| 锂离子电池硅-锰复合材料的电化学性能 |
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| 引用本文： | 任宁,尹鸽平,左朋建,仝钰进,程新群,史鹏飞.锂离子电池硅-锰复合材料的电化学性能[J].无机化学学报,2005,21(11):1677-1681. |
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| 作者姓名： | 任宁 尹鸽平 左朋建 仝钰进 程新群 史鹏飞 |
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| 作者单位： | 哈尔滨工业大学应用化学系,哈尔滨,150001 |
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| 摘 要： | The Si-Mn composites were synthesized by ball-milling mixtures of four different atomic ratios of Si/Mn. The phases of composites were analyzed with X-ray diffraction. Their charge-discharge performance as negative electrodes in Li-ion batteries were tested and the formation of SEI film was studied by differential capacity plots. The results show that materials prepared by ball-milling technology are composites consisting of Si and Mn. The insertion of lithium ions leads to the formation of amorphous Li-Si alloy. The initial reversible capacity and efficiency of Si-Mn composites are increased and the cycle life is enhanced obviously，especially after their heat treatment. The composite of Si∶Mn=4∶6 exhibits a reversible capacity of 546.0 mAh·g-1 and a charge-discharge efficiency of 70%. The reversible capacity maintains at 374.2 mAh·g-1 after 40 cycles.
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| 关 键 词： | 锂离子电池 硅锰复合材料 电化学性能 |
| 文章编号： | 1001-4861(2005)11-1677-05 |
| 收稿时间： | 2004-12-13 |
| 修稿时间： | 2005-04-29 |
Electrochemical Performance of Si-Mn Composites in Li-ion Battery |
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| REN Ning,YIN Ge-Ping,ZUO Peng-Jian,TONG Yu-Jin,CHENG Xin-Qun and SHI Peng-Fei.Electrochemical Performance of Si-Mn Composites in Li-ion Battery[J].Chinese Journal of Inorganic Chemistry,2005,21(11):1677-1681. |
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| Authors: | REN Ning YIN Ge-Ping ZUO Peng-Jian TONG Yu-Jin CHENG Xin-Qun and SHI Peng-Fei |
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| Institution: | Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001,Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001,Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001,Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001,Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001 and Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001 |
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| Abstract: | |
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| Keywords: | Li-ion battery Si-Mn composite electrochemical performance |
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