An efficient decal transfer method using a roll-press to fabricate membrane electrode assemblies for direct methanol fuel cells
- An efficient decal transfer method using a roll-press to fabricate membrane electrode assemblies for direct methanol fuel cells
- 아사드메흐무드; 하흥용
- Direct methanol fuel cell; Membrane electrode assembly
(MEA); Decal method; Roll-press; Catalyst layer; Catalyst transfer rate
- Issue Date
- International journal of hydrogen energy
- VOL 37, NO 23, 18463-18470
- 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.
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