Ex-situ tensile fatigue-creep testing: A powerful tool to simulate in-situ mechanical degradation in fuel cells

被引：40

作者：

Alavijeh, A. Sadeghi ^{[1
]}

Venkatesan, S. V. ^{[1
]}

Khorasany, R. M. H. ^{[1
]}

Kim, W. H. J. ^{[1
]}

Kjeang, E. ^{[1
]}

机构：

[1] Simon Fraser Univ, Sch Mechatron Syst Engn, Fuel Cell Res Lab FCReL, 250-13450 102 Ave, Surrey, BC V3T 0A3, Canada

来源：

JOURNAL OF POWER SOURCES | 2016年 / 312卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Fuel cell; Membrane; Catalyst coated membrane; Fatigue; Creep; Durability; CATALYST COATED MEMBRANES; DURABILITY; MITIGATION; POLYMERS;

D O I：

10.1016/j.jpowsour.2016.02.053

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：

An ex-situ tensile fatigue and creep based accelerated stress test (TFC-AST) is proposed to evaluate the mechanical stability of catalyst coated membranes (CCMs) used in fuel cells. The fatigue-creep action of the TFC test is analyzed by tensile and hygrothermal expansion measurements on partially degraded specimens supplemented by microstructural characterization using transmission electron microscopy, revealing significant decay in mechanical properties as well as morphological rearrangement due to the combined fatigue and creep loading. Through comparison with in-situ hygrothermally degraded CCMs, the TFC-AST protocol is demonstrated to be an economical alternative to the costly in-situ mechanical accelerated stress tests that can reduce the test duration by more than 99%. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：123 / 127

页数：5

共 22 条

[1] Use of mechanical tests to predict durability of polymer fuel cell membranes under humidity cycling [J].