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Lookup NU author(s): Dr Raghuram Chetty,
Emeritus Professor Keith Scott
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Platinum based binary and ternary catalysts were prepared by thermal decomposition onto a titanium mesh and were evaluated for the anodic oxidation of methanol. The binary Pt:Ru catalyst with a composition of 1:1 gave the highest performance for methanol oxidation at 80 degrees C. The effect of temperature and time for thermal decomposition was optimized with respect to methanol oxidation, and the catalysts were characterized by cyclic voltammetry, linear sweep voltammetry, scanning electron microscopy, X-ray diffraction studies, and X-ray photoelectron spectroscopy. The best catalyst was evaluated in a single fuel cell, and the effect of methanol concentration, temperature, and oxygen/air flow was studied. The mesh-based fuel cell, operating at 80 degrees C with 1 mol dm(3) methanol, gave maximum power densities of 38 mW cm(-2) and 22 mW cm(-2) with 1 bar (gauge) oxygen and air, respectively.
Author(s): Chetty R, Scott K, Kundu S, Muhler M
Publication type: Article
Publication status: Published
Journal: Journal of Fuel Cell Science and Technology
Print publication date: 12/03/2010
ISSN (print): 1550-624X
ISSN (electronic): 1551-6989
Publisher: ASME International
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