Comparative study of three different catalyst coating methods for direct methanol fuel cells
- Comparative study of three different catalyst coating methods for direct methanol fuel cells
- 최형주; 김진수; 권영채; 한종희
- Catalyst; DMFC; Dual-mode spray; Air-spray; Direct methanol fuel cell; Electro-spray
- Issue Date
- Journal of power sources
- VOL 195, NO 1, 160-164
- The performance of direct methanol fuel cells (DMFCs) with membrane–electrode assemblies (MEAs)
made separately by three different catalyst coating methods, namely, air-spray, electro-spray and dualmode
spray, is evaluated. Platinum–ruthenium (PtRu) is incorporated as a catalyst for the anode. Several
techniques (XRD, FE-SEM, and TEM) are used to examine whether the coating method affects the morphological
features of the PtRu catalyst, whereas cyclic voltammetry is used to evaluate the active surface
area. The cell polarization curves attained for the three coating methods that use different methanol concentrations
are compared to determine the best method. It is found that the PtRu catalyst coated by the
dual-mode spray shows the most uniform nanoparticle distribution and the highest active surface area.
The DMFC performance is best when the dual-mode spray is employed (165 mW cm−2 at 2 M methanol).
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