气候变化领域集成服务门户(CCPortal): An artificial hybrid interphase for an ultrahigh-rate and practical lithium metal anode

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DOI	10.1039/d1ee00508a
	An artificial hybrid interphase for an ultrahigh-rate and practical lithium metal anode
	Hu A.; Chen W.; Du X.; Hu Y.; Lei T.; Wang H.; Xue L.; Li Y.; Sun H.; Yan Y.; Long J.; Shu C.; Zhu J.; Li B.; Wang X.; Xiong J.
发表日期	2021
ISSN	17545692
起始页码	4115
结束页码	4124
卷号	14 期号:7
英文摘要	The solid electrolyte interphase (SEI) layer is pivotal for stable lithium (Li) metal batteries especially under a high rate. However, the mechanism of Li+ transport through the SEI has not been clearly elucidated to build robust Li anodes for practical Li metal batteries. Herein, an artificial hybrid SEI layer consisting of lithium-antimony (Li3Sb) alloy and lithium fluoride (LiF) is constructed to explore the ion diffusion behaviors within the SEI. As evidenced theoretically and experimentally, Li3Sb is identified as a superionic conductor for Li+ transport and as an interfacial stabilizer for the SEI layer while the LiF component with superior electron-blocking capability reduces the electron tunneling from the Li anode into the SEI, resulting in uniform dendrite-free Li deposition at the SEI/Li interface and stable Li plating/stripping behaviors at an ultrahigh rate of 20 mA cm-2. A practical 325.28 W h kg-1 pouch cell is well demonstrated under a high sulfur loading of 6 mg cm-2 and a low electrolyte/sulfur ratio of 3 μl mg-1. This work uncovers the internal mechanism of Li+ transport within the SEI component, and provides an avenue to stabilize the Li anode under practical high-rate conditions. © The Royal Society of Chemistry.
英文关键词	Anodes; Electron tunneling; Fluorine compounds; Lithium batteries; Lithium Fluoride; Solid electrolytes; Solid-State Batteries; Electron blocking; Ion diffusion; Li deposition; Lithium metal anode; Solid electrolyte interphase layer (SEI); Sulfur loading; Super ionic conductors; Ultrahigh rates; Lithium alloys; alloy; electrode; electrolyte; electron; experimental study; fuel cell; lithium
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/190607
作者单位	State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, China; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 610054, China; College of Materials and Chemistry and Chemical Engineering, Chengdu University of Technology, Chengdu, 610059, China
推荐引用方式 GB/T 7714	Hu A.,Chen W.,Du X.,et al. An artificial hybrid interphase for an ultrahigh-rate and practical lithium metal anode[J],2021,14(7).
APA	Hu A..,Chen W..,Du X..,Hu Y..,Lei T..,...&Xiong J..(2021).An artificial hybrid interphase for an ultrahigh-rate and practical lithium metal anode.Energy & Environmental Science,14(7).
MLA	Hu A.,et al."An artificial hybrid interphase for an ultrahigh-rate and practical lithium metal anode".Energy & Environmental Science 14.7(2021).