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Electrochemical Study of the Cobalt-Containing and Non-Cobalt-Containing AB5 Alloys Used as Negative Electrodes in Nickel–Metal Hydride Batteries

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Progress in Clean Energy, Volume 2

Abstract

The thermodynamic parameters of LaNi3.55Mn0.4Al0.3Co0.75 and LaNi3.55Mn0.4Al0.3Fe0.75 alloys have been evaluated from the electrochemical isotherms determined by OCV method. A comparative study has been done between the parameter values deduced from the electrochemical OCV method and the solid–gas method. It was found that the difference can be explained by the electrochemical corrosion of these alloys in aqueous KOH electrolyte. The corrosion behavior of the LaNi3.55Mn0.4Al0.3Co0.75 and LaNi3.55Mn0.4Al0.3Fe0.75 electrodes after activation was investigated using the method of the potentiodynamic polarization. The evolution of corrosion current density and potential values as function of the state of charge (SOC), show that the total substitution of cobalt by iron leads to accentuate the corrosion process.

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Acknowledgement

The authors would like to express their gratefulness towards Mr. M. Latroche and Mrs. A. Percheron-Guégan (LCMTR, CNRS, France) for having given them the opportunity to prepare the alloys in their laboratory.

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Authors and Affiliations

  1. Equipe des Hydrures Métalliques, Laboratoire de Mécanique, Matériaux et Procédés, Ecole Nationale Supérieure des Ingénieurs de Tunis, Université de Tunis, 5 Avenue Taha Hussein, 1008, Tunis, Tunisia

    Chokri Khaldi & Jilani Lamloumi

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  1. Chokri Khaldi
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  2. Jilani Lamloumi
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Correspondence to Chokri Khaldi .

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Editors and Affiliations

  1. Department of Mechanical Engineering, University of Ontario, Institute of Technology, Oshawa, Ontario, Canada

    Ibrahim Dincer

  2. Department of Mechanical Engineering, Dokuz Eylul University, Izmir, Turkey

    C. Ozgur Colpan

  3. Department of Energy Systems Engineering, Suleyman Demirel University, Isparta, Turkey

    Onder Kizilkan

  4. Department of Mechanical Engineering, Dokuz Eylul University, Izmir, Turkey

    M. Akif Ezan

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Khaldi, C., Lamloumi, J. (2015). Electrochemical Study of the Cobalt-Containing and Non-Cobalt-Containing AB5 Alloys Used as Negative Electrodes in Nickel–Metal Hydride Batteries. In: Dincer, I., Colpan, C., Kizilkan, O., Ezan, M. (eds) Progress in Clean Energy, Volume 2. Springer, Cham. https://doi.org/10.1007/978-3-319-17031-2_1

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  • DOI: https://doi.org/10.1007/978-3-319-17031-2_1

  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-17030-5

  • Online ISBN: 978-3-319-17031-2

  • eBook Packages: EnergyEnergy (R0)

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