| Al2O3包覆尖晶石型LiMn2O4的研究 |
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| 引用本文： | 傅鹏立,马利华,陈小娜,张胜利. Al2O3包覆尖晶石型LiMn2O4的研究[J]. 郑州轻工业学院学报(自然科学版), 2007, 22(5): 4-7 |
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| 作者姓名： | 傅鹏立 马利华 陈小娜 张胜利 |
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| 作者单位： | 1. 郑州轻工业学院,材料与化学工程学院,河南,郑州,450002
2. 郑州轻工业学院,现代教育技术中心,河南,郑州,450002 |
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| 摘 要： | 对尖晶石型LiMn2O4表面进行Al2O3包覆,并对其材料结构和电化学性能进行研究.结果表明,Al2O3包覆可有效降低Jahn-Teller畸变,提高电化学性能.当Al的包覆量为3.0%时,材料的放电比容量与循环性能达到最佳,首次放电比容量为113.5 mAh/g,20次循环后,比容量衰减至87.6 mAh/g,容量保持率为77.2%.
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| 关 键 词： | 锂离子电池 Al2O3包覆 |
| 文章编号： | 1004-1478（2007）05-0004-04 |
| 收稿时间： | 2007-05-10 |
| 修稿时间： | 2007-05-10 |
On Al2O3 coating spinel-type LiMn2O4 |
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| FU Peng-li,MA Li-hua,CHEN Xiao-na,ZHANG Sheng-li. On Al2O3 coating spinel-type LiMn2O4[J]. Journal of Zhengzhou Institute of Light Industry(Natural Science), 2007, 22(5): 4-7 |
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| Authors: | FU Peng-li MA Li-hua CHEN Xiao-na ZHANG Sheng-li |
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| Abstract: | Al2O3 was coated on spinel-type LiMn2O4.The structure and electrochemical properties of the material were studied.The results showed that Al2O3 coating can reduce Jahn-Teller distortion,improve electric chemical property.Discharge capacity and cyclic stability of the material were best when Al account for 3.0% of LiMn2O4.The initial discharge specific capacity was 113.5 mAh/g,after 20 cycles,specific capacity was 87.6 mAh/g.The capacity retained 77.2%. |
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| Keywords: | LiMn2O4 |
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