Al-F co-doping towards enhanced electrolyte-electrodes interface properties for halide and sulfide solid electrolytes  

作　　者：Han Yan Jingming Yao Zhangran Ye Qiaoquan Lin Ziqi Zhang Shulin Li Dawei Song Zhenyu Wang Chuang Yu Long Zhang 

机构地区：[1]College of Physics and Energy,Fujian Normal University,Fuzhou 350117,China [2]Clean Nano Energy Center,State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,China [3]Tianjin Key Laboratory for Photoelectric Materials and Devices,School of Materials Science and Engineering,Tianjin University of Technology,Tianjin 300384,China [4]Guilin Electrical Equipment Scientific Research Institute Co.,Ltd.,Guilin 541004,China [5]State Key Laboratory of Advanced Electromagnetic Engineering and Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430000,China

出　　处：《Chinese Chemical Letters》2025年第1期610-617,共8页中国化学快报(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.52172243,52371215)。

摘　　要：All-solid-state Li batteries(ASSLBs)using solid electrolytes(SEs)have gained significant attention in recent years considering the safety issue and their high energy density.Despite these advantages,the commercialization of ASSLBs still faces challenges regarding the electrolyte/electrodes interfaces and growth of Li dendrites.Elemental doping is an effective and direct method to enhance the performance of SEs.Here,we report an Al-F co-doping strategy to improve the overall properties including ion conductivity,high voltage stability,and cathode and anode compatibility.Particularly,the Al-F co-doping enables the formation of a thin Li-Al alloy layer and fluoride interphases,thereby constructing a relatively stable interface and promoting uniform Li deposition.The similar merits of Al-F co-doping are also revealed in the Li-argyrodite series.ASSLBs assembled with these optimized electrolytes gain good electrochemical performance,demonstrating the universality of Al-F co-doping towards advanced SEs.

关 键 词：Solid electrolytes Li halides Li_(2)ZrCl_(6) Li argyrodites Fluorine doping 

分 类 号：TG1[金属学及工艺—金属学]