An efficient decal transfer method using a roll-press to fabricate membrane electrode assemblies for direct methanol fuel cells

Title
An efficient decal transfer method using a roll-press to fabricate membrane electrode assemblies for direct methanol fuel cells
Authors
아사드메흐무드하흥용
Keywords
Direct methanol fuel cell; Membrane electrode assembly (MEA); Decal method; Roll-press; Catalyst layer; Catalyst transfer rate
Issue Date
2012-12
Publisher
International journal of hydrogen energy
Citation
VOL 37, NO 23, 18463-18470
Abstract
This study has focused on the development of a roll-press based decal transfer method to fabricate membrane electrode assemblies (MEAs) for direct methanol fuel cells (DMFCs). This method exhibits an outstanding transfer rate of catalyst layers from substrates to the membrane, despite hot-pressing at a considerably lower pressure and for a much shorter duration than the flat-press based conventional decal method. The MEA produced by a rollpress (R-MEA) delivers an excellent single-cell performance with power densities more than 30% higher than that fabricated using a flat-press (F-MEA). The new method considerably improves catalyst active sites in both electrodes and renders a high cathode porosity. The superior pore structure of the cathode makes the R-MEA more efficient in terms of performance and operation stability under lower air stoichiometries. Moreover, MEAs can be prepared in a continuous mode using this new method due to the unique design of the roll-press. All these advantages demonstrate the superiority of this method over the conventional flat-press decal method and make it suitable for use in the commercial manufacturing of MEAs for direct methanol fuel cells.
URI
http://pubs.kist.re.kr/handle/201004/44317
ISSN
03603199
Appears in Collections:
KIST Publication > Article
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