In situ and ex situ characterization of carbon corrosion in PEMFCs

Conference · Fri Jan 01 00:00:00 EST 2010

DOI:https://doi.org/10.1149/MA2010-02/10/901· OSTI ID:1023425

Fairweather, Joseph D ^[1]; Bo, Li ^[1]; Mukundan, Rangachary ^[1]; Borup, Rodney L ^[1]; Fenton, James ^[2]

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1. Los Alamos National Laboratory
2. FLORIDA SOLAR ENERGY CENTER

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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1023425
• Report Number(s): LA-UR-10-04627; LA-UR-10-4627; TRN: US201118%%1015
• Resource Relation: Journal Volume: MA2010-02; Journal Issue: 10; Conference: 218th Electrochemical Society Meeting ; October 11, 2010 ; Las Vegas, NV
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
AGING
CARBON
CARBON DIOXIDE
CATALYST SUPPORTS
CATALYSTS
CORROSION
DIFFUSION
EXHAUST GASES
FUEL CELLS
PERFORMANCE
PORE STRUCTURE
SPECTROSCOPY
TESTING