中文版 | English
Title

Effects of fluorination on crystal structure and electrochemical performance of antiperovskite solid electrolytes

Author
Corresponding AuthorRuo,Zhao; Songbai,Han; Ruqiang,Zou; Yusheng,Zhao
Joint first authorManrong,Song; Ruo,Zhao
Publication Years
2023-02-01
DOI
Source Title
ISSN
2095-4956
Volume77
Abstract

The development of all-solid-state lithium batteries (ASSLBs) depends on exploiting solid-state elec-trolytes (SSEs) with high ionic conductivity and electrochemical stability. Fluorination is generally con-sidered to be an effective strategy to improve the ionic conductivity and electrochemical stability of inorganic SSEs. Here, we report the partial fluorination of the chlorine sites in an antiperovskite, by which the orthorhombic Li2OHCl was transformed into cubic Li2OHCl0.9F0.1, resulting in a fourfold increase in ionic conductivity at 30 degrees C. The ab initio molecular dynamics simulations suggest that both the crystal symmetry and the anions electronegativity influence the diffusion of Li+ in the antiperovskite structure. Besides, from the perspective of experiments and calculations, it is confirmed that fluorination is a fea-sible method to improve the electrochemical stability of antiperovskite SSEs. The LiFePO4 | Li cell based on Li2OHCl0.9F0.1 is also assembled and exhibits stable cycle performance, which indicates that fluorina-tion of antiperovskite SSEs is an effective way to produce high-performance SSEs for practical application of ASSLBs.(c) 2022 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.

Keywords
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
Corresponding
Funding Project
National Key Research and Development Program of China[2020YFA0210701] ; National Natural Science Foundation of China[
WOS Research Area
Chemistry ; Energy & Fuels ; Engineering
WOS Subject
Chemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical
WOS Accession No
WOS:000917903200001
Publisher
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:3
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/415485
DepartmentAcademy for Advanced Interdisciplinary Studies
Affiliation
1.School of Materials Science and Engineering, Peking University, Beijing 100871, China
2.Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology, Shenzhen 518055, P. R. China
3.Institute for Advanced Study, Shenzhen University, Shenzhen 518055, Guangdong, China
First Author AffilicationAcademy for Advanced Interdisciplinary Studies
Corresponding Author AffilicationAcademy for Advanced Interdisciplinary Studies
Recommended Citation
GB/T 7714
Lei,Gao,Manrong,Song,Ruo,Zhao,et al. Effects of fluorination on crystal structure and electrochemical performance of antiperovskite solid electrolytes[J]. Journal of Energy Chemistry,2023,77.
APA
Lei,Gao.,Manrong,Song.,Ruo,Zhao.,Songbai,Han.,Jinlong,Zhu.,...&Yusheng,Zhao.(2023).Effects of fluorination on crystal structure and electrochemical performance of antiperovskite solid electrolytes.Journal of Energy Chemistry,77.
MLA
Lei,Gao,et al."Effects of fluorination on crystal structure and electrochemical performance of antiperovskite solid electrolytes".Journal of Energy Chemistry 77(2023).
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