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Electrosynthesis and Microstructural Characterization of Anodic VOx Films

Published online by Cambridge University Press:  31 January 2011

J. P. Schreckenbach ,
D. Butte ,
G. Marx ,
B. R. Johnson  and
W. M. Kriven
J. P. Schreckenbach
Affiliation:
Institut für Chemie, Technische Universität Chemnitz, D-09111 Chemnitz, Germany
D. Butte
Affiliation:
Institut für Chemie, Technische Universität Chemnitz, D-09111 Chemnitz, Germany
G. Marx
Affiliation:
Institut für Chemie, Technische Universität Chemnitz, D-09111 Chemnitz, Germany
B. R. Johnson
Affiliation:
Department of Materials Science and Engineering, University of Illinois at Urbana- Champaign, Urbana, Illinois 61801
W. M. Kriven
Affiliation:
Department of Materials Science and Engineering, University of Illinois at Urbana- Champaign, Urbana, Illinois 61801
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Abstract

Anodic conversion films of vanadium oxides on vanadium were potentiodynamically generated at high voltages in an acetate electrolyte system. The microstructure of the anodic VOx coatings was characterized by surface and solid-state techniques such as scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, and x-ray photoelectron spectroscopy. An amorphous structure is proposed in which network-forming [VO4] tetrahedra in various degrees of condensation are connected by distorted [VO5] and [VO6] units. Such polyhedra lead to the formation of nanocrystalline phases of stoichiometric and substoichiometric vanadium oxides, which were observed in the amorphous phase.

Type
Articles
Information
Journal of Materials Research , Volume 15 , Issue 7 , July 2000 , pp. 1483 - 1489
Copyright
Copyright © Materials Research Society 2000

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