| 锂离子电池正极材料LiCexNdxMn2-2xO4（x=0～0.018）的Pechini合成及表征 |
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| 引用本文： | 黄煌,刘心宇,蒙冕武,刘庆业,康彩艳,廖钦洪,黄颖,吕罡.锂离子电池正极材料LiCexNdxMn2-2xO4（x=0～0.018）的Pechini合成及表征[J].桂林工学院学报,2010,30(1):111-114. |
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| 作者姓名： | 黄煌 刘心宇 蒙冕武 刘庆业 康彩艳 廖钦洪 黄颖 吕罡 |
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| 作者单位： | 1. 桂林电子科技大学,信息材料科学与工程学院,广西桂林,541004
2. 广西师范大学,环境与资源学院,广西桂林,541004;广西师范大学,广西环境工程与保护评价重点实验室,广西桂林,541004 |
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| 基金项目： | 广西自然科学基金，广西研究生教育创新计划，广西环境工程与保护评价重点实验室平台建设经费资助项目 |
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| 摘 要： | 采用X射线衍射仪、电池测试系统等,研究了采用Pechini法合成的锂离子电池正极材料LiCexNdxMn2-2xO4（x=0、0.012、0.014、0.016、0.018）的组织结构、首次充放电性能、循环稳定性能等。结果表明：当稀土元素掺入量较少（x≤0.014）时,样品由尖晶石型LiMn2O4相组成,否则,样品中将出现微量的杂质相（CeO2、Nd2O3）;适量的稀土元素掺杂将使LiMn2O4样品的初始容量减小、循环稳定性能增加。LiCe0.014Nd0.014Mn1.972O4样品具有较好的循环稳定性能,其初始放电容量为124.8 mAh/g,经30次循环充放电后的容量保持在116.3 mAh/g,容量保持率为93.2%。
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| 关 键 词： | Pechini方法 尖晶石型LiMn2O4 稀土掺杂 电池正极材料 |
Characterization of Lithium Manganese Oxygen Cathode Materials LiCexNdxMn2-2xO4(x=0-0.018) Synthesized by Pechini Process |
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| HUANG Huang,LIU Xin-yu,MENG Mian-wu,LIU Qing-ye,KANG Cai-yan,LIAO Qin-hong,HUANG Ying,LU Gang.Characterization of Lithium Manganese Oxygen Cathode Materials LiCexNdxMn2-2xO4(x=0-0.018) Synthesized by Pechini Process[J].Journal of Guilin University of Technology,2010,30(1):111-114. |
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| Authors: | HUANG Huang LIU Xin-yu MENG Mian-wu LIU Qing-ye KANG Cai-yan LIAO Qin-hong HUANG Ying LU Gang |
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| Affiliation: | HUANG Huang,LIU Xin-yu,MENG Mian-wu,LIU Qing-ye,KANG Cai-yan,LIAO Qin-hong,HUANG Ying,LU Gang (1.School of Materials Science and Engineering,Guilin University of Electronic Technology,Guilin 541004,China;2.Guangxi Key Laboratory of Environmental Engineering,Protection and Assessment,College of Environment and Resources,Guangxi Normal University,Guilin 541004,China) |
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| Abstract: | The phase structure,the initial discharge-capacity and cyclic properties of Lithium Ion Cathode Materials LiCexNdxMn2-2xO4（x=0,0.012,0.014,0.016,0.018） prepared by pechini method are investigated by X-ray diffraction（XRD） and battery testing system.The results show that the samples with the content of rare earth less than 0.014 are composed of single spinel LiMn2O4 phase,while,the specimen consists of the LiMn2O4 CeO2 and Nd2O3 phases.The initial discharge capacity of the LiMn2O4 sample would decrease,and the cyclic stability of the specimen would increase with the manganese partial replaced by the rare earth elements.The LiCe0.014Nd0.014Mn1.972O4 sample has good cyclic properties with discharge-capacity 124.8 mAh/g and 116.3 mAh/g after the first and the 30th charge/discharge cycles. |
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| Keywords: | Pechini method the spinel LiMn2O4 phase doped by rare earth performance |
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