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Engineering an Insoluble Cathode Electrolyte Interphase Enabling High Performance NCM811//Graphite Pouch Cell at 60 °C
Chen, Yuqing1; He, Qiu2; Mo, Ying1; Zhou, Wang1; Zhao, Yun3; Piao, Nan4; Liu, Chi5; Xiao, Peitao6; Liu, Hui5; Li, Baohua3; Chen, Shi7; Wang, Li8; He, Xiangming8; Xing, Lidan9; Liu, Jilei1
Source PublicationAdvanced Energy Materials

High-energy lithium-ion batteries (LIBs) can be realized with the use of nickel-rich materials, however, their reversible operation requires long-term cathode-electrolyte interfacial (CEI) stability, especially for high-temperature applications, but how the CEIs evolves during operation is still a mystery. The unstable CEIs have been recently ascribed to them generating/disappearing/regenerating during Li extraction/insertion by in situ Fourier Transform Infrared Spectroscopy spectrum. Herein, a strategy of insoluble CEI is proposed toward addressing the interfacially induced deterioration of cathodes with a focus on Ni-rich layered oxides. Incorporating unsaturated units (C-C/C-C) to siloxane as electrolyte additives advances the commercial LiNiCoMnO/graphite cells up to around 300 cycles at 60 °C with more than 85% capacity retention, along with the LiCoO cells reaching ≈90% capacity retention over 350 cycles under 80 °C. The experimentally and theoretically detailed investigation shows that the higher unsaturation bond with high reactive sites show more polymerization via a 3D topological pathway to form insoluble CEI species, leading to suppression of parasitic reactions, corrosive acid, transition-metal dissolution, stress corrosive cracking, and impedance growth. The scientific discoveries of this study highlight the pivotal role of electrode–electrolyte interactions and recapitulates the tried-and-true “electrolyte” approach for the future development of high-energy batteries under extreme temperature conditions.

KeywordCathode Electrolyte Interphases Dynamic Evolution Electrolyte Additives High Temperatures In Situ Ftir Unsaturation
URLView the original
Indexed BySCIE
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000830232800001
Scopus ID2-s2.0-85134518559
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Cited Times [WOS]:3   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
Affiliation1.College of Materials Science and Engineering, Hunan Joint International Laboratory of Advanced Materials and Technology of Clean Energy, Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology, Hunan University, Changsha, China
2.State Key Laboratory of Silicate Materials for Architectures, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, China
3.Shenzhen Key Laboratory on Power Battery Safety and Shenzhen Geim Graphene Center, Tsinghua Shenzhen International Graduate School (SIGS), Shenzhen, 518055, China
4.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 72 Wenhua Road, 110016, China
5.School of Chemistry and Material Science, Hunan Agricultural University, Changsha, 410128, China
6.College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, 410073, China
7.Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, 999078, Macao
8.Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China
9.Engineering Research Center of MTEES (Ministry of Education), Research Center of BMET (Guangdong Province), Engineering Lab. of OFMHEB (Guangdong Province), Key Lab. of ETESPG (GHEI), And Innovative Platform for ITBMD (Guangzhou Municipality), School of Chemistry, South China Normal University, Guangzhou, 510006, China
Recommended Citation
GB/T 7714
Chen, Yuqing,He, Qiu,Mo, Ying,et al. Engineering an Insoluble Cathode Electrolyte Interphase Enabling High Performance NCM811//Graphite Pouch Cell at 60 °C[J]. Advanced Energy Materials,2022,12(33).
APA Chen, Yuqing,He, Qiu,Mo, Ying,Zhou, Wang,Zhao, Yun,Piao, Nan,Liu, Chi,Xiao, Peitao,Liu, Hui,Li, Baohua,Chen, Shi,Wang, Li,He, Xiangming,Xing, Lidan,&Liu, Jilei.(2022).Engineering an Insoluble Cathode Electrolyte Interphase Enabling High Performance NCM811//Graphite Pouch Cell at 60 °C.Advanced Energy Materials,12(33).
MLA Chen, Yuqing,et al."Engineering an Insoluble Cathode Electrolyte Interphase Enabling High Performance NCM811//Graphite Pouch Cell at 60 °C".Advanced Energy Materials 12.33(2022).
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