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A new structured composite membrane for fuel cell applications

Authors Han, Wei View this author's profile
Cheung, Chun Tung
Poon, Ho Yee
Yeung, King Lun View this author's profile
Issue Date 2012
Source Catalysis today , v. 193, (1), October 2012, p. 194-199
Summary 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. (c) 2012 Elsevier B.V. All rights reserved.
ISSN 0920-5861
Language English
Format Article
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