| 锂离子电池Ni-Sn-Sb合金负极材料的制备及其电性能研究 |
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| 引用本文： | 李求忠,游东宏,陈巧平,黄晓辉,陈峰.锂离子电池Ni-Sn-Sb合金负极材料的制备及其电性能研究[J].化工时刊,2010,24(1):7-10. |
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| 作者姓名： | 李求忠 游东宏 陈巧平 黄晓辉 陈峰 |
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| 作者单位： | 宁德师范高等专科学校化学与环境科学系,福建,宁德,352100 |
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| 基金项目： | 福建省教育厅A类科技项目，宁德师范高等专科学校资助项目 |
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| 摘 要： | 采用化学还原-共沉积法制备了Ni-Sn-Sb三元合金材料,用XRD和SEM对其结构和形貌进行表征。根据充放电曲线、循环伏安和交流阻抗谱,探讨了合成电极的嵌/脱锂行为。研究表明:热处理后的Ni-Sn-Sb合金材料呈不均匀粒状结构;首次放电容量达到1 625 mAh.g-1,充电容量为628 mAh.g-1,循环20次后可逆容量仍有334mAh.g-1,库仑效率稳定在90%,具有较好的电化学性能。
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| 关 键 词： | 锂离子电池 Ni—sn—Sb合金 负极材料 电化学性能 |
Preparation and Electrochemical Performance of Ni-Sn-Sb Anode Material for Lithium Ion Batteries |
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| Li Qiuzhong,You Donghong,Chen Qiaoping,Huang Xiaohui,Chen Feng.Preparation and Electrochemical Performance of Ni-Sn-Sb Anode Material for Lithium Ion Batteries[J].Chemical Industry Times,2010,24(1):7-10. |
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| Authors: | Li Qiuzhong You Donghong Chen Qiaoping Huang Xiaohui Chen Feng |
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| Affiliation: | (Chemistry and Environmental Science Department of Ningde Teachers College, Fujian Ningde, 352100) |
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| Abstract: | The Ni -Sn- Sb alloy material was prepared by chemical reduction -coprecipitation method, The structure and appearance was characterized by XRD and SEM. The lithium insertion/extraction was studied by the charge - discharge curves, cyclic voltammograms （CV） and electrochemical impedance spectra （EIS）. Ni - Sn - Sb alloy had a asymmetric grainy structure. The first discharge and charge capacity of Ni - Sn - Sb alloy electrode were 1625 and 628 mAh·g^-1, respectively. The reversible capacity maintained 334 mAh·g^-1 after 20th cycle and its coulombic efficiency reached 90%. The Ni -Sn -Sb alloy showed a better electrochenmical performance. |
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| Keywords: | lithium ion batteries Ni -Sn -Sb alloy anode material electrochemical performance |
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