Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10269285 | Electrochimica Acta | 2005 | 5 Pages |
Abstract
Miniaturized fuel cells as compact power sources fabricated in Pyrex glass using standard polymer electrolyte membrane (PEM) and electrode materials are presented. Photolithographic patterned and wet chemically etched serpentine flow channels of 1âmm in width and 250âμ m in depth transport the fuels to the cell of 1.44âcm2 active electrode area. Feeding H2/O2 a maximum power density of 149âmWâcmâ2 is attained at a very low Pt loading of 0.054âmgâcmâ2, ambient pressure, and room temperature. Operated with methanol and oxygen about 9âmWâcmâ2 are achieved at ambient pressure, 60â°C, and 1âmgâcmâ2 PtRu/Pt (anode/cathode) loading. A planar two-cell stack to demonstrate and investigate the assembly of a fuel cell system on Pyrex wafers has successfully been fabricated.
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Authors
D. Gruber, N. Ponath, J. Müller,