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Nogita K.,University of Queensland | McDonald S.D.,University of Queensland | Duguid A.,Hydrexia | Tsubota M.,Physonit Inc. | Gu Q.F.,Australian Synchrotron
Journal of Alloys and Compounds | Year: 2013

The hypo-eutectic Mg-Mg2Ni system can be modified by trace elemental additions of Na which change the microstructure and the functional properties of the alloy. The modified microstructure results in improvements to the hydrogen storage properties. In alloys of optimal composition, it has been shown that the reversible storage of 6.5-7 wt% H2 is possible at a rate of reaction that is realistic for industrial applications. This research investigates the release of H2 in air under atmospheric pressure as well as under 0.2 MPa atmospheres of Ar, CO2, N2, and H2. The release kinetics were characterised using in situ crystallographic phase transformation analysis obtained by synchrotron Powder X-ray diffraction (PXRD) at the Australian Synchrotron. The mole fraction of MgH2, Mg, Mg2Ni, and Mg2NiH4 was determined by Rietveld refinement using RIETAN-FP. It was found that the hydrogen release temperature largely depends on the atmosphere. © 2013 Elsevier B.V. All rights reserved.


Patent
Hydrexia | Date: 2011-02-23

A hydrogen vessel comprising a fluid communication port, an outer vessel and an inner compartment. The inner vessel contains a hydrogen storage material, such as a metal hydride. In one embodiment the inner vessel is mechanically isolated from the outer vessel. The separation between the outer and inner vessel provides a peripheral volume between each vessel. The peripheral volume about the inner compartment may be fluidly isolated from the inner compartment. The hydrogen storage unit further includes a fluid pressure device in communication with the peripheral volume; and a controller for controlling the fluid pressure device during desorption and absorption.


Patent
Hydrexia | Date: 2010-02-23

A system for discharging hydrogen from two or more hydrogen storage vessels (


Hydrexia | Entity website

Solid state hydrogen storage Hydrexia uses novel hydride materials to make low pressure hydrogen storage systems with high storage densities that are safer and cost less than existing compressed gas systems


Production facility established for hydrogen storage systems 08 February 2016 The commercialisation of Hydrexias unique hydrogen storage technology has taken another significant step forward with the establishment of a low volume production facility in Queensland, Australia. The 5,000m2 facility in Brisbane is dedicated to the assembly and verification of the modular hydrogen storage vessels ...

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