Fabrication of a micro-direct methanol fuel cell using microfluidics
| Autor: | Win Bunjongpru, Charndet Hruanun, Supanit Porntheeraphat, Pinsuda Viravathana, Chumphol Yunphuttha, Amporn Poyai, Atchana Wongchaisuwat |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
General Chemical Engineering Analytical chemistry Proton exchange membrane fuel cell General Chemistry Conductivity Biochemistry Industrial and Manufacturing Engineering Cathode law.invention Anode chemistry.chemical_compound Direct methanol fuel cell chemistry law Nafion Electrode Materials Chemistry Power density |
| Zdroj: | Chemical Papers. 66 |
| ISSN: | 1336-9075 |
| DOI: | 10.2478/s11696-012-0230-7 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink