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2008 | OriginalPaper | Chapter

Catalyst Layer/MEA Performance Evaluation

Authors : Jianlu Zhang, Jiujun Zhang

Published in: PEM Fuel Cell Electrocatalysts and Catalyst Layers

Publisher: Springer London

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The membrane electrode assembly (MEA) is a key unit of proton exchange membrane (PEM) fuel cells, including direct methanol fuel cells (DMFCs). In general, the MEA is composed of an anode gas diffusion layer (GDL), an anode catalyst layer, a membrane (the PEM), a cathode catalyst layer, and a cathode gas diffusion layer. The MEA materials, structures, components and fabrication technologies have strong effects on the corresponding fuel cell performance. In particular, the catalyst layers, where the electrochemical reactions take place, are the most important components. Theoretically, in an ideal catalyst layer all catalyst particle sites would be accessible to the reactant gas (H

2

or O

2

), protons, and electrons. In order to achieve this, the distributions of the electron conductor, proton conductor, catalyst sites, and gas pores should be uniform in a catalyst layer.

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Metadata
Title
Catalyst Layer/MEA Performance Evaluation
Authors
Jianlu Zhang
Jiujun Zhang
Copyright Year
2008
Publisher
Springer London
DOI
https://doi.org/10.1007/978-1-84800-936-3_21