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Cathode-anode reaction products interplay enabling high performance of LiNi0.8Co0.1Mn0.1O2/artificial graphite pouch batteries at elevated temperature
Zhao, Huajun1; Qian, Yunxian3; Luo, Guangfu1; Chang, Jian1; Wang, Chaoyang4; Wang, Jun1; Shao, Huaiyu2; Deng, Yonghong1
2021-12-01
Source PublicationJournal of Power Sources
ISSN0378-7753
Volume514
Abstract

LiNiCoMnO (NCM811) cathode coupling with artificial graphite (AG) is a promising tendency for high-energy-density batteries. However, realization of long-term lifespan under current realistic conditions remains a “Gordian knot” for large-scale commercialization-oriented realm owing to the aggressive and highly reactive Ni sites on the delithiated cathodes and electrolyte exhaustion. Vinylene carbonate (VC) is commonly employed as the additive for graphite anode in carbonate electrolytes. However, VC has limited protection ability for NCM811/AG, especially for high-temperature cycling, showing conspicuous gas generation and large interfacial resistance. Herein, advanced carbonate-based electrolytes containing vinylene carbonate (VC) and phosphate compounds like triallyl phosphate (TPPC2) and tripropargyl phosphate (TPPC3) as electrolyte additives are reported to improve the performance of NCM811/AG pouch cells at elevated temperature. Theoretical calculations and comprehensive characterizations reveal that these two electrolytes well regulate the electrodes interface with more robust and homogenous films. Moreover, the TPPC2 and TPPC3 additives exhibit stronger tendency to eliminate the corrosive active oxygen (O) released from NCM811. These merits mitigate the electrolyte decomposition, decrease the gas generation, inhibit the dissolution of transition metals from cathode, and protect the structure stability of NCM811. Such outstanding electrochemical performance reveals promising prospects in the commercialized application of NCM811/AG batteries.

KeywordHigh-energy-density Batteries Nickel-rich Cathodes Phosphate Compounds Solid Electrolyte Interphases Vinylene Carbonate
DOI10.1016/j.jpowsour.2021.230583
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary 9.127
WOS IDWOS:000707655800003
Scopus ID2-s2.0-85116205484
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorWang, Jun; Shao, Huaiyu; Deng, Yonghong
Affiliation1.Southern Univ Sci & Technol, Guangdong Prov Key Lab Computat Sci & Mat Design, Dept Mat Sci & Engn, Acad Adv Interdisciplinary Studies,Guangdong Hong, Shenzhen 518055, Peoples R China
2.Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, 999078, China
3.Shenzhen CAPCHEM Technology Co. Ltd, Shenzhen, 518118, China
4.Research Institute of Materials Science, South China University of Technology, Guangzhou, 510640, China
Corresponding Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Zhao, Huajun,Qian, Yunxian,Luo, Guangfu,et al. Cathode-anode reaction products interplay enabling high performance of LiNi0.8Co0.1Mn0.1O2/artificial graphite pouch batteries at elevated temperature[J]. Journal of Power Sources,2021,514.
APA Zhao, Huajun,Qian, Yunxian,Luo, Guangfu,Chang, Jian,Wang, Chaoyang,Wang, Jun,Shao, Huaiyu,&Deng, Yonghong.(2021).Cathode-anode reaction products interplay enabling high performance of LiNi0.8Co0.1Mn0.1O2/artificial graphite pouch batteries at elevated temperature.Journal of Power Sources,514.
MLA Zhao, Huajun,et al."Cathode-anode reaction products interplay enabling high performance of LiNi0.8Co0.1Mn0.1O2/artificial graphite pouch batteries at elevated temperature".Journal of Power Sources 514(2021).
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