Molten salt of lithium bis(fluorosulfonyl)imide (LiFSI)-potassium bis(fluorosulfonyl)imide (KFSI) as electrolyte for the natural graphite/LiFePO4 lithium-ion cell
文献类型：期刊论文
| 作者 | Xu, F ; Liu, CY ; Feng, WF ; Nie, J ; Li, H ; Huang, XJ ; Zhou, ZB |
| 刊名 | ELECTROCHIMICA ACTA
 |
| 出版日期 | 2014 |
| 卷号 | 135页码:217 |
| 关键词 | Molten salt electrolyte lithium-ion batteries bis(fluorosulfonyl)imide impedance |
| ISSN号 | 0013-4686 |
| 通讯作者 | Zhou, ZB (reprint author), Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Minist Educ, Key Lab Large Format Battery Mat & Syst, 1037 Luoyu Rd, Wuhan 430074, Peoples R China. |
| 中文摘要 | The binary eutectic mixture of lithium bis(fluorosulfonyl)imide (LiFSI) and potassium bis(fluorosulfonyl)imide (KFSI) with a molar ratio of x(LiFSI): x(KFSI) = 0.41: 0.59 has been investigated as molten salt electrolyte for natural graphite/LiFePO4 lithium-ion cells at 80 degrees C. The electrochemical performances of the Li/natural graphite, Li/LiFePO4, and natural graphite/LiFePO4 cells using this molten salt electrolyte have been evaluated, in terms of cycling performances and electrochemical impedance spectra (EIS) at 80 degrees C. Both the Li/natural graphite and Li/LiFePO4 cells show good cycling performances. The initial specific capacities after conditioning for the natural graphite and LiFePO4 electrodes are 353 and 150 mAh g(-1), respectively, and the corresponding capacity retention rates are 98% and 97%, respectively, after 100 cycles at 80 degrees C, except for a large irreversible capacity (162 mAh g(-1)) observed for the natural graphite at the first cycle for forming solid electrolyte interface (SEI) film. The natural graphite/LiFePO4 lithium-ion cell using this molten salt electrolyte shows a low capacity in the range of 71-86 mAh g(-1), due to the large irreversible capacity (71 mAh g(-1)) at the first cycle, but it shows a good cycleability after the first cycle, and provides a specific capacity of 71 mAh g(-1) after 100 cycles at 80 degrees C. The variations of cycling performances of these cells can be well correlated with their impedance evolution with cycling. (C) 2014 Elsevier Ltd. All rights reserved. |
| 资助信息 | National Natural Science Foundation of China [51172083]; Foundation of Talent Introduction of Huazhong University of Science and Technology |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59059]  |
| 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 | Xu, F,Liu, CY,Feng, WF,et al. Molten salt of lithium bis(fluorosulfonyl)imide (LiFSI)-potassium bis(fluorosulfonyl)imide (KFSI) as electrolyte for the natural graphite/LiFePO4 lithium-ion cell[J]. ELECTROCHIMICA ACTA,2014,135:217. |
| APA | Xu, F.,Liu, CY.,Feng, WF.,Nie, J.,Li, H.,...&Zhou, ZB.(2014).Molten salt of lithium bis(fluorosulfonyl)imide (LiFSI)-potassium bis(fluorosulfonyl)imide (KFSI) as electrolyte for the natural graphite/LiFePO4 lithium-ion cell.ELECTROCHIMICA ACTA,135,217. |
| MLA | Xu, F,et al."Molten salt of lithium bis(fluorosulfonyl)imide (LiFSI)-potassium bis(fluorosulfonyl)imide (KFSI) as electrolyte for the natural graphite/LiFePO4 lithium-ion cell".ELECTROCHIMICA ACTA 135(2014):217. |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。