3-cyano-5-fluorobenzenzboronic acid as an electrolyte additive for enhancing the cycling stability of Li1.2Mn0.54Ni0.13Co0.13O2 cathode at high voltage | |
Gu, Shijie1; Cui, Yingyue1; Wen, Kaihua2; Chen, Shimou2; Zhao, Jianling1 | |
刊名 | JOURNAL OF ALLOYS AND COMPOUNDS |
2020-07-15 | |
卷号 | 829页码:10 |
关键词 | Lithium-ion Batteries Li-rich Cathode Electrolyte Additive 3-cyano-5-fluorophenylboronic Acid Cathode-electrolyte Interface |
ISSN号 | 0925-8388 |
DOI | 10.1016/j.jallcom.2020.154491 |
英文摘要 | Layered lithium/manganese-rich oxides (LMR) receive much attention due to its high specific capacity (similar to 300 mAh g(-1)). However, the serious capacity degradation during cycling hinders the commercial application of the LMR. Herein, 3-cyano-5-fluorophenylboronic acid (CFBA) was applied as an electrolyte additive for enhancing the cycling stability of LMR at high voltage. Linear sweep voltammetry (LSV), density function theory (DFT) calculations and the initial charge dQ/dV profiles indicate that the preferential oxidation of CFBA can improve the oxidative stability of electrolyte. By adding 0.7 wt% CFBA into standard (STD) electrolyte (1 M LiPF6 in EC:EMC:DMC = 1:1:1, by weight), the LMR/Li half-cell delivered a discharge capacity of 245 mAh g(-1) with a capacity retention of 88.4% after 200 cycles at 0.5C, while only 68 mAh g(-1) with 25.2% retention in STD electrolyte. Further characterizations and theoretical calculation illustrate that CFBA can effectively eliminate the harmful HF, which improve the electrochemical performance. More importantly, the CFBA participates in the formation of a thin and uniform protective cathode-electrolyte interface (CEI) film on the surface of LMR, which effectively suppresses electrolyte decomposition and protects the structural integrity of LMR. (C) 2020 Elsevier B.V. All rights reserved. |
资助项目 | National Key Projects for Fundamental Research and Development of China[2016YFB0100104] ; National Natural Science Foundation of China[51922099] ; National Natural Science Foundation of China[21890762] ; Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-JSC011] ; Science and Technology Open Cooperation Project of Henan Province[182106000022] |
WOS关键词 | Lithium-ion Battery ; Rich Oxide Cathode ; Electrochemical Performance ; Interfacial Stability ; Layered Oxide ; Li ; Surface ; Spinel ; Tris(Trimethylsilyl)Borate ; Li1.2ni0.13co0.13mn0.54o2 |
WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE SA |
WOS记录号 | WOS:000523555300001 |
资助机构 | National Key Projects for Fundamental Research and Development of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Science and Technology Open Cooperation Project of Henan Province |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/39902] |
专题 | 中国科学院过程工程研究所 |
通讯作者 | Chen, Shimou; Zhao, Jianling |
作者单位 | 1.Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Gu, Shijie,Cui, Yingyue,Wen, Kaihua,et al. 3-cyano-5-fluorobenzenzboronic acid as an electrolyte additive for enhancing the cycling stability of Li1.2Mn0.54Ni0.13Co0.13O2 cathode at high voltage[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2020,829:10. |
APA | Gu, Shijie,Cui, Yingyue,Wen, Kaihua,Chen, Shimou,&Zhao, Jianling.(2020).3-cyano-5-fluorobenzenzboronic acid as an electrolyte additive for enhancing the cycling stability of Li1.2Mn0.54Ni0.13Co0.13O2 cathode at high voltage.JOURNAL OF ALLOYS AND COMPOUNDS,829,10. |
MLA | Gu, Shijie,et al."3-cyano-5-fluorobenzenzboronic acid as an electrolyte additive for enhancing the cycling stability of Li1.2Mn0.54Ni0.13Co0.13O2 cathode at high voltage".JOURNAL OF ALLOYS AND COMPOUNDS 829(2020):10. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
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。
修改评论