离子电导率
乙二醇
PEG比率
材料科学
电解质
聚合物
化学工程
高分子化学
离子键合
异氰酸酯
结晶
电导率
离子
化学
有机化学
复合材料
物理化学
电极
经济
工程类
聚氨酯
财务
作者
Ying-Cheng Lin,Kohzo Ito,Hideaki Yokoyama
出处
期刊:Polymer
[Elsevier]
日期:2017-12-27
卷期号:136: 121-127
被引量:30
标识
DOI:10.1016/j.polymer.2017.12.046
摘要
In this work, we introduce a new “mobile crosslink” concept for the fabrication of solid polymer electrolytes (SPEs) through the crosslinking of α-cyclodextrins (α-CDs) in a poly(ethylene glycol)-based (PEG-based) polyrotaxane. The PEG axis facilitates the conduction of lithium ions, while the crosslinked CDs that are not chemically bound to the PEG form mobile crosslinks that suppress the crystallization of PEG, maintaining its segmental mobility even after crosslinking. To weaken the strong hydrogen bonds between the abundant hydroxyl groups on the CDs, which restrict the segmental motion of PEG resulting in lower ionic conductivity, an appropriate amount of propyl isocyanate is added to effectively enhance the ionic conductivity and robustness of the SPE.
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