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Journal of Applied Electrochemistry

, Volume 22, Issue 7, pp 593–595 | Cite as

Activation of passivated titanium anodes from the electrolysis of MnO2

  • M. E. Armacanqui
  • R. J. Ekern
Papers

Abstract

Titanium anodes with and without a MnO2 precoat were passivated during deposition of electrolytic manganese dioxide and subsequently activated by cathodic reduction. The time dependance of the titanium voltage during passivation and during cathodic reduction was determined by the initial state of the surface. Nonactivated titanium passivated considerably faster than activated titanium with the same thickness of precoat. The application of cathodic currents to passivated anodes caused detachment of the precoat and reduction of the passivating film underneath the precoat. Reduction of the passivating film grown on precoated titanium seems to occur at a much smaller rate than reduction of the film grown on unprecoated titanium.

Keywords

Titanium Physical Chemistry Dioxide Manganese Time Dependance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    F. Hine, M. Yasuda, T. Iida, Y. Ogata, and K. Hara,Electrochim. Acta 29 (1984) 1447. See also N. G. Feige, US Patent 3855 084 (1974).Google Scholar
  2. [2]
    S. C. Lai, US Patent 3 841 978 (1974) O. R. Riggs, US Patent 4 189 357 (1980).Google Scholar
  3. [3]
    E. A. Kalinovskii, Y. K. Rossinskii, V. A. Shustov, and Z. M. Kebadze,Z. Prikladnoi Khimii 61 (1988) 299.Google Scholar
  4. [4]
    T. Ohtsuka, M. Masuda, and N. Sato,J. Electrochem. Soc. 134 (1987) 2406.Google Scholar
  5. [5]
    E. A. Kalinovskii, Y. K. Rossinskii, and Z. M. Kebadze,Z. Prikladnoi Khimii 61 (1988) 293.Google Scholar
  6. [6]
    M. D. Archer and N. C. Grant,Proc. Roy. Soc. Lond. A395 (1984) 165.Google Scholar
  7. [7]
    R. M. Torresi, O. R. Camara, and C. P. De Pauli,Electrochim. Acta 32 (1987) 1291.Google Scholar
  8. [8]
    K. Matsuki and M. Sugawara,Prog. Batteries and Solar Cells 8 (1989) 28.Google Scholar
  9. [9]
    J. Petitpierre, C. Comminellis, and E. Plattner,Electrochim. Acta 35 (1990) 281.Google Scholar
  10. [10]
    M. E. Armacanqui and R. J. Ekern,J. App. Electrochem. submitted.Google Scholar
  11. [11]
    D. J. Blackwood, L. M. Peter, and D. W. Williams,Electrochim. Acta 33 (1988) 1143.Google Scholar
  12. [12]
    D. J. Blackwood and L. M. Peter,34 (1989) 1505.Google Scholar

Copyright information

© Chapman & Hall 1992

Authors and Affiliations

  • M. E. Armacanqui
    • 1
  • R. J. Ekern
    • 1
  1. 1.RAYOVAC CorporationMadisonUSA

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