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

被引：68

作者：

Chen, Ting ^{[1
]}

Zeng, Dewu ^{[1
]}

Zhang, Long ^{[1
]}

Yang, Meng ^{[1
]}

Song, Dawei ^{[2
]}

Yan, Xinlin ^{[3
]}

Yu, Chuang ^{[4
]}

机构：

[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Clean Nano Energy Ctr, Qinhuangdao 066004, Hebei, Peoples R China

[2] Tianjin Univ Technol, Sch Mat Sci & Engn, Tianjin Key Lab Photoelect Mat & Devices, Tianjin 300384, Peoples R China

[3] Vienna Univ Technol, Inst Solid State Phys, Wiedner Hauptstr 8-10, A-1040 Vienna, Austria

[4] Univ Western Ontario, Dept Mech & Mat Engn, 1151 Richmond St, London, ON N6A 3K7, Canada

来源：

JOURNAL OF ENERGY CHEMISTRY | 2021年 / 59卷

基金：

国家重点研发计划;

关键词：

Lithium dendrite suppression; Interface; Dual doping; Argyrodite solid electrolyte; All-solid-state lithium-metal battery; SULFIDE SOLID ELECTROLYTES; BATTERIES; STABILITY; CONDUCTIVITY; INTERFACES; TRANSPORT; LI6PS5CL; BEHAVIOR; MODULUS; CATHODE;

D O I：

10.1016/j.jechem.2020.11.031

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

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 Li6PS5I-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. (C) 2020 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.

引用

页码：530 / 537

页数：8

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