Nonpolar Cosolvent Driving LUMO Energy Evolution of Methyl Acetate Electrolyte to Afford Lithium-Ion Batteries Operating at-60 degrees C
文献类型：期刊论文
| 作者 | Lei, Sheng1,4; Zeng, Ziqi4; Yan, Hui2; Qin, Mingsheng1,4; Liu, Mengchuang3,4; Wu, Yuanke1,4; Zhang, Han1,4; Cheng, Shijie4; Xie, Jia4 |
| 刊名 | ADVANCED FUNCTIONAL MATERIALS
 |
| 出版日期 | 2023-05-14 |
| 页码 | 10 |
| 关键词 | lithium-ion batteries low-temperature methyl acetate reductive stability |
| ISSN号 | 1616-301X |
| DOI | 10.1002/adfm.202301028 |
| 通讯作者 | Zeng, Ziqi(ziqizeng@hust.edu.cn) ; Xie, Jia(xiejia@hust.edu.cn) |
| 英文摘要 | The operation of lithium-ion batteries (LIBs) at low temperatures (<-20 degrees C) is hindered by the low conductivity and high viscosity of conventional carbonate electrolytes. Methyl acetate (MA) has proven to be a competitive low-temperature electrolyte solvent with low viscosity and low freezing point, but its interfacial stability is poor and remains elusive until now. Here, it is revealed thaat the reductive stability of MA-based electrolytes is fundamentally governed by the anion-prevailed solvation structure. Based on this framework, fluorobenzene is employed in the electrolyte to promote the entry of anions into the solvation shell via dipole-dipole interactions and the generation of free MA, thus enhancing the lowest unoccupied molecular orbital energy of MA. The designed electrolyte enables LiCoO2 (LCO)/graphite cells to exhibit excellent cycling performance at -20 degrees C (90% retention after 1000 cycles at 1 C) and to remain 91% of their room-temperature capacity at a super-low temperature of -60 degrees C at 0.05 C. Thanks to the plentiful free MA, this electrolyte has a high conductivity (2.61 mS cm(-1)) at -60 degrees C and allows LCO/graphite cell to charge at -60 degrees C. This study offers the possibility of practical applications for those solvents with poor reductive stability and provides new approaches to designing advanced electrolytes for low-temperature applications. |
| 资助项目 | National Key Research and Development Program of China[2022YFB2404800] ; National Natural Science Foundation of China[U1966214] ; National Natural Science Foundation of China[22008082] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000987348900001 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/178111]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zeng, Ziqi; Xie, Jia |
| 作者单位 | 1.Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 3.Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Wuhan 430074, Peoples R China 4.Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lei, Sheng,Zeng, Ziqi,Yan, Hui,et al. Nonpolar Cosolvent Driving LUMO Energy Evolution of Methyl Acetate Electrolyte to Afford Lithium-Ion Batteries Operating at-60 degrees C[J]. ADVANCED FUNCTIONAL MATERIALS,2023:10. |
| APA | Lei, Sheng.,Zeng, Ziqi.,Yan, Hui.,Qin, Mingsheng.,Liu, Mengchuang.,...&Xie, Jia.(2023).Nonpolar Cosolvent Driving LUMO Energy Evolution of Methyl Acetate Electrolyte to Afford Lithium-Ion Batteries Operating at-60 degrees C.ADVANCED FUNCTIONAL MATERIALS,10. |
| MLA | Lei, Sheng,et al."Nonpolar Cosolvent Driving LUMO Energy Evolution of Methyl Acetate Electrolyte to Afford Lithium-Ion Batteries Operating at-60 degrees C".ADVANCED FUNCTIONAL MATERIALS (2023):10. |
入库方式： OAI收割
来源：金属研究所
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。