Halide/sulfide composite solid-state electrolyte for Li-anode based all-solid-state batteries

作     者：Haochang Zhang Zhaozhe Yu Jinyin Cheng Hannan Chen Xiao Huang Bingbing Tian Haochang Zhang;Zhaozhe Yu;Jinyin Cheng;Hannan Chen;Xiao Huang;Bingbing Tian

作者机构：International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of EducationInstitute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China Guangxi Key Laboratory of Manufacturing Systems and Advanced Manufacturing TechnologyGuilin University of Electronic TechnologyGuilin 541004China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2023年第34卷第11期

页      面：326-331页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0703[理学-化学] 

基　　金：B.Tian acknowledges the financial support from the Science and Technology Project of Shenzhen(No.JCYJ20210324094206019) X.Huang acknowledges the financial support from the National Natural Science Foundation of China(No.52102284) Z.Yu acknowledges Department of Science and Technology of Guangxi Province(Nos.AB21220027,AD19110077) Guangxi Key Laboratory of Manufacturing Systems Foundation(No.20-065-40-005Z) Engineering Research Center Foundation of Electronic Information Materials and Devices(No.EIMD-AA202005). 

主　　题：Li_(2)ZrCl_(6) Li_(6)PS_(5)Cl Composite solid-state electrolyte Interface stability Li anode 

摘      要：Li_(2)ZrCl_(6)(LZC) solid-state electrolytes(SSEs) have been recognized as a candidate halide SSEs for allsolid-state Li batteries(ASSLBs) with high energy density and safety due to its great compatibility with4V-class cathodes and low bill-of-material(BOM) cost.However,despite the benefits,the poor chemical/electrochemical stability of LZC against Li metal causes the deterioration of Li/LZC interface,which has a detrimental inhibition on Li^(+) transport in ASSLBs.Herein,we report a composite SSE combining by LZC and argyrodite buffer layer(Li_(6)PS_(5)Cl,LPSC) that prevent the unfavorable interaction between LZC and Li metal.The Li/LPSC-LZC-LPSC/Li symmetric cell stably cycles for over 1000 h at 0.3 mA/cm^(2)(0.15mAh/cm^(2)) and has a high critical current density(CCD) value of 2.1 mA/cm^(2)at 25 ℃,Under high temperature(60℃) which promotes the reaction between Li and LZC,symmetric cell fabricated with composite SSE also display stable cycling performance over 1200h at 0.3 mAh/cm^(2).Especially,the Li/NCM ASSLBs fabricated with composite SSE exhibit a high initial coulombic efficiency,as well as superior cycling and rate performance.This simple and efficient strategy will be instrumental in the development of halidebased high-performance ASSLBs.