共聚物
聚合
电解质
材料科学
金属
原位
原位聚合
拓扑(电路)
纳米技术
高分子化学
化学工程
电极
化学
聚合物
有机化学
电气工程
工程类
物理化学
复合材料
冶金
作者
Kairui Guo,Shaoqiao Li,Jirong Wang,Zhen Shi,Yong Wang,Zhigang Xue
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2024-02-07
卷期号:9 (3): 843-852
被引量:10
标识
DOI:10.1021/acsenergylett.3c02422
摘要
Fast-charging Li metal batteries (LMBs) with low cost, high safety, and long lifespan are highly desirable for next-generation energy storage technologies yet have been rarely achieved. Here, we report the in situ fabrication of well-designed blend, block, and bottle-brush solid-state polymer electrolytes (SPEs) integrating poly(poly(ethylene glycol) methyl ether methacrylate) (PPEGMA) and poly(trimethylene carbonate) (PTMC) matrices via Li-catalyzed orthogonal polymerization. Among them, the bottle-brush topological SPEs may display quasi-molecular-scale miscibility between PPEGMA and PTMC, maximize the synergistic coordination of Li+ with ether and carbonate units at the PPEGMA/PTMC interface, and simultaneously exhibit ideal mass transport properties and a broad electrochemical stability window. Further incorporating trifluoroethyl methacrylate (TFEMA) into the bottle-brush SPE allows facile construction of a robust solid electrolyte interphase (SEI). These, together with the fast charge transfer kinetics inherited from the in situ polymerization technique, enable the development of the first example of solid-state polymeric LMB capable of operating steadily at 3C (73% capacity retention after 1000 cycles).
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