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Volume 66, Issue 12

Issues

Fabrication of a micro-direct methanol fuel cell using microfluidics

Chumphol Yunphuttha
  • Department of Chemistry, Faculty of Science, National Research University-Kasetsart University, 50 Ngam Wong Wan Rd, Chatuchak, Bangkok, 10900, Thailand
  • Center of Advanced Studies in Tropical Natural Resources, National Research University-Kasetsart University, 50 Ngam Wong Wan Rd, Chatuchak, Bangkok, 10900, Thailand
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/ Win Bunjongpru / Supanit Porntheeraphat / Atchana Wongchaisuwat
  • Department of Chemistry, Faculty of Science, National Research University-Kasetsart University, 50 Ngam Wong Wan Rd, Chatuchak, Bangkok, 10900, Thailand
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/ Charndet Hruanun / Amporn Poyai / Pinsuda Viravathana
  • Department of Chemistry, Faculty of Science, National Research University-Kasetsart University, 50 Ngam Wong Wan Rd, Chatuchak, Bangkok, 10900, Thailand
  • Center of Advanced Studies in Tropical Natural Resources, National Research University-Kasetsart University, 50 Ngam Wong Wan Rd, Chatuchak, Bangkok, 10900, Thailand
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  • Other articles by this author:
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Published Online: 2012-09-13 | DOI: https://doi.org/10.2478/s11696-012-0230-7

Abstract

A direct-methanol fuel cell containing three parts: microchannels, electrodes, and a proton exchange membrane (PEM), was investigated. Nafion resin (NR) and polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (PS) were used as PEMs. Preparation of PEMs, including compositing with other polymers and their solubility, was performed and their proton conductivity was measured by a four point probe. The results showed that the 5 % Nafion resin has lower conductivity than the 5 % PS solution. The micro-fuel cell contained two acrylic channels, PEM, and two platinum catalyst electrodes on a silicon wafer. The assembled micro-fuel cells used 2 M methanol at the flow rate of 1.5 mL min−1 in the anode channel and 5 × 10−3 M KMnO4 at the flow rate of 1.5 mL min−1 in the cathode channel. The micro-fuel cell with the electrode distance of 300 μm provided the power density of 59.16 μW cm−2 and the current density of 125.60 μA cm−2 at 0.47 V.

Keywords: microfluidics; micro-direct methanol fuel cell; micro-fuel cell; electrochemical process

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About the article

Published Online: 2012-09-13

Published in Print: 2012-12-01


Citation Information: Chemical Papers, Volume 66, Issue 12, Pages 1137–1145, ISSN (Online) 1336-9075, DOI: https://doi.org/10.2478/s11696-012-0230-7.

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© 2012 Institute of Chemistry, Slovak Academy of Sciences.

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