Synthesis and characterization of Nafion/60SiO2-30P2O5-10ZrO2 sol-gel composite membranes for PEMFCs

被引：34

作者：

Aparicio, M ^{[1
]}

Klein, LC ^{[1
]}

机构：

[1] State Univ New Jersey, Dept Mat Sci & Ceram, Piscataway, NJ 08854 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2005年 / 152卷 / 03期

关键词：

D O I：

10.1149/1.1852443

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A limitation of Nation membranes in proton-exchange membrane fuel cells (PEMFCs) is their poor water retention above 100 degrees C. The incorporation of SiO2-P2O5-ZrO2 gels into Nation membranes can improve their thermal stability. Therefore, composite membranes were prepared either by infiltration of Nation membranes with SiO2-P2O5-ZrO2 sol or by recasting a film using Nation solution and SiO2-P2O5-ZrO2 sol. The membranes were characterized by thermal analysis, microstructural analysis, functional testing in a fuel cell, and electrochemical impedance spectroscopy. The incorporation of the SiO2-P2O5-ZrO2 gel resulted in improved electrochemical behavior at 130 degrees C, with current density-cell potential values as good as those obtained at 80 degrees C with unmodified Nation membranes. (c) 2005 The Electrochemical Society. [DOI: 10. 1149/1.1852443] All rights reserved.

引用

页码：A493 / A496

页数：4

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