Abstract
The electrochemical properties of nickel hydroxide, produced via an electrodialysis process are studied by means of cyclic voltametry and in-situ ellipsometry methods. The Ni(OH)2 electrodes are thin layers of nickel hydroxide powder deposited on a polished platinum substrate. Electrochemical and optical properties are investigated in a voltage domain including the so-called “second discharge process”. The reduction of nickel hydroxide proceeds at two successive potentials with a recovering of the initial optical data only after the second discharge step. The first discharge step leads to a nickel hydroxide not fully discharged while the second discharge step is coupled both to a sudden change in the nickel hydroxide properties and an agglomeration of particles phenomenon.
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Project financed by the E.U., program Brite Euram BRPR-CT97-0515 (NEARBY)
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Fourgeot, F., Deabate, S., Henn, F. et al. Joined ellipsometry and voltametry investigation on the second discharge plateau in Ni(OH)2 . Ionics 6, 364–368 (2000). https://doi.org/10.1007/BF02374154
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DOI: https://doi.org/10.1007/BF02374154