| 尖晶石型LiMn1.98Ti0.02O3.998F0.002的制备及电化学性能 |
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| 引用本文： | 马尚德,黄睿,张小聪,高蕾,侯敏,王路. 尖晶石型LiMn1.98Ti0.02O3.998F0.002的制备及电化学性能[J]. 电源技术, 2009, 33(5) |
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| 作者姓名： | 马尚德 黄睿 张小聪 高蕾 侯敏 王路 |
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| 作者单位： | 上海南都能源科技有限公司,上海,201206 |
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| 摘 要： | 为提高锂离子电池正极材料尖晶石型LiMn2O4的大电流放电性能,以TiO2和LiF为掺杂体采用固相法制备了LiMn1.98Ti0.02O3.998F0.002,并与未掺杂的LiMn2O4进行性能比较。X射线衍射(XRD)和扫描电子显微镜(SEM)分析表明,LiMn1.98Ti0.02O3.998F0.002具有与LiMn2O4同样的尖晶石结构,并且颗粒细小,粒度分布窄,颗粒表面光滑。电化学测试结果显示,LiMn1.98Ti0.02O3.998F0.002具备大电流放电能力和良好的循环稳定性。
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| 关 键 词： | 正极材料 锰酸锂 掺杂 |
Preparation and electrochemical property of spinel LiMn1.98Ti0.02O3.998F0.002 |
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| MA Shang-de,HUANG Rui,ZHANG Xiao-cong,GAO Lei,HOU Min,WANG Lu. Preparation and electrochemical property of spinel LiMn1.98Ti0.02O3.998F0.002[J]. Chinese Journal of Power Sources, 2009, 33(5) |
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| Authors: | MA Shang-de HUANG Rui ZHANG Xiao-cong GAO Lei HOU Min WANG Lu |
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| Affiliation: | Shanghai Narada Licom Power Tech Co.;Ltd.;Shanghai 201206;China |
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| Abstract: | In order to increase the large-current discharge property of LiMn2O4, LiMn1.98Ti0.02O3.998F0.002 was prepared through solid-state method with TiO2 and LiF as dopant, and the properties of LiMn1.98Ti0.02O3.998F0.002 were compared with those of LiMn2O4. The results of X-ray diffraction and scanning electron microscopy analyses indicate that LiMn1.98Ti0.02O3.998F0.002, as the same with LiMn2O4, exhibits a cubic spinel structure with smaller particle size, narrower particle distribution and smooth surface morph... |
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| Keywords: | cathode material LiMn2O4 doping |
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