气候变化领域集成服务门户(CCPortal): The Dr Jekyll and Mr Hyde of lithium sulfur batteries

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DOI	10.1039/d0ee02797a
	The Dr Jekyll and Mr Hyde of lithium sulfur batteries
	Bonnick P.; Muldoon J.
发表日期	2020
ISSN	1754-5692
起始页码	4808
结束页码	4833
卷号	13 期号:12
英文摘要	Although the concept of a lithium-sulfur (Li-S) battery promises an energy density surpassing that of conventional Li-ion cells, prototype cells have lagged far behind. As research on Li-S has progressed, four limiting challenges for the sulfur electrode have now emerged that must be addressed to facilitate their realization, including slow lithium polysulfide deposition kinetics at low electrolyte/sulfur ratios, the lithium polysulfide shuttle, the low electrical conductivity of sulfur active material, and the cracking of solid electrolytes due to the repeated expansion and contraction of sulfur active material. Notably, the challenges of both slow deposition kinetics and the lithium polysulfide shuttle only arise when using sulfur active material with the most common electrolyte solvents used in Li-S cells: liquid ethereal mixtures, such as DOL:DME. Consequently, a reckoning of ether-based electrolytes is at hand, which has shifted research focus toward solid electrolytes and alternative sulfur-based active materials; however, these alternative strategies have their own challenges. Meanwhile, dendrite growth and insufficient coulombic efficiency still plague lithium metal electrodes in both liquid and solid electrolytes at relevant current densities. Many approaches to mitigate dendrite growth have been attempted, including artificial SEIs, nucleation aids, high surface area current collectors and solid electrolytes. Despite successes, further work is needed to attain a sufficient level of performance for lithium metal to be used in commercial Li-S cells. Herein we discuss the strengths and weaknesses of many proposed solutions to these challenges with an eye toward the ever-present goal of competing with conventional Li-ion energy densities. This journal is © The Royal Society of Chemistry.
语种	英语
scopus关键词	Deposition; Electrodes; Lithium compounds; Lithium-ion batteries; Polysulfides; Solid electrolytes; Sulfur compounds; Coulombic efficiency; Current collector; Deposition kinetics; Electrical conductivity; Electrolyte solvent; Expansion and contraction; Ion energy density; Polysulfide shuttles; Lithium sulfur batteries; electric field; electrolyte; energy efficiency; energy storage; lithium; reaction kinetics; sulfur
来源期刊	Energy and Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162384
作者单位	Toyota Research Institute of North America, 1555 Woodridge Ave., Ann Arbor, MI 48105, United States
推荐引用方式 GB/T 7714	Bonnick P.,Muldoon J.. The Dr Jekyll and Mr Hyde of lithium sulfur batteries[J],2020,13(12).
APA	Bonnick P.,&Muldoon J..(2020).The Dr Jekyll and Mr Hyde of lithium sulfur batteries.Energy and Environmental Science,13(12).
MLA	Bonnick P.,et al."The Dr Jekyll and Mr Hyde of lithium sulfur batteries".Energy and Environmental Science 13.12(2020).