| 碳包覆MnSn2锂离子电池负极材料合成及性能 |
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| 引用本文： | 袁正勇,邱从平,彭振博.碳包覆MnSn2锂离子电池负极材料合成及性能[J].电源技术,2012,36(1):40-41,129. |
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| 作者姓名： | 袁正勇 邱从平 彭振博 |
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| 作者单位： | 1. 宁波职业技术学院 应用化工系,浙江 宁波,315800
2. 宁波职业技术学院 应用化工系,浙江 宁波315800;中国科学院 宁波材料技术与工程研究所,浙江 宁波315201 |
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| 基金项目： | 浙江省教育厅科研计划项目 |
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| 摘 要： | 用球磨-热解法合成了碳包覆锂离子电池锰锡合金负极材料MnSn2/C.通过XRD、TEM和电化学测试对材料进行了表征.制备的材料粒径大小分布在1～2μm之间,合金材料表面完全被碳包覆,碳层厚度约为60～ 120 nm.在充放电电压为1.5 V到0V范围内,初始可逆充电比容量为675 mAh/g,经过20周的循环后,充电比容量仍然保持为440mAh/g.与没有碳包覆的MnSn2贸极材料相比,其循环性能有较大提高.
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| 关 键 词： | 锰锡合金 锂离子电池 负极材料 |
Preparation and properties of carbon-coated MnSn2 as anode for lithium ion battery |
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| YUAN Zheng-yong
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QIU Cong-ping
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PENG Zhen-bo.Preparation and properties of carbon-coated MnSn2 as anode for lithium ion battery[J].Chinese Journal of Power Sources,2012,36(1):40-41,129. |
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| Authors: | YUAN Zheng-yong QIU Cong-ping PENG Zhen-bo |
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| Affiliation: | 1,2(1.Department of Applied Chemical Engineering,Ningbo Polytechnic College,Ningbo Zhejiang 315800,China; 2.Ningbo Institute of Materials Technology & Engineering,Chinese Academy of Sciences,Ningbo Zhejiang 315201,China) |
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| Abstract: | Carbon-coated manganese tin alloy,MnSn2/C was synthesized as anode material for lithium ion batteries by ball-milling pyrolysis method.The product was characterized by XRD,TEM and electrochemical measurements.The size of the particles is the range of 1 μm to 2 μm,and carbon coating is complete in alloy material surface with 60-120 nm thickness.The reversible specific capacity of the prepared MnSn2/C is 675 mAh/g in the first cycle and the rest charge specific capacity is 440 mAh/g in the 20th cycle when the cell is discharged and charged between 1.5 V and 0 V.The results show that carbon-coated manganese tin alloy exhibits better electrochemical property than uncoated manganese tin alloy. |
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| Keywords: | manganese tin alloy lithium ion batteries anode materials |
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