Electrodeposition of Zn-V oxide composite from sulfate solutions

Hiroaki Nakano, Satoshi Oue, Daisuke Kozaki, Shigeo Kobayashi, Hisaaki Fukushima

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Electrodeposition of Zn with V was tried in un-agitated or agitated sulfate solutions containing Zn2+ and VO2+ at pH 0-3 and 40°C under galvanostatic conditions. XPS spectra of deposits showed that V was involved in deposited Zn in form of V oxide by hydrolysis of V ions. The content of V in deposits increased with increasing pH in solution and current density. These conditions appear to accelerate the hydrolysis of V ions as a result of an increase in hydrogen evolution in cathode layer. SEM and EPMA images of deposits revealed that V in deposits segregated at edge of layered platelet crystals of Zn. The agitation of electrolyte decreased the content of V in deposits, but decreased the segregation of V oxide. Anodic polarization curves for Zn dissolution in 3% NaCl solution were polarized by codeposition of V oxide with Zn in the range of V content less than 5 mass%. The corrosion current densities of deposits obtained from agitated solutions were smaller than those from un-agitated solutions.

Original languageEnglish
Pages (from-to)703-708
Number of pages6
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume93
Issue number11
DOIs
Publication statusPublished - Nov 2007

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Electrodeposition
electrodeposition
Oxides
Sulfates
sulfates
Deposits
deposits
composite materials
oxides
Composite materials
hydrolysis
Hydrolysis
Current density
Ions
current density
agitation
Anodic polarization
Electron probe microanalysis
Platelets
platelets

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

Cite this

Electrodeposition of Zn-V oxide composite from sulfate solutions. / Nakano, Hiroaki; Oue, Satoshi; Kozaki, Daisuke; Kobayashi, Shigeo; Fukushima, Hisaaki.

In: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, Vol. 93, No. 11, 11.2007, p. 703-708.

Research output: Contribution to journalArticle

Nakano, Hiroaki ; Oue, Satoshi ; Kozaki, Daisuke ; Kobayashi, Shigeo ; Fukushima, Hisaaki. / Electrodeposition of Zn-V oxide composite from sulfate solutions. In: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan. 2007 ; Vol. 93, No. 11. pp. 703-708.
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