气候变化领域集成服务门户(CCPortal): The role of the hydrogen evolution reaction in the solid-electrolyte interphase formation mechanism for ": Water-in-Salt " electrolytes

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DOI	10.1039/c8ee02456a
	The role of the hydrogen evolution reaction in the solid-electrolyte interphase formation mechanism for ": Water-in-Salt " electrolytes
	Dubouis N.; Lemaire P.; Mirvaux B.; Salager E.; Deschamps M.; Grimaud A.
发表日期	2018
ISSN	17545692
起始页码	3491
结束页码	3499
卷号	11 期号:12
英文摘要	Aqueous Li-ion batteries have long been envisioned as safe and green energy storage technology, but have never been commercially realized owing to the limited electrochemical stability window of water, which drastically hampers their energy density. Recently, Water-in-Salt electrolytes (WiSEs) in which a large amount of organic salt is dissolved into water were proposed to allow for assembling 3 V Li-ion batteries. Hereby, our attention focused on the fate of water at the electrochemical interface under negative polarization and the potential reactivity of TFSI anions with products originating from the water reduction. Hence, combining analysis of bulk electrolytes with electrochemical measurements on model electrodes and operando characterization, we were able to demonstrate that hydroxides generated during the hydrogen evolution reaction can chemically react with TFSI and catalyze the formation of a fluorinated solid-electrolyte interphase (SEI) that prevents further water reduction. Mastering this new SEI formation path with the chemical degradation of TFSI anions mediated by the electrochemical reduction of water can therefore open new avenues for the future development of not only WiSEs but also Li batteries functioning in organic electrolytes. © 2018 The Royal Society of Chemistry.
英文关键词	Electrolytic reduction; Hydrogen; Ions; Lithium-ion batteries; Phase interfaces; Chemical degradation; Electrochemical interface; Electrochemical measurements; Electrochemical reductions; Electrochemical stabilities; Hydrogen evolution reactions; Negative polarization; Solid electrolyte interphase; Solid electrolytes; aqueous solution; catalysis; chemical reaction; electrochemical method; electrolyte; energy storage; formation mechanism; hydrogen; reduction; salt
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190062
作者单位	Chimie du Solide et de l'Energie, Collège de France, UMR 8260, Paris Cedex 05, 75231, France; Réseau sur le Stockage Electrochimique de l'Energie (RS2E), CNRS FR3459, 33 rue Saint Leu, Amiens Cedex, 80039, France; Sorbonne Université, Paris, France; CNRS, CEMHTI UPR3079, Université d'Orléans, 1D avenue de la recherche scientifique, Orléans Cedex 2, 45071, France
推荐引用方式 GB/T 7714	Dubouis N.,Lemaire P.,Mirvaux B.,et al. The role of the hydrogen evolution reaction in the solid-electrolyte interphase formation mechanism for ": Water-in-Salt " electrolytes[J],2018,11(12).
APA	Dubouis N.,Lemaire P.,Mirvaux B.,Salager E.,Deschamps M.,&Grimaud A..(2018).The role of the hydrogen evolution reaction in the solid-electrolyte interphase formation mechanism for ": Water-in-Salt " electrolytes.Energy & Environmental Science,11(12).
MLA	Dubouis N.,et al."The role of the hydrogen evolution reaction in the solid-electrolyte interphase formation mechanism for ": Water-in-Salt " electrolytes".Energy & Environmental Science 11.12(2018).