| 二硫化钦作为锉离子电池负极材料的特性 |
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| 引用本文： | 陈仕玉,王兆翔,房向鹏,赵海雷,刘效疆,陈立泉. 二硫化钦作为锉离子电池负极材料的特性[J]. 物理化学学报, 2011, 27(1): 97-102. DOI: 10.3866/PKU.WHXB20110134 |
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| 作者姓名： | 陈仕玉 王兆翔 房向鹏 赵海雷 刘效疆 陈立泉 |
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| 作者单位： | 1. Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621900, Sichuan Province, P. R. China;2. Laboratory for Solid State Ionics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China;3. School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China |
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| 基金项目： | 国家重点基础研究发展规划项目(973)(2009CB220100)资助~~ |
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| 摘 要： | 采用固相法合成了纯六方相的TiS2粉体. X射线衍射(XRD)、扫描电子显微镜(SEM)结果表明该材料具有特征层状结构, 其颗粒大小在10-20 μm之间. 作为锂离子电池负极材料, TiS2在3.00 V(vs. Li+/Li)以下有3个明显的放电平台, 首次可逆容量达668 mAh·g-1, 在第一个放电电压范围(3.00-1.40 V)内具有优异的循环可逆性. 深度放电时由于Li2S的生成和材料颗粒严重破碎, 在低于0.50 V时材料的循环性能不佳. 通过减小材料颗粒度和提高导电剂含量, TiS2的电化学性能得到显著改善.
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| 关 键 词： | TiS2 锂离子电池 负极材料 充放电机制 改性 |
| 收稿时间： | 2010-08-20 |
| 修稿时间： | 2010-10-15 |
Characterization of TiS2 as an Anode Material for Lithium Ion Batteries |
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| CHEN Shi-Yu,WANG Zhao-Xiang,FANG Xiang-Peng,ZHAO Hai-Lei,LIU Xiao-Jiang,CHEN Li-Quan. Characterization of TiS2 as an Anode Material for Lithium Ion Batteries[J]. Acta Physico-Chimica Sinica, 2011, 27(1): 97-102. DOI: 10.3866/PKU.WHXB20110134 |
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| Authors: | CHEN Shi-Yu WANG Zhao-Xiang FANG Xiang-Peng ZHAO Hai-Lei LIU Xiao-Jiang CHEN Li-Quan |
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| Affiliation: | 1. Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621900, Sichuan Province, P. R. China;2. Laboratory for Solid State Ionics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China;3. School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China |
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| Abstract: | Hexagonal TiS2 was synthesized as a high-capacity anode material for lithium ion batteries.X-ray diffraction(XRD) and scanning electron microscopy(SEM) indicated that this material had a layered structure with particle sizes between 10 and 20 μm.It shows three discharge plateaus between 3.00 and 0.00 V with a reversible capacity of up to 668 mAh·g-1.It has excellent cycling performance between 3.00 and 1.40 V.Particle pulverization and formation of Li2S lead to performance degradation because of the irreversible dissolution of Li2S into the electrolyte below 0.50 V.The addition of extra acetylene black and a decrease in particle size markedly improve the electrochemical performance of the TiS2 anode. |
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| Keywords: | Lithium ion battery TiS2 Anode material Charge-discharge mechanism Modification |
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