Dual-additives enable stable electrode-electrolyte interfaces for long life Li-SPAN batteries
文献类型：期刊论文
| 作者 | Guo, Zhenqiang1,2; Yang, Huicong1,2; Wei, Qian1,2; Xu, Shengjun1,2; Hu, Guangjian1,2,5; Bai, Shuo1,2; Li, Feng1,2,3,4 |
| 刊名 | CHINESE CHEMICAL LETTERS
 |
| 出版日期 | 2024-05-01 |
| 卷号 | 35期号:5页码:7 |
| 关键词 | Sulfurized polyacrylonitrile Lithium metal Interface film 2-Fluoropyridine Difluorobis (oxalato) phosphate |
| ISSN号 | 1001-8417 |
| DOI | 10.1016/j.cclet.2023.108622 |
| 通讯作者 | Hu, Guangjian(gjhu@imr.ac.cn) ; Li, Feng(fli@imr.ac.cn) |
| 英文摘要 | Sulfurized polyacrylonitrile (SPAN) is proposed as a promising cathode material for lithium sulfur batteries. However, the continuous side reactions at the electrolyte-electrode interfaces as well as the slow redox kinetics of SPAN cathode deteriorate the electrochemical performance. In this study, an electrolyte with dual-additives comprising 2-fluoropyridine (2-FP) and lithium difluorobis (oxalato) phosphate (LiDFBOP) was used to improve the performance of Li||SPAN cells. 2-FP has a lower lowest occupied molecular orbital energy than that of the solvents in the electrolyte, leading to its prior reduction. A LiF-rich film can be formed on the electrode, effectively improving the stability of the electrolyte-electrode interfaces and prolonging the life. Simultaneously, LiDFBOP could form an electrolyte-electrode interface film containing a large amount of Li x PO y F z species, compensating for the kinetic deterioration caused by the lower ionic conductive of LiF formed at the electrolyte-electrode interface. Hence, an electrode-interface film with good chemical stability and high Li + transport was established by LiF and Li x PO y F z -rich species. The Li||SPAN cell with the electrolyte containing dual-additives demonstrates an excellent capacity retention of 97.5% after 200 cycles at 1.0 C, 25 degrees C, comparing to 56.2% capacity retention without additives. Moreover, the rate capacities of cells with dual-additives can reach 1128.1 mAh/g at 5 C, comparing to only 813.5 mAh/g using electrolyte without additives. Our results shown that the dual-additives in electrolyte provide a promising strategy for practical application of lithium sulfur batteries with SPAN cathodes. (c) 2024 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. |
| 资助项目 | National Natural Science Foundation of China[52072378] ; National Natural Science Foundation of China[22209189] ; National Key R&D Program of China[2022YFB3803400] ; Strategic Priority Research Program of the Chinese Academy of Sciences[2022YFB3803400] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22010602] ; Shenyang Science and Technology Program[22-322-3-19] |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:001221845400001 |
| 出版者 | ELSEVIER SCIENCE INC |
| 资助机构 | National Natural Science Foundation of China ; National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Shenyang Science and Technology Program |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Hu, Guangjian; Li, Feng |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Inst Met Sci & Technol, Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.China Med Univ, Coll Life Sci, Dept Biochem & Mol Biol, Shenyang 110122, Peoples R China 4.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 5.Shenyang King Power Technol Co Ltd, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Zhenqiang,Yang, Huicong,Wei, Qian,et al. Dual-additives enable stable electrode-electrolyte interfaces for long life Li-SPAN batteries[J]. CHINESE CHEMICAL LETTERS,2024,35(5):7. |
| APA | Guo, Zhenqiang.,Yang, Huicong.,Wei, Qian.,Xu, Shengjun.,Hu, Guangjian.,...&Li, Feng.(2024).Dual-additives enable stable electrode-electrolyte interfaces for long life Li-SPAN batteries.CHINESE CHEMICAL LETTERS,35(5),7. |
| MLA | Guo, Zhenqiang,et al."Dual-additives enable stable electrode-electrolyte interfaces for long life Li-SPAN batteries".CHINESE CHEMICAL LETTERS 35.5(2024):7. |
入库方式： OAI收割
来源：金属研究所
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