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Electrochemical properties of the LaNi3.55Mn0.4Al0.3Co0.4Fe0.35 hydrogen storage alloy |
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| Authors: | M Tliha H Mathlouthi C Khaldi J Lamloumi A Percheron-guegan |
| Affiliation: | aLaboratoire de Mécanique, Matériaux et Procédés, ESSTT, 5 Avenue Taha Hussein 1008 Tunis, Tunisia bLaboratoire de Chimie Métallurgique des Terres Rares, GLVT, 2-8 Rue Henri Dunant 94320, Thiais Cedex, France |
| Abstract: | The electrochemical properties of LaNi3.55Mn0.4Al0.3Co0.4Fe0.35 hydrogen storage alloy have been studied through chronopotentiometric, chronoamperometric and cyclic voltammogram measurements. The maximum capacity value obtained was 265 mAh g?1 at rate C/6 and the capacity decrease was recorded by 1.5% after 30 cycles. The values of the hydrogen diffusion coefficient DH obtained through cyclic volammogram and chronoamperometric techniques were, respectively, 7.01 × 10?8 cm2 s?1 and 4.23 × 10?11 cm2 s?1. |
| Keywords: | Metal hydrides Intermetallic compounds Ploy-substituted Hydrogen diffusion coefficient |
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