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A simple and novel method for preparing Ni(OH)2 Part I: Structural studies and voltammetric response

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Abstract

Ni/Ni(OH)2 electrodes were prepared by in situ precipitation of nickel hydroxide into porous nickel substrates. The thermal decomposition of urea in solutions containing Ni2+ was used for the synthesis of the active material. The compound prepared by this method was a poorly crystallized β(II)-type phase. The electrochemical behaviour of Ni/Ni(OH)2 electrodes thus prepared was studied by cyclic voltamperommetry and the efficiency of the in situ precipitation was followed by the measurement of the cathodic charge obtained from the j-E response. The amount of incorporated material depends on the urea concentration and the electrochemical response of the electrodes was improved by increasing the number of impregnation cycles.

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Authors and Affiliations

  1. Departmento de Fisico Química, Fac. de Ciencias Quimicas, INFIQC, U.N.C. Suc. 16, C.C. 61, 5016, Córdoba, Argentina

    M. J. Avena, M. V. Vazquez, R. E. Carbonio, C. P. De Pauli & V. A. Macagno

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  1. M. J. Avena
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  2. M. V. Vazquez
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  3. R. E. Carbonio
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  4. C. P. De Pauli
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  5. V. A. Macagno
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Avena, M.J., Vazquez, M.V., Carbonio, R.E. et al. A simple and novel method for preparing Ni(OH)2 Part I: Structural studies and voltammetric response. J Appl Electrochem 24, 256–260 (1994). https://doi.org/10.1007/BF00242893

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  • DOI: https://doi.org/10.1007/BF00242893

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