Hydrogen Storage Properties of Ball Milled MgH with Additives- Ni, V and Activated Carbons Obtained from Different By-Products.

The hydrogen sorption of materials based on 80 wt.% MgH with the addition of 15 wt.% Ni or V and 5 wt.

Facilitated Synthesis of MgNi Based Composites with Attractive Hydrogen Sorption Properties.

Composites based on MgNi with 5% activated carbon from apricot stones (ACAP) have been prepared by ball milling and subsequent annealing in hydrogen atmosphere. The purpose of the primary metal (Mg, Ni, and V) milling was to reduce the particle size and achieve a good contact between them, without forming intermetallic compounds. During hydriding/dehydriding at 300 °C the amount of the MgNi phase progressively increased, and after 10 cycles about 50% Mg(Ni,V) was achieved.