Journal of Applied Electrochemistry

, Volume 22, Issue 5, pp 409–414

Microcalorimetric study of the self-discharge of the NiOOH/Ni(OH)2 electrode in a hydrogen environment

  • Z. Mao
  • A. Visintin
  • S. Srinivasan
  • A. J. Appleby
  • H. S. Lim


A microcalorimetric method has been used to investigate the self-discharge behaviour of nickel oxyhydroxide electrodes in a pressurized gaseous hydrogen environment. It was found that the heat generation rate is proportional to hydrogen pressure, and is significantly dependent on the immersion state of the electrode in the electrolyte. Hence, diffusion of dissolved hydrogen gas towards or within the electrode controls, at least partially, the self-discharge rate. However, the heat generation decreases exponentially with time, indicating that self-discharge is also proportional to the amount of the charged active material available for the reaction. The presence of Mg, Co and Cd oxides or hydroxides appears to inhibit self-discharge. It was found that direct chemical reaction between dissolved hydrogen and the active material dominates, while in addition, electrochemical oxidation of hydrogen coupled with electrochemical reduction of the active material might also occur at a much smaller rate than the direct reaction.


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  1. [1]
    Y. Kim, A. Visintin, S. Srinivasan and A. J. Appleby, in ‘Nickel Hydroxide Electrodes’, (edited by D. A. Corrigan and A. H. Zimmerman),The Electrochemical Society, Pennington NJ,90-4 (1990), p. 368.Google Scholar
  2. [2]
    A. Visintin, S. Srinivasan, A. J. Appleby and H. S. Lim, in pressJ. Electrochem. Soc. Google Scholar
  3. [3]
    H. S. Lim and D. B. Losee, ‘Studies on Self-Discharge Mechanism of Ni−H2 Cells', to be published.Google Scholar
  4. [4]
    L. D. Hansen and R. M. Hart,J. Electrochem. Soc. 125 (1978) 842.Google Scholar
  5. [5]
    L. D. Hansen and H. Frank,134 (1987) 1.Google Scholar
  6. [6]
    D. F. Picketet al., Proceedings of the 15th Intersociety Energy Conversion Engineering Conference, Seattle WA (1980) p. 1918.Google Scholar
  7. [7]
    B. I. Tsenter and A. I. Sluzhenvskii,Z. Prikladnoi Khim. 54 (1981) 2545.Google Scholar
  8. [8]
    G. Holleck, Proceedings of the 1977 Goddard Space Flight Battery Workshop, NASA Conference Publication (1977) p. 2041.Google Scholar
  9. [9]
    R. Battio and E. Wilhelm, ‘IUPAC Solubility Data Series’, (edited by C. L. Young), Pergamon Press, New York,5/6 (1981) p. 33.Google Scholar
  10. [10]
    ‘Chemical Engineering Handbook’, 5th ed., (edited by R. H. Perry and C. H. Chilton), McGraw Hill, New York (1973), pp. 3–23.Google Scholar
  11. [11]
    G. W. D. Briggs and P. R. Snodin,Electrochim. Acta 27 (1982) 565.Google Scholar
  12. [12]
    D. M. MacArthur,J. Electrochem. Soc. 117 (1970) 729.Google Scholar
  13. [13]
    Z. Mao and R. E. White,J. Electrochem Soc. 138 (1991) 3354.Google Scholar
  14. [14]
    S. G. Bratsh,J. Phys. Chem. Data 18 (1989) 1.Google Scholar
  15. [15]
    C. Zhang, R. E. White, J. Kim, A. J. Appleby and S. Srinivasan, in Y. Kim et al., ‘Nickel Hydroxide Electrodes’ (edited by D. A. Corrigan and A. H. Zimmerman),The Electrochemical Society, Pennington NJ,90-4 (1990) p. 356.Google Scholar

Copyright information

© Chapman & Hall 1992

Authors and Affiliations

  • Z. Mao
    • 1
  • A. Visintin
    • 1
  • S. Srinivasan
    • 1
  • A. J. Appleby
    • 1
  • H. S. Lim
    • 2
  1. 1.Center for Electrochemical Systems and Hydrogen ResearchTexas A&M UniversityCollege StationUSA
  2. 2.Electron Dynamics DivisionHughes Aircraft CompanyTorranceUSA
  3. 3.Department of Chemical EngineeringTexas A&M UniversityCollege Station

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