Characterization of hydrogen storage alloy Mg2Co synthesized by bulk mechanical alloying

Y. J. Wang, T. Aizawa, C. Nishimura

Research output: Contribution to journalArticle

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Abstract

Mg2Co was successfully synthesized by the solid-state reaction from Mg and Co powder mixture via bulk mechanical alloying (BMA) and annealing. The sample was analyzed by X-ray powder diffraction (XRD), differential scanning calorimetry (DSC) and differential thermal analysis (DTA). Hydrogen absorption and desorption behavior was described by pressure-compositionisotherms (PCT). In the temperature range of 633K there are two plateau pressures in the pressure region of 0.6~3MPa in the absorption isotherms and only one plateau pressure in the desorption isotherms. XRD patterns of the alloy hydrides revealed the presence of Mg2CoH5.

Original languageEnglish
Pages (from-to)343-346
Number of pages4
JournalJournal of Metastable and Nanocrystalline Materials
Volume24-25
DOIs
Publication statusPublished - 2005
Externally publishedYes

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Keywords

  • Bulk mechanical alloying
  • Hydrogen storage alloys
  • Solid-sate synthesis

ASJC Scopus subject areas

  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Condensed Matter Physics

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