In Situ and Ex Situ Characterization of Carbon Corrosion in PEMFCs

被引：22

作者：

Fairweather, Joseph ^{[1
]}

Li, Bo ^{[1
]}

Mukundan, Rangachary ^{[1
]}

Fenton, James ^{[2
]}

Borup, Rodney ^{[1
]}

机构：

[1] Los Alamos Natl Lab, POB 1663,MS D429, Los Alamos, NM 87544 USA

[2] Florida Solar Energy Ctr, Cocoa, FL 32922 USA

来源：

POLYMER ELECTROLYTE FUEL CELLS 10, PTS 1 AND 2 | 2010年 / 33卷 / 01期

关键词：

FUEL-CELLS; DEGRADATION;

D O I：

10.1149/1.3484542

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

Carbon corrosion is an important degradation mechanism that impairs PEMFC performance through destruction of catalyst connectivity, collapse of pore structure, and loss of hydrophobic character. In this study, carbon corrosion was quantified in situ by measurement of carbon dioxide in fuel cell exhaust gases through non-dispersive infrared spectroscopy (NDIR). Performance degradation was also studied by a DOE protocol for catalyst support accelerated stress testing. Finally, changes in gas diffusion layer and microporous layer carbon surfaces were observed through an ex situ aging procedure.

引用

页码：433 / +

页数：3

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