Constructing lithiophilic sites-rich artificial solid electrolyte interphase to enable dendrite-free and corrosion-free lithium-sulfur batteries

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外文摘要：An artificial solid electrolyte interphase(SEI)with lithiophilic sites and chemical bonds anchoring lithium polysulfides(LiPSs)has been developed as a potential solution to protect the lithium(Li)metal anode of Lithium-sulfur(Li-S)batteries.This strategy aims to guide consistent Li deposition and relieve lithium corrosion.Herein,the evolution process of lithiophilic sites based on aluminum fluoride(A1F3)in an artificial SEI is disclosed in Li-S batteries with metal-based lithiophilic sites.The polyester polymer(PMMA and PPC)/A1F3 artificial SEI(MPAF-SEI)was homogeneously anchored on Li anode by in-situ polymerization.The conversion of A1F3 into Li-Al and LiF lithiophilic sites effectively reduce the Li nucleation overpotential and prevents the formation of Li dendrites.At the same time,the polymer can anchor LiPSs by chemical bonds and prevents Li corrosion.The optimized MPAF-SEI protected Li demonstrates excellent stability for over 3000 h at a capacity of 1 mAh cm-2 in Li||Li symmetric cells.The Li-S battery with low N/P(4)exhibits a capacity of 532.6 mAh g-1 over 300 cycles lifespan at 0.5 C.

外文关键词：

Li anodeSEILithiophilic sitesLi-S batteryAlF3

作者：

Wei Lu、Anshun Zhao、Qiuxu Chen、Sihan Liu、Mingxi Yu、Zihao Wang、Ze Gao、Xue Zhao、Guiru Sun、Ming Feng

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作者单位：

Key Laboratory of Functional Materials Physics and Chemistry Ministry of Education,Jilin Normal University,Changchun,Jilin,130103,China

College of Information Technology,Jilin Engineering Research Center of Optoelectronic Materials and Devices,Jilin Normal University,Siping,Jilin,136000,China

School of Science,Changchun University of Science and Technology,Changchun,Jilin,130022,China

出版年：

2024

DOI：

10.1016/j.gee.2024.05.008

绿色能源与环境(英文)

CSTPCD

ISSN：

年,卷(期)：2024.9(12)