| 电解Co-Ni-Mn合金制备LiCo1/3Ni1/3Mn1/3正极材料 |
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| 引用本文： | 叶茂,周震,卞锡奎,阎杰.电解Co-Ni-Mn合金制备LiCo1/3Ni1/3Mn1/3正极材料[J].无机化学学报,2006,22(11):2005-2010. |
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| 作者姓名： | 叶茂 周震 卞锡奎 阎杰 |
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| 作者单位： | 南开大学新能源材料化学研究所,天津,300071 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 由Co-Ni-Mn合金出发，采用电解方法合成了含3种过渡金属元素的前驱物，再利用该前驱物制备了锂离子二次电池正极材料LiCo1/3Ni1/3Mn1/3。XRD测试结果表明通过该方法制备的正极材料具有较好的层状结构，SEM测试则显示材料由规则形状的1 μm左右颗粒组成。通过XPS实验证明Co、Ni、Mn 3种过渡金属元素在该材料中的价态分别为+3，+2，+4。采用循环伏安法对材料的电化学行为进行了研究，表明该材料具有较好的充放电可逆性。该材料在150 mA·g-1电流下经过50周的恒电流充放循环后容量仍能保持在160 mAh·g-1。
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| 关 键 词： | 正极材料 锂离子电池 LiCo1/3Ni1/3Mn1/3O2 电解 |
| 文章编号： | 1001-4861(2006)11-2005-06 |
| 收稿时间： | 2006-05-14 |
| 修稿时间： | 2006-08-28 |
Structural and Electrochemical Properties of LiCo1/3Ni1/3Mn1/3O2 Cathode Material by Electrolysis of Co-Ni-Mn Alloy |
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| YE Mao,ZHOU Zhen,BIAN Xi-Kui and YAN Jie.Structural and Electrochemical Properties of LiCo1/3Ni1/3Mn1/3O2 Cathode Material by Electrolysis of Co-Ni-Mn Alloy[J].Chinese Journal of Inorganic Chemistry,2006,22(11):2005-2010. |
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| Authors: | YE Mao ZHOU Zhen BIAN Xi-Kui and YAN Jie |
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| Institution: | Institute of New Energy & Material Chemistry, Nankai University, Tianjin 300071,Institute of New Energy & Material Chemistry, Nankai University, Tianjin 300071,Institute of New Energy & Material Chemistry, Nankai University, Tianjin 300071 and Institute of New Energy & Material Chemistry, Nankai University, Tianjin 300071 |
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| Abstract: | Layered LiCo1/3Ni1/3Mn1/3O2 cathode material was synthesized via a manganese-nickel-cobalt hydroxide precursor by electrolysis of Co-Ni-Mn alloy. The X-ray diffraction (XRD) patterns reveal that the material is crystallized to layered α-NaFeO2 structure, and the scanning electron microscopy (SEM) study shows a good micromorphology and uniform particle size. The oxidation states of the Co, Ni, Mn in this material identified by X-ray photoelectron spectroscopy (XPS) are +3, +2 and +4, respectively. The electrochemical properties were investigated by means of cyclic voltammetry (CV) and galvanostatic charge-discharge cycling test. |
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| Keywords: | cathode material lithium-ion batteries LiCo1/3Ni1/3Mn1/3O2 electrolysis |
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