In situ FTIR-diffuse reflection spectroscopy of the anode surface in a direct methanol/oxygen fuel cell

Journal Article · Wed Jan 31 23:00:00 EST 1996 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.1836443· OSTI ID:212137

Fan, Q; Pu, C; Ley, K L; Smotkin, E S ^[1]

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1. Illinois Inst. of Tech., Chicago, IL (United States). Dept. of Chemistry

In situ Fourier transform infrared-diffuse reflection spectroscopy is introduced as a method for studying the catalytic surfaces of membrane electrode assemblies in working fuel cells. An annular collection electrode and a CaF{sub 2} window are used to expose a sufficient area of the electrode to the IR beam. Experimental results for methanol oxidation, CO adsorption, and (CO{sub 2} + CO) adsorption show that this method can be used to monitor the catalyst surface in a direct methanol fuel cell under load. The IR peaks associated with CO adsorption on high surface area Pt-Ru are similar to previously observed peaks on smooth electrodes reported in the literature.

• Sponsoring Organization: USDOE
• OSTI ID: 212137
• Journal Information: Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 2 Vol. 143; ISSN 0013-4651; ISSN JESOAN
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
ADSORPTION
ALCOHOL FUEL CELLS
CARBON DIOXIDE
CARBON MONOXIDE
CATALYTIC EFFECTS
ELECTROCATALYSTS
INFRARED RADIATION
METHANOL
OXIDATION
PERFORMANCE
PLATINUM
POISONING
RUTHENIUM
SOLID ELECTROLYTE FUEL CELLS
SPECTROSCOPY
SURFACE PROPERTIES