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Optimization of Mesh-Based Anodes for Direct Methanol Fuel Cells

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.

Publication metadata

Author(s): Chetty R, Scott K, Kundu S, Muhler M

Publication type: Article

Publication status: Published

Journal: Journal of Fuel Cell Science and Technology

Year: 2010

Volume: 7

Issue: 3

Print publication date: 12/03/2010

ISSN (print): 1550-624X

ISSN (electronic): 1551-6989

Publisher: ASME International


DOI: 10.1115/1.3117605


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