High-stability double-layer polymer-inorganic composite electrolyte fabricated through ultraviolet curing process for solid-state lithium metal batteries

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外文摘要：Electrolyte interface resistance and low ionic conductivity are essential issues for commercializing solid-state lithium metal batteries(SSLMBs).This work details the fabrication of a double-layer solid composite electrolyte(DLSCE)for SSLMBs.The composite comprises poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP)and poly(methyl methacrylate)(PMMA)combined with 10 wt.％of Li6.4La3Zr1.4Ta0.6O12(LLZTO),synthesized through an ultraviolet curing process.The ionic conductivity of the DLSCE(2.6 ×10-4 S·cm-1)at room temperature is the high lithium-ion transference number(0.57),and the tensile strength is 17.8 MPa.When this DLSCE was assembled,the resulted LFP/DLSCE/Li battery exhibited excellent rate performance,with the discharge specific capacities of 162.4,146.9,93.6,and 64.0 mA·h·g-1 at 0.1,0.2,0.5,and 1 C,respectively.Furthermore,the DLSCE demonstrates remarkable stability with lithium metal batteries,facilitating the stable operation of a Li/Li symmetric battery for over 200 h at both 0.1 and 0.2 mA·cm-2.Notably,the formation of lithium dendrites is also effectively inhibited during cycling.This work provides a novel design strategy and preparation method for solid composite electrolytes.

外文关键词：

electrochemical reliabilitylithium metal batterylithium-ion transference numberdouble-layer solid composite electrolyte

作者：

Xinghua Liang、Pengcheng Shen、Lingxiao Lan、Yunmei Qin、Ge Yan、Meihong Huang、Xuanan Lu、Qiankun Hun、Yujiang Wang、Jixuan Wang

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作者单位：

Guangxi Key Laboratory of Automobile Components and Vehicle Technology,Guangxi University of Science & Technology,Liuzhou 545006,China

Guangxi Automobile Group Co.,Ltd.,Liuzhou 545006,China

School of Automotive Engineering,Guangdong Polytechnic of Industry and Commerce,Guangzhou 510510,China

基金：

Liuzhou Science and Technology Fund ProjectNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaGuangxi Key Laboratory of Automobile Components and Vehicle Technology Fund ProjectGuangxi Key Laboratory of Automobile Components and Vehicle Technology Fund ProjectFund Project of the Key Lab of Guangdong Science and Technology Innovation Strategy Special Fund Project in 2023

项目编号：

2023PRj010352161033222620052022GKLACVTKF022023GKLACVTZZ02pdjh2023a0819

出版年：

2024

DOI：

10.1007/s11706-024-0685-9

材料学前沿

高等教育出版社

材料学前沿

CSTPCD

影响因子：0.337

ISSN：2095-025X

年,卷(期)：2024.18(2)