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Fabrication of a micro-direct methanol fuel cell using microfluidics

  • Chumphol Yunphuttha EMAIL logo , Win Bunjongpru , Supanit Porntheeraphat , Atchana Wongchaisuwat , Charndet Hruanun , Amporn Poyai und Pinsuda Viravathana
Veröffentlicht/Copyright: 13. September 2012
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Chemical Papers
Aus der Zeitschrift Chemical Papers Band 66 Heft 12

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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Published Online: 2012-9-13
Published in Print: 2012-12-1

© 2012 Institute of Chemistry, Slovak Academy of Sciences

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https://doi.org/10.2478/s11696-012-0230-7
Schlagwörter für diesen Artikel
microfluidics; micro-direct methanol fuel cell; micro-fuel cell; electrochemical process

Artikel in diesem Heft

  1. Quantitative analysis of two adulterants in Cynanchum stauntonii by near-infrared spectroscopy combined with multi-variate calibrations
  2. Study of deoxynivalenol effect on metallothionein and glutathione levels, antioxidant capacity, and glutathione-S-transferase and liver enzymes activity in rats
  3. Biodegradation of tobacco waste by composting: Genetic identification of nicotine-degrading bacteria and kinetic analysis of transformations in leachate
  4. Optimal glucose and inoculum concentrations for production of bioactive molecules by Paenibacillus polymyxa RNC-D
  5. Electrodialysis of oxalic acid: batch process modeling
  6. Relationship between the decrease of degree of polymerisation of cellulose and the loss of groundwood pulp paper mechanical properties during accelerated ageing
  7. Improved hydrothermal synthesis of MoS2 sheathed carbon nanotubes
  8. Fabrication of a micro-direct methanol fuel cell using microfluidics
  9. Determination of pK a of benzoic acid- and p-aminobenzoic acid-modified platinum surfaces by electrochemical and contact angle measurements
  10. Theoretical enthalpies of formation and structural characterisation of halogenated nitromethanes and isomeric halomethyl nitrites
  11. Assessment of role of rosmarinic acid in preventing oxidative process of low density lipoproteins
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