气候变化领域集成服务门户(CCPortal): Polar polymer-solvent interaction derived favorable interphase for stable lithium metal batteries

CCPortal

DOI	10.1039/c9ee02558h
	Polar polymer-solvent interaction derived favorable interphase for stable lithium metal batteries
	Bae J.; Qian Y.; Li Y.; Zhou X.; Goodenough J.B.; Yu G.
发表日期	2019
ISSN	17545692
起始页码	3319
结束页码	3327
卷号	12 期号:11
英文摘要	Lithium metal has long been regarded as one of the most promising anode materials for future rechargeable batteries. However, the severe reaction of Li with carbonate electrolytes and the rapid growth of Li-dendrites at high current densities hinder its practical application in Li-metal batteries. Here we report a polar polymer protective layer to suppress highly corrosive cyclic carbonates by tuning polymer-solvent interactions. The CN groups of polyacrylonitrile (PAN) polymer chains in the polar polymer network can effectively reduce high reactivity of the CO groups of carbonate solvents leading to a stable solid electrolyte interphase (SEI) layer with higher inorganic components. In situ optical and electron microscopes demonstrate that the polar polymer network effectively restrained the formation and growth of Li-dendrites, which helps to stabilize the plating/stripping behavior of Li in a symmetric Li Li cell and a Li LiNi1/3Co1/3Mn1/3O2 cell. This study provides a useful perspective of controlling electrolyte coordination to form a stable SEI layer in carbonate electrolytes for Li-metal batteries. This journal is © The Royal Society of Chemistry.
英文关键词	Anodes; Carbonation; Corrosion protection; Lithium batteries; Metals; Molecular interactions; Polymers; Solid electrolytes; Solvents; Carbonate electrolytes; Carbonate solvents; High current densities; Inorganic components; Polyacrylonitrile (PAN); Polymer-solvent interactions; Protective layers; Solid electrolyte interphase layer (SEI); Lithium compounds; electrode; electrolyte; equipment; exopolymer; lithium; polymer; solvent
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/189783
作者单位	Materials Science and Engineering Program and Department of Mechanical Engineering, University of Texas at Austin, Austin, TX 78712, United States
推荐引用方式 GB/T 7714	Bae J.,Qian Y.,Li Y.,et al. Polar polymer-solvent interaction derived favorable interphase for stable lithium metal batteries[J],2019,12(11).
APA	Bae J.,Qian Y.,Li Y.,Zhou X.,Goodenough J.B.,&Yu G..(2019).Polar polymer-solvent interaction derived favorable interphase for stable lithium metal batteries.Energy & Environmental Science,12(11).
MLA	Bae J.,et al."Polar polymer-solvent interaction derived favorable interphase for stable lithium metal batteries".Energy & Environmental Science 12.11(2019).