| Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization | |
Lu, Hongli1,2; Zeng, Shuangwei1,2; Zhao, Dongni1,2 ; Wang, Jie1,2; Quan, Yin1,2; Xu, Fei1,2; Li, Faqiang3; Li, Shiyou1,2
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| 2021-08-10 | |
| 发表期刊 | RSC ADVANCES
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| 卷号 | 11期号:42页码:26102-26109 |
| 摘要 | The optimizing method of electrolyte formulation is always vital for the development of high-performance lithium-ion batteries. Traditional optimization methods are mainly aimed at the optimization of the electrolyte composition type, and less attention is paid to the optimization of the composition proportion in a certain electrolyte formulation. In this paper, in order to balance the relationship between aluminum (Al) foil corrosion inhibition and battery electrochemical performance, the electrolyte system LiFSI0.6-LiBOB0.4-EC/DEC/EMC (1 : 1 : 1, by volume) was optimized by combining the simplex method, normalization and electrochemical testing. A lithium iron phosphate (LiFePO4) cathode with the optimized electrolyte of LiFSI0.53-LiBOB0.35-EC/DEC/EMC (1.3 : 1.5 : 1.5) delivers a high capacity (143.1 mA h g(-1) at 0.5C) and remarkable cycle life (94.9% retention after 100 cycles) at 45 degrees C. The outstanding performance is attributed to the composition of the cathode electrolyte interphase (CEI) containing the solid and dense LiF, AlF3, B2O3 and Li2CO3. This provides a new method and idea for future electrolyte formulation optimization. |
| 关键词 | Aluminum compounds Aluminum corrosion Cathodes Electrochemical corrosion Electrolytes Iron compounds Linear programming Lithium-ion batteries Phosphorus compounds Corrosion inhibition Electrochemical performance Electrochemical testing Electrolyte compositions Electrolyte formulation Electrolyte systems High-performance lithium-ion batteries Lithium iron phosphates |
| DOI | 10.1039/d1ra05156c |
| 收录类别 | EI ; SCOPUS ; SCIE |
| 语种 | 英语 |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Multidisciplinary |
| WOS记录号 | WOS:000680655300032 |
| 出版者 | ROYAL SOC CHEMISTRY |
| EI入藏号 | 20213210740536 |
| EI主题词 | Lithium compounds |
| EI分类号 | 539.1 Metals Corrosion - 702 Electric Batteries and Fuel Cells - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally |
| 来源库 | WOS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/148912 |
| 专题 | 石油化工学院 |
| 通讯作者 | Li, Shiyou |
| 作者单位 | 1.Lanzhou Univ Technol, Sch Petrochem Technol, Lanzhou 730050, Peoples R China; 2.Gansu Engn Lab Electrolyte Mat Lithium Ion Batter, Lanzhou 730050, Peoples R China; 3.Linyi Univ, Sch Mat Sci & Engn, Linyi 276005, Shandong, Peoples R China |
| 第一作者单位 | 兰州理工大学 |
| 通讯作者单位 | 兰州理工大学 |
| 第一作者的第一单位 | 兰州理工大学 |
| 推荐引用方式 GB/T 7714 | Lu, Hongli,Zeng, Shuangwei,Zhao, Dongni,et al. Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization[J]. RSC ADVANCES,2021,11(42):26102-26109. |
| APA | Lu, Hongli.,Zeng, Shuangwei.,Zhao, Dongni.,Wang, Jie.,Quan, Yin.,...&Li, Shiyou.(2021).Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization.RSC ADVANCES,11(42),26102-26109. |
| MLA | Lu, Hongli,et al."Optimizing the composition of LiFSI-based electrolytes by a method combining simplex with normalization".RSC ADVANCES 11.42(2021):26102-26109. |
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