Transport and Electrochemical Properties and Spectral Features of Non-Aqueous Electrolytes Containing LiFSI in Linear Carbonate Solvents
文献类型：期刊论文
| 作者 | Li, LF ; Zhou, SS ; Han, HB ; Li, H ; Nie, J ; Armand, M ; Zhou, ZB ; Huang, XJ |
| 刊名 | JOURNAL OF THE ELECTROCHEMICAL SOCIETY
 |
| 出版日期 | 2011 |
| 卷号 | 158期号:2页码:A74 |
| 关键词 | LITHIUM-ION BATTERIES LIQUID ELECTROLYTES POLYMER BATTERIES SALT BIS(FLUOROSULFONYL)IMIDE TEMPERATURES CONDUCTANCE MIXTURES LIFEPO4 IMIDE |
| ISSN号 | 0013-4651 |
| 通讯作者 | Li, LF (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | Lithium bis(fluorosulfonyl)imide (LiFSI) has been investigated as a conducting salt of liquid electrolytes for lithium-ion batteries. It shows high solubility in most polar solvents, and a concentration of 5 M (mol dm(-3)) is reached in dimethyl carbonate (DMC) despite its low dielectric constant. LiFSI shows a thermal stability up to 180 degrees C on the thermogravimetric test. Compared with the LiPF(6)/carbonate electrolytes, the LiFSI-based ones show higher ionic conductivities over a wide temperature range (-50 to 50 degrees C) and higher lithium-ion transference numbers (t(Li+)) of 0.5-0.6. The conductivities of the LiFSI/DMC electrolyte over the 0.1-5 M concentration range obey a modified Casteel-Amis equation. The temperature dependence of 1 M LiFSI/DMC/EMC (3:7, v/v) is governed by the Vogel-Tammann-Fulcher relationship. The Fourier transform infrared spectra of the LiFSI/DMC electrolytes at different concentrations are systematically investigated. DMC shows significant spectral variations upon adding LiFSI, indicating strong interaction of Li(+) cations with the solvent molecules. We also found that the compatibility with graphite anode and LiFePO(4) cathode in the LiFSI-based electrolyte is as good as that in the LiPF(6)-based one, though aluminum (Al) corrosion occurs above 4 V vs Li(+)/Li. LiFSI is a very good contender to replace the latter, with increased performances and safety. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3514705] All rights reserved. |
| 收录类别 | SCI |
| 资助信息 | NSFC [50730005]; CAS [KJCX2-YW-W26] |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/46102]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Li, LF,Zhou, SS,Han, HB,et al. Transport and Electrochemical Properties and Spectral Features of Non-Aqueous Electrolytes Containing LiFSI in Linear Carbonate Solvents[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2011,158(2):A74. |
| APA | Li, LF.,Zhou, SS.,Han, HB.,Li, H.,Nie, J.,...&Huang, XJ.(2011).Transport and Electrochemical Properties and Spectral Features of Non-Aqueous Electrolytes Containing LiFSI in Linear Carbonate Solvents.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,158(2),A74. |
| MLA | Li, LF,et al."Transport and Electrochemical Properties and Spectral Features of Non-Aqueous Electrolytes Containing LiFSI in Linear Carbonate Solvents".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 158.2(2011):A74. |
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来源：物理研究所
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