Electrokinetic Structuring of Catalyst Layers for Polymer Electrolyte Fuel Cells
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Authors
Hoidas, Mark
Date
2011-12-12
Type
thesis
Language
eng
Keyword
fuel cells , electrokinetics
Alternative Title
Abstract
This thesis investigates the possibility of using electrokinetic effects, induced when a colloidal system is subjected to an electric field, to produce deterministic structure in the catalyst layer of polymer electrolyte membrane fuel cells. The susceptibility of the catalyst ink system to electrokinetic effects is clearly demonstrated. A novel apparatus and procedure is developed to allow for the formation of continuous films between two electrode surfaces through solvent evaporation. Characterization of the resulting layers is done through imaging and rotating disc electrode measurements. While the images show some possibility of structure formation, no clear increase in the oxygen reduction rate is observed. Recommendations for extending this work are provided.
Description
Thesis (Master, Chemical Engineering) -- Queen's University, 2010-01-06 17:29:23.27
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License
This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.