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The effects of ionomer content on PEM water electrolyser membrane electrode assembly performance

Lookup NU author(s): Dr Xu Wu, Emeritus Professor Keith Scott

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Abstract

In this study, the effects of Nafion ionomer content in membrane electrode assemblies (MEAs) of polymer electrolyte membrane (PEM) water electrolyser were discussed. The MEAs were prepared with a catalyst coated membrane (CCM) method. The catalysts inks with Nafion ionomer could form uniform coatings deposited on the membrane surfaces. SEM and area EDX mapping demonstrated that anode catalyst coating was uniformly distributed, with a microporous structure. The contents of Nafion ionomer were optimized to 25% for the anode and 20% for cathode. A current density of 1 A cm(-2) was achieved at terminal voltage 1.586 V at 80 degrees C in a PEMWE single cell, with Nafion 117, Pt/C as cathode, and Ru0.7Ir0.3O2 as anode. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Xu W, Scott K

Publication type: Article

Publication status: Published

Journal: International Journal of Hydrogen Energy

Year: 2010

Volume: 35

Issue: 21

Pages: 12029-12037

Print publication date: 01/11/2010

ISSN (print): 0276-7333

ISSN (electronic): 1520-6041

Publisher: Pergamon

URL: http://dx.doi.org/10.1016/j.ijhydene.2010.08.055

DOI: 10.1016/j.ijhydene.2010.08.055

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