CAS OpenIR
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
2020-07-15
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume829Pages:10
Abstract

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.

KeywordLithium-ion Batteries Li-rich Cathode Electrolyte Additive 3-cyano-5-fluorophenylboronic Acid Cathode-electrolyte Interface
DOI10.1016/j.jallcom.2020.154491
Language英语
WOS KeywordLithium-ion Battery ; Rich Oxide Cathode ; Electrochemical Performance ; Interfacial Stability ; Layered Oxide ; Li ; Surface ; Spinel ; Tris(Trimethylsilyl)Borate ; Li1.2ni0.13co0.13mn0.54o2
Funding ProjectNational 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 Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational 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
WOS IDWOS:000523555300001
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/39903
Collection中国科学院过程工程研究所
Corresponding AuthorChen, Shimou; Zhao, Jianling
Affiliation1.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
Recommended Citation
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.
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