Laboratoire des Matériaux Utiles, Institut National de Recherche et d’Analyses Physico-Chimiques, Pôle Technologique de Sidi Thabet,
2020 Sidi Thabet
Tunisia
Research Article
Electrochemical Study of the Hydrogenation of LaZr2Cr4Ni5-Based Alloys
Author(s): Ines Sahli, Mouna Elghali, Marwa Ayari, Ouassim Ghodbane and Mohieddine AbdellaouiInes Sahli, Mouna Elghali, Marwa Ayari, Ouassim Ghodbane and Mohieddine Abdellaoui
The electrochemical behavior of LaZr2Cr4Ni5-based alloys applied as negative electrode materials for Ni–metal hydride (Ni–MH) batteries was investigated by cyclic voltammetry (CV), chronoamperometry and electrochemical impedance spectroscopy (EIS) techniques. The hydrogen diffusion coefficient, determined by CV, was equal to 1.28 × 10−8 cm2s−1 reflecting an appropriate electrochemical hydrogenation kinetic of the LaZr2Cr4Ni5-based compound. The evolution of the hydrogen diffusion coefficient was also investigated by EIS first at different state of charge (10% and 100%) and second as function of charge/discharge cycling. Upon the first cycle, the diffusion coefficient increases from 31.72 × 10-8 cm2s-1 to reach a maximum v.. Read More»
Journal of Material Sciences & Engineering received 3677 citations as per Google Scholar report