An Interfacial Mechanism of Chelate-Borate Electrolyte Additives in Ni-Rich LiNi0.8Mn0.1Co0.1O2 Cathodes

doi:10.1021/acsaem.1c02331

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	An Interfacial Mechanism of Chelate-Borate Electrolyte Additives in Ni-Rich LiNi0.8Mn0.1Co0.1O2 Cathodes
	Wen, Shuxiang 1,3; Han, Yamin 1; Wang, Peng 1; Zhao, Dongni 1,3; Cui, Xuchun 1,3; Zhang, Lijuan 2; Li, Shiyou 1,3
刊名	ACS APPLIED ENERGY MATERIALS
	2021-11-22
卷号	4 期号:11 页码:12525-12534
关键词	electrolyte additives LiNi0 8Mn0 1Co0 lithium bis(oxalate)borate lithium difluoro(oxalato)borate CEI film
ISSN号	2574-0962
DOI	10.1021/acsaem.1c02331
英文摘要	The Ni-rich LiNi0.8Mn0.1Co0.1O2 (NMC811) material is considered one of the most potential cathode materials because of its high capacity, high voltage, and high lithium-ion (Li+) diffusion coefficient. However, the oxidation and decomposition of electrolytes at high potential lead to the failure of NMC811. Herein, lithium bis(oxalate) (LiBOB) and lithium difluoro(oxalato)borate (LiODFB) electrolyte additives are introduced to inhibit side reactions on the surface of the material. Results reveal that BxOy can be introduced into the passive cathode-electrolyte interphase (CEI) film by the oxidative decomposition of LiBOB and LiODFB additives, which not only develops the diffusion of Li+ but also helps suppress the dissolution of transition-metal (TM) ions. In addition, compared with LiBOB additives, the CEI film formed by LiODFB preferential decomposition is thin, uniform, and dense and contains more inorganic substances, which reduces the decomposition of the electrolyte, optimizes the composition of the CEI film, and reduces the resistance of Li+ transport. This finding is expected to be useful for the development of electrolyte additives with potential use for promoting the formation of good CEI film.
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000734176600003
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/154989]
专题	石油化工学院
作者单位	1.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China; 2.Qinghai Univ Nationalities, Coll Chem & Chem Engn, Xining 810007, Peoples R China 3.Gansu Key Lab Low Carbon Energy & Chem Engn, Lanzhou 730050, Peoples R China;
推荐引用方式 GB/T 7714	Wen, Shuxiang,Han, Yamin,Wang, Peng,et al. An Interfacial Mechanism of Chelate-Borate Electrolyte Additives in Ni-Rich LiNi0.8Mn0.1Co0.1O2 Cathodes[J]. ACS APPLIED ENERGY MATERIALS,2021,4(11):12525-12534.
APA	Wen, Shuxiang.,Han, Yamin.,Wang, Peng.,Zhao, Dongni.,Cui, Xuchun.,...&Li, Shiyou.(2021).An Interfacial Mechanism of Chelate-Borate Electrolyte Additives in Ni-Rich LiNi0.8Mn0.1Co0.1O2 Cathodes.ACS APPLIED ENERGY MATERIALS,4(11),12525-12534.
MLA	Wen, Shuxiang,et al."An Interfacial Mechanism of Chelate-Borate Electrolyte Additives in Ni-Rich LiNi0.8Mn0.1Co0.1O2 Cathodes".ACS APPLIED ENERGY MATERIALS 4.11(2021):12525-12534.