Poly(ethylene oxide-co-epichlorohydrin)/NaI:: a promising polymer electrolyte for photoelectrochemical cells

被引：51

作者：

Nogueira, AF ^{[1
]}

Spinacé, MAS ^{[1
]}

Gazotti, WA ^{[1
]}

Girotto, EM ^{[1
]}

de Paoli, MA ^{[1
]}

机构：

[1] Univ Estadual Campinas, Inst Quim, Lab Polimeros Condutores & Reciclagem, BR-130970 Campinas, SP, Brazil

来源：

SOLID STATE IONICS | 2001年 / 140卷 / 3-4期

基金：

巴西圣保罗研究基金会;

关键词：

ionic conductivity; polymer electrolyte; poly(ethylene oxide-co-epichlorohydrin); elastomer; NaI salt and photoelectrochemical cells;

D O I：

10.1016/S0167-2738(01)00813-X

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：

We have investigated the thermal and ionic conductivity properties of the elastomer poly(ethylene oxide-co-epichlorohydrin) filled with NaI and I-2. The reason for using this composition is its potential application as electrolyte in photoelectrochemical cells. This copolymer was characterized as a function of NaI concentration, temperature and relative humidity. According to the data obtained, the Na+ ion interacts with the ethylene oxide repeating units by means of Lewis type acid-base interactions. The empirical Vogel-Tamman-Fulcher equation was used to model the conductivity and temperature relationships, indicating that the conduction occurs in the amorphous phase of the copolymer. The sample with 9.0% (w/w) of NaI presents a conductivity of 1.5 x 10(-5) S cm(-1) in a dry atmosphere (30 degreesC, [H2O] < 1 ppm) and 2.0 X 10(-4) S cm(-1) at 86% relative humidity (22<degrees>C). (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：327 / 335

页数：9

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