Fluorinated molecular diamond improved polymer electrolytes enable stable cycling with high capacity of all-solid-state lithium-metal batteries

被引:0
|
作者
Zhuang, Mengbing [1 ]
Liao, Yuan [1 ]
Liang, Junshuai [1 ]
Deng, Yixiao [2 ]
Zheng, Jin-Cheng [2 ]
Yan, Hao [1 ]
Song, Tinglu [3 ]
Dai, Yang [1 ]
机构
[1] Shanghai Univ, Dept Chem Engn, Shangda Rd 99, Shanghai 200444, Peoples R China
[2] Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China
[3] Beijing Inst Technol, Expt Ctr Adv Mat, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
关键词
1-Fluoroadamantane; Poly (ethylene oxide); All-solid-state batteries; Interfacial stability; High voltage;
D O I
10.1016/j.jmat.2024.03.009
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The interfacial incompatibility of the poly (ethylene oxide)-based electrolytes hinder the longevity and further practice of all-solid-state batteries. Herein, we present a productive additive 1-Fluoroadamantane facilitating to the distinct performance of the poly (ethylene oxide)-based electrolytes. Attributed to the strong molecular interaction, the coordination of the Li+-EO is reduced and the 'bonding effect' of anion is improved. Thus, the Li+ conductivity is promoted and the electrochemical window is widened. The diamond building block C10H15- strengthens the stability of the solid polymer electrolytes. Importantly, the 1-Fluoroadamantane mediates the generation of LiF in the interfaces, which fosters the interfacial stability, contributing to the long-term cycling. Hence, the symmetric cell (Li/Li) exhibits a long-term lithium plating/stripping for over 2,400 h. The 4.3 V LiNi0.8Mn0.1Co0.1O2/Li all-solid-state battery with the 1-Fluoroadamantane-poly (ethylene oxide) improved electrolyte delivers 600 times, with an impressive capacity retention of 84%. Also, the cell presents high capacity of 210 mA center dot h/g, and 170 mA center dot h/g at 0.1 C and 0.3 C respectively, rivalling the liquid electrolytes. (c) 2024 The Authors. Published by Elsevier B.V. on behalf of The Chinese Ceramic Society.
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页数:9
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