Sn-O dual-doped Li-argyrodite electrolytes with enhanced electrochemical performance  

作　　者：Ting Chen Dewu Zeng Long Zhang Meng Yang Dawei Song Xinlin Yan Chuang Yu 

机构地区：[1]Clean Nano Energy Center,State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,China [2]Tianjin Key Laboratory for Photoelectric Materials and Devices,School of Materials Science and Engineering,Tianjin University of Technology,300384 Tianjin,China [3]Institute of Solid State Physics,Vienna University of Technology,Wiedner Hauptstr.8-10,1040 Vienna,Austria [4]Department of Mechanical and Materials Engineering,University of Western Ontario,1151 Richmond St,N6A 3K7 London,Canada

出　　处：《Journal of Energy Chemistry》2021年第8期530-537,I0011,共9页能源化学（英文版）

基　　金：supported by the National Key R&D Program of China(No.2018YFB0104300);the Natural Science Foundation of Hebei Province(No.E2018203301)。

摘　　要：As a type of candidate for all-solid-state Li batteries,argyrodite solid electrolytes possess high ionic conductivity,but poor compatibility against Li metal.Here,we report novel Li_(6) PS_(5) I-based argyrodite sulfides with Sn-O dual doping,which is a powerful solution to comprehensively improve the performance of a material.The combination of O and Sn-aliovalent doping not only enables an improved ionic conductivity but more importantly realizes an intensively enhanced interfacial compatibility between argyrodite and Li metal and Li dendrite suppression capability.The assembled battery with Sn-O dual-doped electrolyte and Li anode demonstrates high capacity and decent cycling stability.Dual doping is thus believed to be an effective way to develop high performance sulfide solid electrolytes.

关 键 词：Lithium dendrite suppression Interface Dual doping Argyrodite solid electrolyte All-solid-state lithium-metal battery 

分 类 号：TB34[一般工业技术—材料科学与工程] TM912[电气工程—电力电子与电力传动]