Potentiostatic and ac impedance studies of the hydrogen electrodes used in Ni/H2 batteriesIn a study of electrode activity for hydrogen evolution and hydrogen ionization, knowledge of the detailed kinetics and of the surface coverage by adsorbed hydrogen is essential. In the Ni/H2 battery, the hydrogen electrode is subjected to high hydrogen pressure; elucidation of the variation of kinetic parameters with hydrogen pressure is therefore of interest. Potentiostatic and ac impedance spectroscopic techniques were used in the present study. The equivalent circuit of the reaction, the kinetic parameters, and their pressure dependence have been determined.
Document ID
19930048975
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Le Helloco, Jean-Guy (NASA Headquarters Washington, DC United States)
Bojkov, Hristo (NASA Headquarters Washington, DC United States)
Parthasarathy, Arvind (NASA Headquarters Washington, DC United States)
Srinivasan, Supramaniam (NASA Headquarters Washington, DC United States)
Appleby, A. J. (Texas A & M Univ. College Station, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: Hydrogen storage materials, batteries, and electrochemistry; Proceedings of the Symposium, Phoenix, AZ, Oct. 14-17, 1991 (A93-32963 12-25)