A composite PEO electrolyte with amide-based polymer matrix for suppressing lithium dendrite growth in all-solid-state lithium battery

作     者：Menghan Ge Xiaoyu Zhou Yinping Qin Yang Liu Jingjing Zhou Xiaolei Wang Bingkun Guo Menghan Ge;Xiaoyu Zhou;Yinping Qin;Yang Liu;Jingjing Zhou;Xiaolei Wang;Bingkun Guo

作者机构：Materials Genome InstituteShanghai UniversityShanghai 200444China Department of Chemical and Materials EngineeringUniversity of AlbertaEdmontonAlberta T6G 2R3Canada 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2022年第33卷第8期

页      面：3894-3898页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(No.22075172) Science and Technology Commission of Shanghai Municipality(No.18010500300) Ningbo Natural Science Foundation(No.2019A610015)。 

主　　题：Composite Amide Lithium dendrite Solid state electrolyte Li metal battery 

摘      要：The lithium dendrite growth is still a serious challenge and impeding the realistic applications of all-solid-state lithium batteries.In view of the amide containing sediment layer can be stable on lithium/cathodes,a composite polymer electrolyte with amide-based matrix is in-situ built on porous electrodes.With the introduction of amide,the polymer electrolyte presents excellent ability to inhibit lithium dendrite growth and makes the Li/Li symmetric battery stably work for 500 h with a good ionic conductivity of 4.25×10^(-5)S/cm at 40℃.The solid electrolyte also shows a wide electrochemical stable window and good interface contact with the porous cathode.Utilizing this composite polymer electrolyte,the all-solid-state Li/LiFePO_(4) battery shows an initial discharge capacity of 146.5 mA h/g at 0.1 C under 40℃ and remains 81.4%in 100 cycles.The polymer electrolyte also can present better properties after modification.These results demonstrate that the presented PA-based composite polymer electrolyte could be served as a good electrolyte candidate for all-solid-state lithium-ion batteries.