Year: 2025
Type: article
Abstract: Magnesium hydride (MgH 2 ) is an attractive and widely researched hydrogen storage material because of its high hydrogen capacity and lower cost of production coupled with the availability of Mg. However, higher desorption temperature and sluggish kinetics are the limitations of widespread use of MgH 2 as hydrogen storage material. The present study deals with the effect of the addition of Ni on the dehydrogenation behavior of as-synthesized MgH 2 from coarse commercial-grade magnesium powder (purity 99.8%). Optimization of the process parameters for the conversion of Mg powder to MgH 2 in bulk quantity and characterization of MgH 2 were carried out . Mg 2 NiH 4 phase could be formed by ball milling in planetary ball mill of as-synthesized MgH 2 and Ni powder. Thermal analyses such as TG–DTA, DSC, and pressure–composition isotherms were used to understand the dehydrogenation behavior of MgH 2 and MgH 2 –Ni. The release of hydrogen was found to start from 220 °C for MgH 2 –Ni by the combined action of the addition of Ni in MgH 2 and particle size reduction because of ball milling.
Institution: Bhabha Atomic Research Centre
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,790
Funder: Bhabha Atomic Research Centre
OpenAlex ID: W4417303500