Effect of dedoped (insulating) polyaniline nanofibers on the ionic transport and interfacial stability of poly(vinylidene fluoride-hexafluoropropylene) based composite polymer electrolyte membranes

被引：42

作者：

Deka, M. ^{[1
]}

Nath, A. K. ^{[1
]}

Kumar, A. ^{[1
]}

机构：

[1] Tezpur Univ, Dept Phys, Tezpur 784028, Assam, India

来源：

JOURNAL OF MEMBRANE SCIENCE | 2009年 / 327卷 / 1-2期

关键词：

Gel polymer electrolyte; Polyaniline nanofiber; Ionic conductivity; Phase separation; CONDUCTIVITY; FLUORIDE); PEO;

D O I：

10.1016/j.memsci.2008.11.031

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The aim of this work is to determine whether the dispersion of dedoped (insulating) polyaniline (PAni) nanofibers affect the ion transport properties of [P(VdF-HFP)] based composite polymer electrolytes. By analysis of SEM, XRD, impedance spectroscopy and FTIR results it has been demonstrated that the incorporation of dedoped PAni nanofibers up to a moderate concentration to P(VdF-HFP)-PC-DEC-LiClO4 gel polymer electrolyte system significantly enhance the ionic conductivity and interfacial stability of the electrolyte system. At higher concentration dedoped nanofibers appear to get phase separated and form insulating clusters which impede ionic transport. The pores in the polymer matrix are greatly widened by the nanofibers due to their high aspect ratio (> 50) and the ions get extra free volume for movement. Thus, up to a moderate concentration of dedoped nanofibers the P(VdF-HFP) based gel polymers can be used as electrolyte membranes for rechargeable lithium batteries. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：188 / 194

页数：7

共 40 条

[1] Crystallinity and morphology of PVdF-HFP-based gel electrolytes [J].