Electrochemical preparation process of Mg-La alloys for solid hydrogen Storage

Mounir Sahli (1) , Khaled Chetehouna (2) , Francois Faubert (3) , Nadir Bellel (1) , Nicolas Gascoin (4, 1)

1 INSA CVL - Institut National des Sciences Appliquées - Centre Val de Loire
2 F2ME
3 GREMI - Groupe de recherches sur l'énergétique des milieux ionisés
4 PRISME - Laboratoire Pluridisciplinaire de Recherche en Ingénierie des Systèmes, Mécanique et Energétique

Magnesium and its alloys have a wide potential of application and development in marine, automotive, opto-electronic and hydrogen storage materials [1-3]. During the last years, the addition of rare-earth elements (RE=La, Nd, Y…) to Mg has received considerable attention [4,5]. Indeed, adding rare-earth elements improves the corrosion resistance, the creep and shear strengths as well as the hydrogen storage capacity. The objective of our study resides on decreasing the temperature of hydrogen desorption by a structural modification of the material in order to foster the desorption of hydrogen. Our work is based in particular on the electrochemical preparation process of Magnesium-Lanthanum alloys on a metallic cathode. For this purpose, a certain number of parameters were studied: the nature of the electrolyte, the nature of the cathode, the voltage and electrolysis time. In this paper, we investigate the effect of voltage on Magnesium-Lanthanum alloys prepared using a solution of Magnesium chloride (MgCl2.6H2O) and Lanthanum(III) Nitrate (La(NO3)3.6H2O) as electrolyte and a copper plate as cathode.

Domaines: Chimie analytique; Génie des procédés; Milieux fluides et réactifs; Mécanique des fluides [physics.class-ph]

Mounir Sahli, Khaled Chetehouna, Francois Faubert, Nadir Bellel, Nicolas Gascoin. Electrochemical preparation process of Mg-La alloys for solid hydrogen Storage. Nanotech MEET Tunisia 2014, International Conference, 24-26 April 2014, Hammamet, Tunisia, 2014, Hammamet, Tunisia. ⟨hal-01253372⟩