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Effects of Ru/C Catalyst on the CO Tolerance of Anode and Durability of Membrane in PEMFC  

Sim, Woo-jong (Department of Chemical Engineering, Sunchon National University)
Kim, Dong-whan (Department of Chemical Engineering, Sunchon National University)
Choi, Seo-hee (Department of Chemical Engineering, Sunchon National University)
Kim, Ki-joong (Department of Chemical Engineering, Sunchon National University)
Ahn, Ho-Geun (Department of Chemical Engineering, Sunchon National University)
Jung, Min-chul (Department of Chemical Engineering, Sunchon National University)
Park, Kwonpil (Department of Chemical Engineering, Sunchon National University)
Publication Information
Korean Chemical Engineering Research / v.46, no.2, 2008 , pp. 286-290 More about this Journal
Abstract
Small amounts of CO in reformate fuel gas effectively block platinum catalysts by strong adsorption on the platinum surface at the operation temperature of $60{\sim}80^{\circ}C$ in PEMFC. To oxidate CO, Ru/C layer (CO filter) was placed between Pt/C layer and GDL (gas diffusion layer) in this study. Ru/C filter provided good CO-tolerant PEMFC anode, but decreased the performance of unit cell about 10% at 0.6 V due to mass transfer resistance from Ru/C filter thickness and increase of charge transfer resistance. Membrane degradation is one of the most important factors limiting the life-time of PEMFCs. Membrane durability would be dependent on the electrode catalyst type. It seemed that Ru catalyst layer would shorten the life time of PEMFC as enhanced the fluoride emission rate of membrane in acceleration test.
Keywords
PEMFC; CO Tolerance; Ru/C Catalyst; Durability; Membrane;
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