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Development Of A Micropatterned Electrode For Studies Of Zinc Electrodeposition


Development Of A Micropatterned Electrode For Studies Of Zinc Electrodeposition
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Development Of A Micropatterned Electrode For Studies Of Zinc Electrodeposition


Development Of A Micropatterned Electrode For Studies Of Zinc Electrodeposition
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Author : Davor Peter Sutija
language : en
Publisher:
Release Date : 1986

Development Of A Micropatterned Electrode For Studies Of Zinc Electrodeposition written by Davor Peter Sutija and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.




The Development Of A Micropatterned Electrode For Studies Of Zinc Electrodeposition


The Development Of A Micropatterned Electrode For Studies Of Zinc Electrodeposition
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Author :
language : en
Publisher:
Release Date : 1986

The Development Of A Micropatterned Electrode For Studies Of Zinc Electrodeposition written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.


A micropatterned electrode was prepared for the study of electrocrystallization. Using microphotolithography, in conjunction with evaporation and pulse electrodeposition of thin films, a set of artificially roughened electrodes with hemispherical surface features five microns in diameter was developed. Voltammetric studies were conducted to determine the best electrode material. Gold, platinum, and various carbon surfaces were evaluated for zinc nucleation density and hydrogen overpotential. Surface homogeneity was examined by both light and scanning electron microscopy. Gold was determined to possess the best combination of material properties: chemical inertness, low melting point, and a high work function allowing underpotential deposition of zinc which reduces the rate of hydrogen evolution. Stripping coulometry was employed to determine zinc limiting currents, and evaluate effective diffusion coefficients in concentrated zinc chloride solutions. Although the method worked well for dilute zinc chloride and copper sulfate solutions, it failed at higher current densities; the emergence of surface roughness obscured actual limiting current plateaus.



Proceedings Of The First International Symposium On Electrochemical Microfabrication


Proceedings Of The First International Symposium On Electrochemical Microfabrication
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Author : Madhav Datta
language : en
Publisher:
Release Date : 1992

Proceedings Of The First International Symposium On Electrochemical Microfabrication written by Madhav Datta and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Science categories.




Energy Research Abstracts


Energy Research Abstracts
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Author :
language : en
Publisher:
Release Date : 1987

Energy Research Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Power resources categories.




Levelling Of Microprofiles In Electrodeposition


Levelling Of Microprofiles In Electrodeposition
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Author : Kenneth Guy Jordan
language : en
Publisher:
Release Date : 1991

Levelling Of Microprofiles In Electrodeposition written by Kenneth Guy Jordan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.




Micro Scale Mass Transfer Variations During Electrodeposition


Micro Scale Mass Transfer Variations During Electrodeposition
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Author :
language : en
Publisher:
Release Date : 1991

Micro Scale Mass Transfer Variations During Electrodeposition written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.


Results of two studies on micro-scale mass-transfer enhancement are reported: (1) Profiled cross-sections of striated zinc surfaces deposited in laminar channel flow were analyzed with fast-fourier transforms (FFT) to determine preferred striation wavelengths. Striation frequency increases with current density until a minimum separation between striae of 150 [mu]m is reached. Beyond this point, independent of substrate used, striae meld together and form a relatively smooth, nodular deposit. Substrates equipped with artificial micron-sized protrusions result in significantly different macro-morphology in zinc deposits. Micro-patterned electrodes (MPE) with hemispherical protrusions 5 [mu]m in diameter yield thin zinc striae at current densities that ordinarily produce random nodular deposits. MPEs with artificial hemi-cylinders, 2.5 [mu]m in height and spaced 250 [mu]m apart, form striae with a period which matches the spacing of micron-sized ridges. (2) A novel, corrosion-resistant micromosaic electrode was fabricated on a silicon wafer. Measurements of mass-transport enhancement to a vertical micromosaic electrode caused by parallel bubble streams rising inside of the diffusion boundary-layer demonstrated the presence of two co-temporal enhancement mechanisms: surface-renewal increases the limiting current within five bubble diameters of the rising column, while bubble-induced laminar flows cause weaker enhancement over a much broader swath. The enhancement caused by bubble curtains is predicted accurately by linear superposition of single-column enhancements. Two columns of smaller H2 bubbles generated at the same volumetric rate as a single column of larger bubbles cause higher peak and far-field enhancements. 168 refs., 96 figs., 6 tabs.



Erda Energy Research Abstracts


Erda Energy Research Abstracts
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Author :
language : en
Publisher:
Release Date : 1987

Erda Energy Research Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Power resources categories.




Zinc Electrodeposition And Dendritic Growth From Zinc Halide Electrolytes


Zinc Electrodeposition And Dendritic Growth From Zinc Halide Electrolytes
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Author : Uziel Landau
language : en
Publisher:
Release Date : 1982

Zinc Electrodeposition And Dendritic Growth From Zinc Halide Electrolytes written by Uziel Landau and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Electric batteries categories.




Government Reports Annual Index


Government Reports Annual Index
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Author :
language : en
Publisher:
Release Date : 1987

Government Reports Annual Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Government reports announcements & index categories.




The Causes And Prevention Of Dendritic Growth In Zinc Electrodeposition


The Causes And Prevention Of Dendritic Growth In Zinc Electrodeposition
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Author : Thomas W. Higgins
language : en
Publisher:
Release Date : 1962

The Causes And Prevention Of Dendritic Growth In Zinc Electrodeposition written by Thomas W. Higgins and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Dendrites categories.