Kmiotek, Stephen J.
Proton exchange membrane fuel cells are a potential source of energy for commercial use, but efficiency is insufficient for feasible implementation. Research has been focused on improving the cell’s individual components, and this report focuses on the permeability of the gas diffusion layer. Global, through-plane, and in-plane permeabilities were tested using nitrogen, hydrogen, and mixtures of the gases in ratios 1:1 and 2:1 (N2:H2). Two different modified cells were used to test the permeability types by manipulating gas flow direction. Darcy’s Law with the Forchheimer term was used for permeability calculations. It was found that the presence of an MPL lowers GDL permeability and has a greater impact on through-plane permeability than in-plane permeability.
Worcester Polytechnic Institute
Major Qualifying Project
All authors have granted to WPI a nonexclusive royalty-free license to distribute copies of the work, subject to other agreements. Copyright is held by the author or authors, with all rights reserved, unless otherwise noted.