Incorporation of Ionic Conductive Polymers into Sulfide Electrolyte-Based Solid-State Batteries to Enhance Electrochemical Stability and Cycle Life  

作　　者：Juhyoung Kim Woonghee Choi Seong-Ju Hwang Dong Wook Kim 

机构地区：[1]Advanced Materials Division,Korea Research Institute of Chemical Technology(KRICT),Daejeon 34114,Korea [2]Department of Material Science and Engineering,Yonsei University,Seoul 03722,Korea [3]Department of Material Science and Engineering,Seoul National University,Seoul 08826,Korea [4]Advanced Materials and Chemical Engineering,University of Science and Technology(UST),Daejeon 34113,Korea

出　　处：《Energy & Environmental Materials》2024年第6期4-12,共9页能源与环境材料（英文）

基　　金：supported by the Enhancement of Performance and Production Technology of Lithium-based Next-generation Rechargeable Battery(project number 20012371)from the Ministry of Trade,Industry and Energy(MOTIE)of Korea;supported by project number KS2322-20(A Study on the Convergence Materials for Off-Grid Energy Conversion/Storage Integrated Devices)of the Korea Research Institute of Chemical Technology(KRICT).

摘　　要：Sulfide-based inorganic solid electrolytes are promising materials for high-performance safe solid-state batteries.The high ion conductivity,mechanical characteristics,and good processability of sulfide-based inorganic solid electrolytes are desirable properties for realizing high-performance safe solid-state batteries by replacing conventional liquid electrolytes.However,the low chemical and electrochemical stability of sulfide-based inorganic solid electrolytes hinder the commercialization of sulfide-based safe solid-state batteries.Particularly,the instability of sulfide-based inorganic solid electrolytes is intensified in the cathode,comprising various materials.In this study,carbonate-based ionic conductive polymers are introduced to the cathode to protect cathode materials and suppress the reactivity of sulfide electrolytes.Several instruments,including electrochemical spectroscopy,X-ray photoelectron spectroscopy,and scanning electron microscopy,confirm the chemical and electrochemical stability of the polymer electrolytes in contact with sulfide-based inorganic solid electrolytes.Sulfide-based solid-state cells show stable electrochemical performance over 100 cycles when the ionic conductive polymers were applied to the cathode.

关 键 词：composite cathode electrochemical stability ionic conductive polymer solid-state battery sulfide solid electrolyte 

分 类 号：TM91[电气工程—电力电子与电力传动]