| 锂离子电池正极材料锰酸锂掺杂改性研究 |
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| 引用本文： | 张春丽,叶学海,张晓波,付春明,于晓微,肖彩英. 锂离子电池正极材料锰酸锂掺杂改性研究[J]. 无机盐工业, 2012, 44(6): 61-62 |
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| 作者姓名： | 张春丽 叶学海 张晓波 付春明 于晓微 肖彩英 |
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| 作者单位： | 中海油天津化工研究设计院，天津300131 |
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| 摘 要： | 采用固相反应法分别合成正极材料纯相LiMn2O4和LiPrxMn2-xO4（x=0.02、0.04、0.06、0.08、0.10）固溶体。采用扫描电镜（SEM）、X射线衍射（XRD）、恒电流充放电等手段，对合成样品的形貌、结构、电化学性能进行了测试。结果表明：当x=0.06时，固溶体LiPr0.06Mn1.94O4具有良好的尖晶石结构，晶体大小较均匀；固溶体LiPr0.06Mn1.94O4具有良好的高温（55 ℃）循环性能，实验电池在55 ℃、1 C充放电倍率下，循环50次后容量保持率为82.5%。
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| 关 键 词： | LiMn2O4 离子掺杂 锂离子电池 正极材料 |
Modification of cathode material for lithium ion batteries by doping lithium manganate |
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| Zhang Chunli , Ye Xuehai , Zhang Xiaobo , Fu Chunming , Yu Xiaowei , Xiao Caiying. Modification of cathode material for lithium ion batteries by doping lithium manganate[J]. Inorganic Chemicals Industry, 2012, 44(6): 61-62 |
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| Authors: | Zhang Chunli Ye Xuehai Zhang Xiaobo Fu Chunming Yu Xiaowei Xiao Caiying |
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| Affiliation: | CNOOC Tianjin Chemical Research ＆ Design Institute，Tianjin 300131，China |
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| Abstract: | High purity LiMn2O4 and solid solution LiPrxMn2-xO4(x=0.02,0.04,0.06,0.08,0.10)were synthesized by solid-state reaction.Morphologies,structures,and electrochemical properties of the samples were investigated by SEM,XRD,and constant current charge-discharge analysis.Results showed when x=0.06,solid solution LiPr0.06Mn1.94O4 samples exhibited good spinel phase with even crystal size;solid solution LiPr0.06 Mn1.94O4 had good high temperature(55 ℃) cycling performance and its discharge capacity retained 82.5% after running for 50 cycles at 55 ℃ and 1C charge and discharge rate. |
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| Keywords: | LiMn2O4 ion doping lithium ion batteries cathode materials |
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