Mechanically Interlocked Polymer Electrolyte with Built-In Fast Molecular Shuttles for All-Solid-State Lithium Batteries

被引：51

作者：

Seo, Jiae ^{[1
]}

Lee, Gwang-Hee ^{[2
]}

Hur, Joon ^{[1
]}

Sung, Myeong-Chang ^{[2
]}

Seo, Ji-Hun ^{[1
]}

Kim, Dong-Wan ^{[2
]}

机构：

[1] Korea Univ, Dept Mat Sci & Engn, Seoul 02841, South Korea

[2] Korea Univ, Sch Civil Environm & Architectural Engn, Seoul 02841, South Korea

来源：

ADVANCED ENERGY MATERIALS | 2021年 / 11卷 / 44期

基金：

新加坡国家研究基金会;

关键词：

ASSLBs; mechanically interlocked polymers; molecular shuttles; polyrotaxane; solid polymer electrolytes; IONIC-CONDUCTIVITY; TRANSPORT;

D O I：

10.1002/aenm.202102583

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 mobility of molecular shuttles inside a mechanically interlocked polymer (MIP) can improve the ionic conductivity and electron transport capacity of a solid polymer electrolyte (SPE) and maintain a mechanically tough structure. The polyrotaxane-based MIP electrolyte with a necklace-like molecular structure exhibits high ionic conductivity (sigma = 5.93 x 10(-3) S cm(-1) at 25 degrees C and 1.44 x 10(-2) S cm(-1) at 60 degrees C), a high Li+ ion transference number (t(+) = 0.71), and high electrochemical oxidation stability (approximate to 4.7 V vs Li+/Li). When SPEs are used in Li-based batteries, a high Coulombic efficiency (>= 98.5%), an excellent rate capability, and fast charging (>= 2C) can be achieved using a "built-in molecular shuttle" design.

引用

页数：9

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