| Coating of LiNi1/3Mn1/3CO1/3O2 cathode materials with alumina by solid state reaction at room temperature |
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| 作者姓名： | 彭忠东 邓新荣 杜柯 胡国荣 高旭光 刘业翔 |
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| 作者单位： | School of Metallurgical Science and Engineering Central South University，School of Metallurgical Science and Engineering Central South University，School of Metallurgical Science and Engineering Central South University，School of Metallurgical Science and Engineering Central South University，School of Metallurgical Science and Engineering Central South University，School of Metallurgical Science and Engineering Central South University，Changsha 410083 China，Changsha 410083 China，Changsha 410083 China，Changsha 410083 China，Changsha 410083 China，Changsha 410083 China |
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| 摘 要： | Alumina coated LiNi1/3Mn1/3Co1/3O2 particles were obtained by a simple method of solid state reaction at room temperature. The reaction mechanism of solid state reaction at room temperature was investigated. The structure and morphology of the coating materials were investigated by XRD, SEM and TEM. The electrochemical performances of uncoated and Al2O3-coated LiNi1/3Co1/3Mn1/3O2 cathode materials were studied within a voltage window of 3.00-4.35 V at current density of 30 mA/g. SEM, TEM and EDS analytical results indicate that the surface of LiNi1/3Mn1/3Co1/3O2 particles is coated with very fine Al2O3 composite, which leads to the improved cycle ability though a slight decrease in the first discharge capacity is observed. It is proposed that surface treatment by solid state reaction at room temperature is a simple and effective method to improve the cycle performance of LiNi1/3Co1/3Mn1/3O2 particles.
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| 关 键 词： | LiNi1/3Mn1/3CO1/3O2电极 氧化铝涂层 固态反应 电化学性质 |
| 收稿时间： | 2007-07-23 |
| 修稿时间： | 2007-09-08 |
Coating of LiNi1/3Mn1/3Co1/3O2 cathode materials with alumina by solid state reaction at room temperature |
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| Peng Zhong-dong , Deng Xin-rong , Du Ke , Hu Guo-rong , Gao Xu-guang and Liu Ye-xiang.Coating of LiNi1/3Mn1/3CO1/3O2 cathode materials with alumina by solid state reaction at room temperature[J].Journal of Central South University of Technology,2008,15(1):34-38. |
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| Authors: | Peng Zhong-dong Deng Xin-rong Du Ke Hu Guo-rong Gao Xu-guang and Liu Ye-xiang |
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| Affiliation: | (1) School of Metallurgical Science and Engineering, Central South University, Changsha, 410083, China |
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| Abstract: | Alumina coated LiNi1/3Mn1/3Co1/3O2 particles were obtained by a simple method of solid state reaction at room temperature. The reaction mechanism of solid state reaction at room temperature was investigated. The structure and morphology of the coating materials were investigated by XRD, SEM and TEM. The electrochemical performances of uncoated and Al2O3-coatedLiNi1/3Co1/3Mn1/3O2 cathode materials were studied within a voltage window of 3.00-4.35 V at current density of 30 Ma/g. SEM,TEM and EDS analytical results indicate that the surface of LiNi1/3Mn1/3Co1/3O2 particles is coated with very fine Al2O3 composite, which leads to the improved cycle ability though a slight decrease in the first discharge capacity is observed. It is proposed that surface treatment by solid state reaction at room temperature is a simple and effective method to improve the cycle performance ofLiNi1/3Co1/3Mn1/3O2 particles. |
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| Keywords: | solid state reaction preparation electrochemical property LiNi1/3Mn1/3Co1/3O2 alumina coating |
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