的选择、合成温度、Li/Mn比以及添加金属元素Co等 .研究了材料在高温下的电化学性能和影响因素 ,并分析了LiMn2 O4 在电解质中的溶解和引起容量衰减的原因
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| 关 键 词： | 锂离子电池 正尖晶石LiMn_2O_4 固相合成 电化学性能 |
| 收稿时间： | 2000-11-28 |
The Electrochemical Performance of the Spinel LiMn2O4 |
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| LU Shi-gang,SUN Yu-cheng,LIU Ren-min,JIN Wei-hua,LI Wen-zhong,HAN Cang.The Electrochemical Performance of the Spinel LiMn2O4[J].Electrochemistry,2000,6(4):442-450. |
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| Authors: | LU Shi-gang SUN Yu-cheng LIU Ren-min JIN Wei-hua LI Wen-zhong HAN Cang |
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| Abstract: | The cathode material spinel LiMn 2O 4 of lithium ion battery was synthesized by making use of solid state reaction at 750～850 ℃. The discharge capacity was 115～125 mAh g -1 . It was observed that the capacity loss increase at the elvated 55 ℃ temperature. A little excess Li content and the Co doped spined could improved the cycle capability of the cathode material. The dissolution of the spined in the electrolyte was measured. The treatment method was used to stabilize the LiMn 2O 4 structure. It was found that the spinel LiMn 2O 4, treated with layer compound LiCoO 2 at 850 ℃ showed poor electrochemical lithium insertion/extraction, and the XRD structure of both LiMn 2O 4 and LiCoO 2 changed after the treatment. |
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| Keywords: | Lithium ion battery Spinel LiMn 2O 4 Solid state reaction Electrochemical reaction |
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