| Al_2O_3包覆对富锂锰基正极材料Li_(1.2)Mn_(0.54)Co_(0.13)Ni_(0.13)O_2的电化学性能影响 |
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| 引用本文： | 徐群杰,甘正旭,何超,刘新暖,常幸萍.Al_2O_3包覆对富锂锰基正极材料Li_(1.2)Mn_(0.54)Co_(0.13)Ni_(0.13)O_2的电化学性能影响[J].上海电力学院学报,2016,32(4):311-315,326. |
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| 作者姓名： | 徐群杰 甘正旭 何超 刘新暖 常幸萍 |
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| 作者单位： | 上海电力学院 环境与化学工程学院,上海电力学院 环境与化学工程学院,上海电力学院 环境与化学工程学院,上海电力学院 环境与化学工程学院,上海电力学院 环境与化学工程学院 |
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| 基金项目： | 上海市自然科学基金（15ZR1418100）；上海市企业自主创新专项项目（CXY-2014-24）；上海市大学生科技创新项目（2012241）. |
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| 摘 要： | 采用水热法合成富锂三元正极材料,探究了最佳包覆比例下Al_2O_3包覆对材料的电化学性能影响.采用扫描电镜(SEM)和X射线衍射仪(XRD)表征了富锂三元正极材料的表面形貌和结构,通过循环伏安(CV)、交流阻抗(EIS)技术分析了材料电化学性的影响因素.结果表明,通过异丙醇铝水解制得了氧化铝包覆层,提高了材料的比容量,稳定了材料的结构.
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| 关 键 词： | 锂离子电池 正极材料 Al2O3包覆 水热法 |
| 收稿时间： | 2015/9/30 0:00:00 |
Effect of Al2O3 Surface Modification on the Electrochemical Performance of Li-rich Cathode Materials Li1.2Mn0.54Co0.13Ni0.13O2 |
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| XU Qunjie,GAN Zhengxu,HE Chao,LIU Xinnuan and CHANG Xingping.Effect of Al2O3 Surface Modification on the Electrochemical Performance of Li-rich Cathode Materials Li1.2Mn0.54Co0.13Ni0.13O2[J].Journal of Shanghai University of Electric Power,2016,32(4):311-315,326. |
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| Authors: | XU Qunjie GAN Zhengxu HE Chao LIU Xinnuan and CHANG Xingping |
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| Affiliation: | School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China,School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China,School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China,School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China and School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China |
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| Abstract: | Lithium-rich cathode material is prepared by hydrothermal method and Al2O3 coating on lithium-rich cathode material is also explored.The surface morphology and structure of the materials are characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD).The factors influencing the electrochemical properties are analyzed by cyclic voltammograms (CV) and electrochemical impedance spectroscopy (EIS) technique.Results indicate that alumina coating layer obtained by the hydrolysis by isopropanol aluminum improves the specific capacity of the material and stabilizes the structure of the material. |
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| Keywords: | lithium ion battery cathode materials Al2O3 coating hydrothermal method |
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