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Numerical Investigations of the Combined Effects of Flow Rate and Methanol Concentration on DMFC Performance
Open AccessFeature PaperArticle

Performance of an Active Micro Direct Methanol Fuel Cell Using Reduced Catalyst Loading MEAs

CEFT, Departamento de Engenharia Química, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal
LNEG, Laboratório Nacional de Energia e Geologia, Fuel Cells and Hydrogen, Paço do Lumiar, 22, 1649-038 Lisboa, Portugal
Authors to whom correspondence should be addressed.
Energies 2017, 10(11), 1683;
Received: 11 September 2017 / Revised: 20 October 2017 / Accepted: 21 October 2017 / Published: 25 October 2017
(This article belongs to the Special Issue Direct Alcohol Fuel Cells 2018)
The micro direct methanol fuel cell (MicroDMFC) is an emergent technology due to its special interest for portable applications. This work presents the results of a set of experiments conducted at room temperature using an active metallic MicroDMFC with an active area of 2.25 cm2. The MicroDMFC uses available commercial materials with low platinum content in order to reduce the overall fuel cell cost. The main goal of this work is to provide useful information to easily design an active MicroDMFC with a good performance recurring to cheaper commercial Membrane Electrode Assemblies MEAs. A performance/cost analysis for each MEA tested is provided. The maximum power output obtained was 18.1 mW/cm2 for a hot-pressed MEA with materials purchased from Quintech with very low catalyst loading (3 mg/cm2 Pt–Ru at anode side and 0.5 mg/cm2 PtB at the cathode side) costing around 15 euros. Similar power values are reported in literature for the same type of micro fuel cells working at higher operating temperatures and substantially higher cathode catalyst loadings. Experimental studies using metallic active micro direct methanol fuel cells operating at room temperature are very scarce. The results presented in this work are, therefore, very useful for the scientific community. View Full-Text
Keywords: MicroDMFC; experimental studies; commercial MEAs; low catalyst loading MicroDMFC; experimental studies; commercial MEAs; low catalyst loading
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Falcão, D.; Silva, R.; Rangel, C.; Pinto, A. Performance of an Active Micro Direct Methanol Fuel Cell Using Reduced Catalyst Loading MEAs. Energies 2017, 10, 1683.

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