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231223s2004 xx ||||| 00| ||eng c |
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|a DE-627
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|a eng
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|a Mitrovski, Svetlana M
|e verfasserin
|4 aut
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|a Microfluidic devices for energy conversion
|b planar integration and performance of a passive, fully immersed H2-O2 fuel cell
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|c 2004
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 09.06.2006
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|a Date Revised 10.08.2004
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a We describe the fabrication and performance of a passive, microfluidics-based H2-O2 microfluidic fuel cell using thin film Pt electrodes embedded in a poly(dimethylsiloxane) (PDMS) device. The electrode array is fully immersed in a liquid electrolyte confined inside the microchannel network, which serves also as a thin gas-permeable membrane through which the reactants are fed to the electrodes. The cell operates at room temperature with a maximum power density of around 700 microW/cm(2), while its performance, as recorded by monitoring the corresponding polarization curves and the power density plots, is affected by the pH of the electrolyte, its concentration, the surface area of the Pt electrodes, and the thickness of the PDMS membrane. The best results were obtained in basic solutions using electrochemically roughened Pt electrodes, the roughness factor, R(f), of which was around 90 relative to a smooth Pt film. In addition, the operating lifetime of the fuel cell was found to be longer for the one using higher surface area electrodes
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|a Journal Article
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|a Elliott, Lindsay C C
|e verfasserin
|4 aut
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|a Nuzzo, Ralph G
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 20(2004), 17 vom: 17. Aug., Seite 6974-6
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:20
|g year:2004
|g number:17
|g day:17
|g month:08
|g pages:6974-6
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|a GBV_ILN_721
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|a AR
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| 952 |
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|d 20
|j 2004
|e 17
|b 17
|c 08
|h 6974-6
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