Issue 7, 2013
From the journal:

Journal of Materials Chemistry A

Modification of electrodes using Al2O3 to reduce phosphoric acid loss and increase the performance of high-temperature proton exchange membrane fuel cells†

Hyung-Suk Oh,a   Youngick Cho,a   Woong Hee Leea  and  Hansung Kim*a  

* Corresponding authors

a Department of Chemical and Biomolecular Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul, Korea
E-mail: elchem@yonsei.ac.kr
Fax: +82 2 312 6401
Tel: +82 2 2123 5753

Abstract

The addition of a small amount of Al2O3 (6 wt%) to the catalyst layer of high temperature-polymer electrolyte membrane fuel cells (HT-PEMFCs) using phosphoric acid-doped membranes was proved to be an effective way to increase durability and performance. It was confirmed from the XRD study that Al2O3 reacts with phosphoric acid diffusing from the membrane to the electrode and produces aluminum dihydrophosphate (Al(H2PO4)3), which has proton conductivity. As a result, the formation of Al(H2PO4)3 not only reduces the loss of phosphoric acid and the resistance in fuel cells but also enhances the electrochemical surface area of catalysts.

Graphical abstract: Modification of electrodes using Al2O3 to reduce phosphoric acid loss and increase the performance of high-temperature proton exchange membrane fuel cells

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Article information

DOI
https://doi.org/10.1039/C2TA00492E
Article type
Paper
Submitted
28 Sep 2012
Accepted
12 Dec 2012
First published
12 Dec 2012

J. Mater. Chem. A, 2013,1, 2578-2581

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Modification of electrodes using Al2O3 to reduce phosphoric acid loss and increase the performance of high-temperature proton exchange membrane fuel cells

H. Oh, Y. Cho, W. H. Lee and H. Kim, J. Mater. Chem. A, 2013, 1, 2578 DOI: 10.1039/C2TA00492E

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