| Co掺杂对锂离子电池材料LiMn2O4性能的影响 |
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| 引用本文： | 耿树东,;翟玉春.Co掺杂对锂离子电池材料LiMn2O4性能的影响[J].黄金学报,2014(3):233-236. |
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| 作者姓名： | 耿树东 ;翟玉春 |
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| 作者单位： | [1]东北大学材料与冶金学院,沈阳110819; [2]吉林化工学院材料科学与工程学院,吉林132022 |
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| 基金项目： | 国家自然科学基金重点项目（51234009） |
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| 摘 要： | 采用高温固相法和溶胶-凝胶法制备LiCoXMn2-XO4（x=0,0.05,0.1,0.2）,研究了掺杂Co后,材料的相结构和充放电性能,并与LiMn2O4相对比.结果表明：掺杂Co后材料的充放电性能相对LiMn2O4均有所提高;两种方法制备的LiCoXMn2-XO4循环40次后,容量保持率、放电比容量均优于LiMn2O4;且当x=0.05时,两种方法制备的LiCoXMn2-XO4的充放电性能均明显优于x=0.1和x=0.2时.
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| 关 键 词： | Co掺杂 锂离子电池 LiMn2O4 相结构 溶胶-凝胶法 |
Effect of cobalt doping on the performance of lithium ion battery material LiMn2O4 |
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| Affiliation: | Geng Shudong, Zhai Yuchun (1. School of Materials ＆Metallurgy, Northeastern University, Shenyang 110819, China; 2. School of Materials Science ＆ Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China) |
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| Abstract: | LiCoXMn2- XO4（ x =0,0.05,0.1,0.2） cathode materials were prepared by the methods of solid state reaction and sol- gel,respectively. By Co doping,the phase structure and electrochemical properties of the prepared materials were investigated. The results showed that the charge- discharge properties of the Co doped materials were improved. The capacity retention rate and discharge specific capacity were better than those of pure LiMn2O4 after 40 cycles. The charge- discharge properties of LiCo0. 05Mn1. 95O4 were prepared by the two methods was preferable to that of LiCo0. 1Mn1. 9O4and LiCo0. 2Mn1. 8O4. |
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| Keywords: | Co doping lithium ion battery LiMn2O4 phase structure sol-gel method |
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