Electrochemical properties of the CaNi 4 . 8 M 0.2 (M=Mg, Zn, and Mn) mechanical milling alloys used as anode materials in nickel‐metal hydride batteries - Université du Littoral Côte d'Opale Accéder directement au contenu
Article Dans Une Revue Environmental Progress & Sustainable Energy Année : 2023

Electrochemical properties of the CaNi 4 . 8 M 0.2 (M=Mg, Zn, and Mn) mechanical milling alloys used as anode materials in nickel‐metal hydride batteries

Résumé

Abstract The present research work examines the electrochemical properties of CaNi 4.8 M 0.2 (M=Mg, Zn) type alloy applied as an anode in nickel metal hybrid batteries. Based on an extensive study of the CaNi 4.8 Mn 0.2 compound prepared by mecano‐synthesis; under an argon atmosphere, with a variation of milling time and weigh ratio, using a Retsch PM400 type ball mill. The experimental results show that the excellent electrochemical properties were obtained for a milling time of 40 h and a ball‐to‐powder weight ratio equal to 8:1. Based on this study, we examined electrochemically the CaNi 4.8 M 0.2 (M=Mg, Zn, and Mn) compound according to the optimized parameters. Several methods, such as galvanostatic polarization and potentiodynamic polarization, were applied to characterize these electrodes. CaNi 4.8 M 0.2 (M=Mg, Zn, and Mn) electrodes were activated, respectively, during the first, second, and third cycles. The maximum discharge capacity was about 87, 60, and 96 mAhg −1 at ambient temperature. These electrochemical findings correlate with the kinetic results provided during a long cycle.
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Dates et versions

hal-04294966 , version 1 (20-11-2023)

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Imen Karaoud, Youssef Dabaki, Chokri Khaldi, Omar Elkedim, Nouredine Fenineche, et al.. Electrochemical properties of the CaNi 4 . 8 M 0.2 (M=Mg, Zn, and Mn) mechanical milling alloys used as anode materials in nickel‐metal hydride batteries. Environmental Progress & Sustainable Energy, 2023, 42 (5), pp.e14118. ⟨10.1002/ep.14118⟩. ⟨hal-04294966⟩
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