Investigation of ionic conduction and mechanical properties of PMMA-PVdF blend-based polymer electrolytes

被引：91

作者：

Nicotera, I ^{[1
]}

Coppola, L

Oliviero, C

Castriota, M

Cazzanelli, E

机构：

[1] Univ Calabria, Dept Chem, I-87036 Cosenza, Italy

[2] Univ Calabria, Dept Phys, LICRYL INFM, Liquid Crystal Reg Ctr, I-87036 Arcavacata Di Rende, CS, Italy

来源：

SOLID STATE IONICS | 2006年 / 177卷 / 5-6期

关键词：

polymer blend electrolyte; ionic conductivity; Raman spectroscopy; rheology; NMR self-diffusion coefficients; SEM;

D O I：

10.1016/j.ssi.2005.12.028

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：

Polymeric gel electrolytes, based on a blend of poly(methylmethacrylate)/poly(vinylidene fluoride) (PMMA/PVdF), ethylene carbonate/propylene carbonate (EC/PC) as plasticizer and lithium Perchlorate as electrolyte, have been studied as a function of the different polymeric ratios to obtain the best compromise between ionic conduction and mechanical properties of the systems involved. Ionic conductivity and the lithium self-diffusion coefficient were measured by the PFG-NMR method, which revealed a maximum of lithium mobility for the composition PMMA 60%-PVdF 40%. The Raman spectroscopic study revealed a change of the interaction between that of the lithium cations and the plasticizer molecules for different PMMA/PVdF ratios. Oscillatory rheological tests have shown better mechanical properties for the intermediate compositions of the blend. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：581 / 588

页数：8

共 41 条

[1] Polyacrylonitrile electrolyte-based Li ion batteries [J].