Microstructure and Hydrogen Storage Performance of Ball-Milled MgH 2 Catalyzed by FeTi

Ádám Révész (), Roman Paramonov, Tony Spassov and Marcell Gajdics
Additional contact information
Ádám Révész: Department of Materials Physics, Eötvös Loránd University, H-1518 Budapest, Hungary
Roman Paramonov: Department of Materials Physics, Eötvös Loránd University, H-1518 Budapest, Hungary
Tony Spassov: Department of Chemistry, University of Sofia “St. Kl. Ohridski”, 1164 Sofia, Bulgaria
Marcell Gajdics: Department of Materials Physics, Eötvös Loránd University, H-1518 Budapest, Hungary

Energies, 2023, vol. 16, issue 3, 1-14

Abstract: A high-energy ball-milling method was applied for different milling times (1 h, 3 h, and 10 h) to synthetize nanocrystalline MgH 2 powder samples catalyzed by Fe 2 Ti. Morphology and microstructure of the powders were characterized by scanning electron microscopy and X-ray diffraction. The recorded diffraction profiles were evaluated by the convolutional multiple whole profile fitting algorithm, in order to determine microstructural parameters of the composites, such as average crystallite size and average dislocation density. Differential scanning calorimetry was performed to investigate the dehydrogenation characteristics of the alloys. It was obtained that there exists an optimal milling time (3 h) when desorption occurs at the lowest temperature. X-ray diffraction of partially dehydrided states confirmed a two-step H-release, including the subsequent desorption of γ-MgH 2 and α-MgH 2 . The effect of milling time on the H-sorption performance was investigated in a Sievert-type apparatus. The best overall hydrogenation performance was obtained for the composite milled for 3 h.

Keywords: ball-milling; magnesium; FeTi catalyst; hydrogen storage (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/16/3/1061/pdf (application/pdf)
https://www.mdpi.com/1996-1073/16/3/1061/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:16:y:2023:i:3:p:1061-:d:1039613

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().