Effects of the preparative parameters of hydriding combustion synthesis on the properties of Mg-Ni-C as hydrogen storage material

Muralidhar Chourashiya*, Dong Cheol Yang, Choong Nyeon Park, Chan Jin Park

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Magnesium may be the most promising solid-state hydrogen storage material owing to its high storage capacity (7.6 wt%) and highest volumetric density (2 times of liquid H2). On the other hand, suffers from its sluggish absorption/desorption characteristics. In the present study, the simple/cost-effective hydriding combustion synthesis (HCS) was used to prepare highly-active Mg-based-samples. The preparative parameters of HCS were varied, and its effects on the micro-structural and hydrogen storage properties were determined. The results and its analysis showed that the simple HCS process possesses a multifaceted dependence on a range of experimental factors and affect the final product. The estimated dependence enabled us to explain the combined effect of individual experimental factors on the prepared samples. The Mg-Ni-C sample prepared at 610°C with 6%wt-nano-Ni and 4 wt%-multi-walled-CNTs as reactants, resulted in sample with a surface area as high as 19.01 m2/g and a desorption capacity of 5.77 wt%, highlighting the promising characteristics of HCS to prepare highly-active Mg-based-materials.

Original languageEnglish
Pages (from-to)4238-4245
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume37
Issue number5
DOIs
StatePublished - Mar 2012
Externally publishedYes

Keywords

  • β-MgH
  • Hydriding combustion
  • Hydrogen storage
  • Mg-based materials

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