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A new structured composite membrane for fuel cell applications

Authors :
Han, Wei
Cheung, Chun Tung
Poon, Ho Yee
Yeung, King Lun
Source :
Catalysis Today. Oct2012, Vol. 193 Issue 1, p194-199. 6p.
Publication Year :
2012

Abstract

Abstract: A new proton conducting membrane was prepared by confining sub-nanoliter volumes of perfluorosulfonic acid (PFSA) polymer within rigid pores cladded with zeolite layers. Tests showed membrane-electrode assembly (MEA) made of confined Nafion PFSA-HZSM-5/Sil-1 structured composite membrane delivered an order of magnitude higher MPD (maximum power density) compared to a standard Nafion 117 MEA in a hydrogen PEMFC at high temperature operation under dry feed conditions. Similarly, 900% higher MPD was obtained from direct methanol fuel cell (DMFC) made of the new membrane. The zeolites are believed to play an active role in the water and methanol managements through adsorption and transport, and the confinement of the PFSA within zeolite environment changes its microstructure resulting in the improved thermal stability. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
09205861
Volume :
193
Issue :
1
Database :
Academic Search Index
Journal :
Catalysis Today
Publication Type :
Academic Journal
Accession number :
79987731
Full Text :
https://doi.org/10.1016/j.cattod.2012.03.021