Journal
JOURNAL OF POWER SOURCES
Volume 196, Issue 1, Pages 126-132Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2010.07.017
Keywords
Sulfonation; Carbon nanofiber; Pt catalyst; Self-humidifying composite membrane; Proton exchange membrane fuel cell
Funding
- National Science Council, ROC [99-2623-E-033-001-ET]
- Chung Yuan Christian University, Taiwan [CYCU-98-CR-CH]
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In the present study, the Nafion (R)-based self-humidifying composite membrane (N-SHCM) with sulfonated carbon nanofiber-supported Pt (s-Pt/CNF) catalyst, N-s-Pt/CNF, is successfully prepared using the solution-casting method. The scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) images of N-s-Pt/CNF indicate that s-Pt/CNF is well dispersed in the Nafion (R) matrix due to the good compatibility between Nafion (R) and s-Pt/CNF. Compared with those of the non-sulfonated Pt/CNF-containing N-SHCM, N-Pt/CNF, the properties of N-s-Pt/CNF, including electronic resistivity, ion-exchange capacity (IEC), water uptake, dimensional stability, and catalytic activity, significantly increase. The maximum power density of the proton exchange membrane fuel cell (PEMFC) fabricated with N-s-Pt/CNF operated at 50 degrees C under dry H(2)/O(2) condition is about 921 mW cm(-2), which is approximately 34% higher than that with N-Pt/CNF. Crown Copyright (c) 2010 Published by Elsevier B.V. All rights reserved.
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