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Lookup NU author(s): Lei Xing,
Dr Mohamed Mamlouk,
Emeritus Professor Keith Scott
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Copyright © 2013 Delta Energy and Environment. A two dimensional, across-the-channel, two-phase flow and isothermal model for a proton exchange membrane fuel cell is presented. Water transport through the membrane is described by the combined mechanism of electro-osmotic drag, back diffusion and hydraulic permeation. Water phase transfer between water vapor, dissolved and liquid water as well as the membrane swelling are included. The spherical-agglomerate structure is used for the catalyst layer, in which the membrane and liquid water partially occupy the void space and in turn form the membrane and liquid filmssurrounding the agglomerate. The effects of platinum loading, platinum mass ratio, dry membrane volume fraction and catalyst layer thickness on fuel cell performance and effectiveness are investigated by using an orthogonal design method. For the highest current density at lower cell voltages, the optimal values of platinum loading, platinum mass ratio, dry membrane volume fraction and catalyst layer thickness are 0.4 mg cm-2, 0.4, 0.3 and 20 μm, respectively.
Author(s): Xing L, Mamlouk M, Scott K
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: EFC 2013 - Proceedings of the 5th European Fuel Cell Piero Lunghi Conference
Year of Conference: 2013
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