Polymer nanocomposite ionogels, high-performance electrolyte membranes

被引：53

作者：

Gayet, Florence ^{[1
]}

Viau, Lydie ^{[1
]}

Leroux, Fabrice ^{[2
]}

Monge, Sophie ^{[1
]}

Robin, Jean-Jacques ^{[1
]}

Vioux, Andre ^{[1
]}

机构：

[1] Univ Montpellier 2, Inst Charles Gerhardt Montpellier, UMR 5253, CNRS ENSCM UM1, F-34095 Montpellier, France

[2] Univ Clermont Ferrand, UBP CNRS ENSCCF, Lab Mat Inorgan, F-63177 Aubiere, France

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2010年 / 20卷 / 42期

关键词：

IONIC LIQUIDS; LITHIUM BATTERIES;

D O I：

10.1039/c000033g

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：

A sol-gel synthesis using modified poly(methyl methacrylate) (PMMA) bearing trimethoxysilane groups and tetraethoxysilane (TEOS) allowed immobilization of very high loadings of ionic liquid [BMIm][NTf2] within nanocomposite PMMA-silica membranes. The ionic liquid (IL) provided both flexibility and ionic conductivity, while the silica nanofiller covalently bonded to the polymer chains maintained mechanical strength, as shown by a DMA and tensile test. Complex impedance spectroscopy evidenced a critical threshold in ionic conductivity around 76%, which was ascribed to an unusual transition from "polymer-in-salt" to "quasi-liquid" electrolyte behaviour. Outstanding IL loadings as high as 90 wt% were reached, resulting in the same ionic conductivity as the pure IL.

引用

页码：9456 / 9462

页数：7

共 18 条

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