气候变化领域集成服务门户(CCPortal): Oxygen solubility and transport in Li-air battery electrolytes: Establishing criteria and strategies for electrolyte design

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DOI	10.1039/c6ee02915a
	Oxygen solubility and transport in Li-air battery electrolytes: Establishing criteria and strategies for electrolyte design
	Gittleson F.S.; Jones R.E.; Ward D.K.; Foster M.E.
发表日期	2017
ISSN	17545692
起始页码	1167
结束页码	1179
卷号	10 期号:5
英文摘要	Li-air or Li-oxygen batteries promise significantly higher energies than existing commercial battery technologies, yet their development has been hindered by a lack of suitable electrolytes. In this article, we evaluate the physical properties of varied electrolyte compositions to form generalized criteria for electrolyte design. We show that oxygen transport through non-aqueous electrolytes has a critical impact on the discharge rate and capacity of Li-air batteries. Through experiments and molecular dynamics simulations, we highlight that the choice of salt species and concentration have an outsized influence on oxygen solubility, while solvent choice is the major influence on oxygen diffusivity. The stability of superoxide reaction intermediates, key to the oxygen reduction mechanism, is also affected by variations in salt concentration and the choice of solvent. The importance of reactant transport is confirmed through Li-air cell discharge, which demonstrates good agreement between the observed and calculated mass transport-limited currents. These results showcase the impact of electrolyte composition on transport in metal-air batteries and provide guiding principles and simulation-based tools for future electrolyte design. © 2017 The Royal Society of Chemistry.
英文关键词	Electric batteries; Electrolytic reduction; Lithium; Lithium batteries; Molecular dynamics; Molecular oxygen; Oxygen; Reaction intermediates; Reaction kinetics; Solubility; Battery technology; Electrolyte compositions; Guiding principles; Molecular dynamics simulations; Non-aqueous electrolytes; Oxygen diffusivity; Reactant transport; Salt concentration; Electrolytes; concentration (composition); design method; electrolyte; equipment; experimental design; lithium; oxygen; reduction; salt; solubility; solvent; technological development
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/190561
作者单位	Sandia National Laboratories, Livermore, CA 94550, United States
推荐引用方式 GB/T 7714	Gittleson F.S.,Jones R.E.,Ward D.K.,et al. Oxygen solubility and transport in Li-air battery electrolytes: Establishing criteria and strategies for electrolyte design[J],2017,10(5).
APA	Gittleson F.S.,Jones R.E.,Ward D.K.,&Foster M.E..(2017).Oxygen solubility and transport in Li-air battery electrolytes: Establishing criteria and strategies for electrolyte design.Energy & Environmental Science,10(5).
MLA	Gittleson F.S.,et al."Oxygen solubility and transport in Li-air battery electrolytes: Establishing criteria and strategies for electrolyte design".Energy & Environmental Science 10.5(2017).