Abstract: A tank for storing hydrogen by absorption in a hydrogen storage material, including: a chamber; a hydrogen supplier to supply hydrogen into the chamber and/or collect hydrogen in the chamber; an inner structure for storing hydrogen storage material, the inner structure including at least two cups, each cup including a base, a side wall, and a closing element forming a volume impermeable to the hydrogen storage material, at least part of each cup being permeable to hydrogen, and the inner structure including a passage provided at least between part of an outer face of the side wall of the cup and an inner face of the chamber.

Abstract: A material for storing hydrogen is prepared by a method including an extreme plastic deformation operation selected from cold-rolling, quick-forging and extrusion-bending performed on a metallic material selected from among a metal and an alloy containing said metal, or on a compound containing a metal material selected from among a metal and an alloy containing said metal and to which a hydride of said metal or a hydride of said alloy has been added. When the extreme plastic deformation operation is carried out on the metallic material, it is followed by an operation of adding, to the metal material, a hydride of said metal or a hydride of said alloy, as well as by a dispersing operation.

Abstract: The present invention relates to a tank for storing and withdrawing hydrogen by means of a reversible hydriding/dehydriding reaction, said tank consisting of a thermally insulated chamber that includes a plurality of elements (2) for storing hydrogen in the form of hydrides, each element having at least one surface for exchange with the gaseous hydrogen and at least one heat exchange surface, characterized in that it further comprises a plurality of heat storage elements (3) for preserving and releasing the heat that is associated with the reversible hydriding/dehydriding reaction.