The specialised process takes the powdered materials and creates porous metal hydride (PMH); then the treated powder is uniquely sintered and transformed into a solid matrix and inserted into the containment vessel (Hydra-Pak). Hydrogen Introduced to the vessel is readily absorbed. In order to then release the hydrogen a heat source; waste heat, solar energy etc is introduced to the vessel.
The containment vessel holds a novel matrix composite containing the porous metal hydride (PMH). The PMH is created by sintering mixed metal and hydride powder at very high temperature under pressure. This produces the porous compact. The PMH core is inserted into an external metallic skin and then bonded using a low melting alloy. Special bond strength is not required just metallic continuance.
This is a specialised patented procedure, achieving the optimum thermal conductivity properties and unique thermal performance qualities together with dimensional stability.
Only the metal matrix is bonded to the vessel wall. The bonding of the hydride material is absolutely not required as the hydride will expand and contract within the matrix when adsorbing hydrogen.
The micro matrix ensures that the hydride particles are held loosely in a micro porous structure without being practically bonded thereby allowing the pores sufficient volume for the hydride particles to expand and contract during the hydrogen adsorption/desorption cycles.
The matrix provides a highly stable environment for hydrogen preventing any deformation of the vessel.
The micro porous structure can be pictorially described as above with each individual cell holding a little of the PMH material and the tiny amounts of metal discreetly expanding and contracting inside an individual cell.
This prevents material compaction.