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Development of MEMS-based direct methanol fuel cell with high power density using nanoimprint technology
- Source :
-
Electrochemistry Communications . Jun2007, Vol. 9 Issue 6, p1365-1368. 4p. - Publication Year :
- 2007
-
Abstract
- Abstract: Performance of MEMS-based DMFC is low, because graphite-based porous electrodes show poor compatibility with MEMS technology. Nanoimprint technology was adopted in this paper to prepare fine pattern on proton exchange membrane (PEM) in MEMS-based DMFC as a promising alternative to the graphite-based porous electrodes. Micro-convex with the diameter of about 600nm and the height of 50–70nm was prepared on Nafion® 117 membrane by the nanoimprint at 130°C using silicon mold. Thick Pt film (20nm) was deposited as catalyst directly on the nanoimprinted Nafion® 117 membrane. Then the Pt-coated PEM was sandwiched with micro-channeled silicon plates to form a micro-DMFC. With passively feeding of 1M methanol solution and air at room temperature, the as-prepared cell had the open circuit voltage (OCV) of 0.74V and the maximum power density of 0.20mW/cm2. The measured OCV was higher than those (0.1–0.3V) of the state-of-the-art MEMS-based DMFC with planar electrode and pure Pt catalyst. [Copyright &y& Elsevier]
- Subjects :
- *ELECTRODES
*ELECTRIC potential
*CATALYSTS
*SILICON
Subjects
Details
- Language :
- English
- ISSN :
- 13882481
- Volume :
- 9
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Electrochemistry Communications
- Publication Type :
- Academic Journal
- Accession number :
- 25210476
- Full Text :
- https://doi.org/10.1016/j.elecom.2007.01.051