Study of Mg-M (M = Co, Ni and Fe) mixture elaborated by reactive mechanical alloying - hydrogen sorption properties

J. L. Bobet, E. Akiba, Y. Nakamura, B. Darriet

Research output: Contribution to journalArticle

229 Citations (Scopus)

Abstract

Reactive mechanical alloying (MA in H2) of magnesium powder allowed us to obtain a partial conversion of Mg to MgH2. The ratio MgH2/Mg can be improved by increasing the milling time or by adding a 3 d-element (with the same initial particle size). X-ray diffraction was applied successfully to determine the quantity of MgH2 formed. The RMA allows us to eliminate the activation procedure generally requested for magnesium. The hydriding results from the combination of two steps: nucleation at first and then diffusion. A direct relationship exists between the nucleation duration and the specific surface area. It is demonstrated that RMA for a short time (2 h) is an effective way to strongly improve the hydrogen storage properties of both magnesium and (Mg+10 wt.% Co, Ni or Fe) mixtures.

Original languageEnglish
Pages (from-to)987-996
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume25
Issue number10
DOIs
Publication statusPublished - Oct 1 2000

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Mechanical alloying
sorption
alloying
Magnesium
Sorption
magnesium
Nucleation
Magnesium powder
Hydrogen
Hydrogen storage
hydrogen
Specific surface area
nucleation
Chemical activation
Particle size
X ray diffraction
activation
diffraction
x rays

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Study of Mg-M (M = Co, Ni and Fe) mixture elaborated by reactive mechanical alloying - hydrogen sorption properties. / Bobet, J. L.; Akiba, E.; Nakamura, Y.; Darriet, B.

In: International Journal of Hydrogen Energy, Vol. 25, No. 10, 01.10.2000, p. 987-996.

Research output: Contribution to journalArticle

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