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Journal of Applied Electrochemistry

, Volume 19, Issue 4, pp 559–565 | Cite as

Material problems encountered in anodic MnO2 deposition

  • E. Preisler
Papers

Abstract

The characteristic material problems in electrolytic manganese dioxide (EMD) deposition concern the electrolysis cell components and, especially, the anodes. Temperature, sulphuric acid concentration, and current density are the most critical parameters which determine the corrosion and life times of the lead, graphite or titanium anodes. The corrosion of lead, even under the cover of electrodeposited manganese dioxide, pollutes the technical product. Graphite anodes are slowly oxidized, a process which limits their life time. The behaviour of titatanium as anode material is determined by the conductivities of the TiO x interlayer as well as of the manganese dioxide deposits in the layered system Ti−TiO x MnO2. Passivation and depassivation reactions in conventional EMD electrolysis are described and the improved behaviour of titanium anodes in the suspension bath process is explained.

Keywords

MnO2 Sulphuric Acid Life Time Anode Material Electrolysis Cell 
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]
    E. Preisler, in ‘3rd Manganese Dioxide Symposium, Graz 1985’ (edited by K. V. Kordesch and A. Kozawa), IBA, Cleveland (1985).Google Scholar
  2. [2]
    E. Preisler, in ‘Dechema Monographs’, Vol. 104. Proceedings of the Annual Meeting Fachgruppe Angewandte Elektrochemie, Dortmund 1986. Verlag Chemie, Weinheim (1987).Google Scholar
  3. [3]
    The Furukawa Electric Co., and Mitsui Mihonbashi Muromachi, US 3,436,323 (25.7.1986).Google Scholar
  4. [4]
    A. L. Fox, US-2,631,115 (6.8.1949).Google Scholar
  5. [5]
    A. L. Fox, US-2.608.531 (2.11.49).Google Scholar
  6. [6]
    Kerrr-McGee Chemical Corp., DE-OS 2 141 447 (18.8.71) US Prior. 25.8.70.Google Scholar
  7. [7]
    IMI, US 4,319,977 (3/1982); US 4,380,493 (4/1983).Google Scholar
  8. [8]
    Kerr-McGee Chemical Corp. US 4,606,804 (12.12.84).Google Scholar
  9. [9]
    Conradty company information sheet, private communication.Google Scholar
  10. [10]
    Hoechst, DE-OS 3 521 827 (19.6.85).Google Scholar
  11. [11]
    Japan Metal and Chemical Co., Ltd. US-4.405.419 (July 12, 1980) (Jap. priority: 12, 1979).Google Scholar
  12. [12]
    L. N. Dzaparidze, I. M. Dubov, E. A. Bogdanov, T. A. Cachunashvili, G. T. Gogoladze, A. A. Teisheva, G. N. Ryzygraeva, M. A. Melnikov-Eichenvald and T. V. Rokva, DE-PS 27 23 406 (mai 24, 77).Google Scholar
  13. [13]
    G. Bewer, H. Debroth and H. Herbst,J. Metals (1982) 37.Google Scholar
  14. [14]
    HOECHST AG/SIGRI GmbH, DE-PS 2 645 414 (8. 10.1976).Google Scholar
  15. [15]
    R. I. Agladze, K. S. Vanidze and L. A. Zautshvili, SU 891 805 (20.05.80).Google Scholar
  16. [16]
    Hoechst AG, Eu-PA-0148 439 (12.12.84) (Prior. DE 21.12.83).Google Scholar
  17. [17]
    HOESCH, DE OS 35 10 592 (4.10.84).Google Scholar
  18. [18]
    L. N. Dzaparidze, T. A. Tschachunashvili, V. R. Majsuradse, R. V. Tschagunava, Z. J. Kervalishvili, N. G. Sicharulidze, D. G. Otiashvili and A. P. Epik, DE-PS 27 34 162 (28.07.77).Google Scholar
  19. [19]
    A. M. Guggs and R. S. Dean (P. R. Mallory & Co.) US 2,636,856 (29.06.1948).Google Scholar
  20. [20]
    E. Preisler,J. Appl. Electrochem. 6 (1975) 311.Google Scholar
  21. [21]
    K. E. Heusler und M. Schulze,Electrochim. Acta 20 (1975) 237.Google Scholar

Copyright information

© Chapman and Hall Ltd 1989

Authors and Affiliations

  • E. Preisler
    • 1
  1. 1.Hoechst AGWerk KnapsackHürthGermany

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