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Materials Science

, Volume 30, Issue 1, pp 50–56 | Cite as

Kinetics of hydrogen release on newly formed and hydrogenated metal surfaces

  • I. I. Dykyi
  • I. I. Vasylenko
  • I. M. Protsiv
Article
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Abstract

We study the regularities of cathodic processes accompanied by hydrogen depolarization as a function of the energy state of the metal surface, including its purity and degree of hydrogenation. It was established that hydrogen release on a newly formed metal surface (NFS) is activation-free and diffusion-controlled and its rate is determined by the exchange current. Hydrogenation of the surface increases the work function of escape of an electron, decreases the probability of escape of electrons from a metal into solution by changing the structure of the electric double layer, and, thus, slows down hydrogen release.

Keywords

Hydrogen Energy State Metal Surface Double Layer Work Function 
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References

  1. 1.
    I. I. Dykyi and I. M. Protsiv, “Kinetics of hydrogen release on strained iron surfaces,”Zashch. Met., No. 1, 42–44 (1994).Google Scholar
  2. 2.
    I. I. Dykyi and I. M. Protsiv, “Changes in the activation energy and the rate of hydrogen release from neutral media due to deformation,”Fiz.-Khim. Mekh. Mater. 29, No. 6, 16–22 (1993).Google Scholar
  3. 3.
    L. I. Antropov,Theoretical Electrochemistry [in Russian], Vysshaya Shkola, Moscow (1969).Google Scholar
  4. 4.
    V. V. Skorchelletti,Theoretical Electrochemistry [in Russian], Khimiya, Leningrad (1974).Google Scholar
  5. 5.
    N. E. Khomutov, “Hydrogen overvoltage and the multiplet theory of catalysis due to A. A. Balandin. Electrochemical studies,”Trudy Moskov. Khim. Tekhn. Inst. XXXII, 120–124 (1961).Google Scholar
  6. 6.
    G. A. Martynov and R. R. Salem, “On the mechanism of the reaction of hydrogen depolarization,”Zashch. Met., No. 2, 221–228 (1985).Google Scholar
  7. 7.
    B. M. Tsarev,Contact Voltage [in Russian], Vysshaya Shkola, Moscow; Leningrad (1949).Google Scholar
  8. 8.
    K. Vetter,Electrochemical Kinetics [Russian translation], Khimiya, Moscow (1967).Google Scholar
  9. 9.
    N. A. Galaktionova,Hydrogen in Metals [in Russian], Metallurgiya, Moscow (1967).Google Scholar
  10. 10.
    A. M. Brodskii, Yu. Ya. Gurevich, Yu. V. Pleskov, and Z. A. Rotenberg,Modern Photoelectrochemistry. Photoemission Phenomena [in Russian], Nauka, Moscow (1974).Google Scholar
  11. 11.
    R. I. Lazorenko-Manevich, L. A. Sokolova, and Ya. M. Kolotyrkin, “Modulation-electroscopic study of adsorption on electrodes. Acidity of water adsorbed on iron,”Élektrokhimiya 14, No. 12, 1779–1786 (1978).Google Scholar
  12. 12.
    L. I. Krishtalik,Electrode Reactions. Mechanisms of Primary Processes [in Russian], Nauka, Moscow (1979).Google Scholar

Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • I. I. Dykyi
  • I. I. Vasylenko
  • I. M. Protsiv

There are no affiliations available

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