Influence of sol-gel media on the properties of Nafion-SiO2 hybrid electrolytes for high performance proton exchange membrane fuel cells operating at high temperature and low humidity

被引：39

作者：

Dresch, Mauro Andre ^{[1
]}

Isidoro, Roberta Alvarenga ^{[1
]}

Linardi, Marcelo ^{[1
]}

Queirura Rey, Jose Fernando ^{[2
]}

Fonseca, Fabio Coral ^{[1
]}

Santiago, Elisabete Inacio ^{[1
]}

机构：

[1] IPEN CNEN SP, Inst Pesquisas Energet & Nucl, BR-05508000 Sao Paulo, Brazil

[2] Univ Fed ABC, BR-09210170 Santo Andre, SP, Brazil

来源：

ELECTROCHIMICA ACTA | 2013年 / 94卷

基金：

巴西圣保罗研究基金会;

关键词：

Nafion-SiO2; PEM fuel cell; Hybrid electrolytes; Sol-gel synthesis; SMALL-ANGLE SCATTERING; COMPOSITE MEMBRANES; IONOMER; WATER; METHANOL; CONDUCTIVITY; MORPHOLOGY; EVOLUTION; PHASE;

D O I：

10.1016/j.electacta.2012.09.036

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The effects of alcohol used as solvent during the sol-gel synthesis of Nafion-SiO2 hybrid electrolytes have been evaluated. The alcohol controls the distribution of silica particles in the phase separated structure of Nafion and both the silica content and the water uptake of hybrid membranes are dependent on the alcohol solvent. Thermal and structural properties inferred from differential scanning calorimetry and small angle X-ray scattering were correlated with the enhanced water uptake and the proton conductivity of hybrid membranes. Accordingly, fuel cell tests carried out at 130 degrees C and low humidity evidenced the superior performance of Nafion-SiO2 hybrids. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：353 / 359

页数：7

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