The effects of Co and Ni addition on the hydrogen storage properties of Mg3Mm

L. Z. Ouyang, L. Yao, Xusheng Yang, L. Q. Li, M. Zhu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)

Abstract

The effects of Ni and Co addition on the hydrogen storage properties of Mg3Mm alloy was studied by X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX) and pressure-composition isotherm (PCI) measurement. The hydrogen absorption kinetics and the thermodynamic parameters (apparent ΔH, ΔS) for Mg3Mm dehydrogenation reactions in Mg3Mm, Mg3MmNi0.1and Mg3MmNi0.1Co0.1alloys have been also investigated. The maximum hydrogen storage content of Mg3Mm, Mg3MmNi0.1and Mg3MmNi0.1Co0.1alloys was improved due to that the addition of Ni and/or Co further spurred the MmH3phase transforming to MmH2phase. On the other side, the kinetics curves show the addition of Co could enhance hydrogen absorption rate while the addition of Ni change the hydrogenation reaction mechanism.
Original languageEnglish
Pages (from-to)8275-8280
Number of pages6
JournalInternational Journal of Hydrogen Energy
Volume35
Issue number15
DOIs
Publication statusPublished - 1 Aug 2010
Externally publishedYes

Keywords

  • Kinetics
  • Magnesium-based hydrogen storage materials
  • Rare-earth
  • Thermodynamics

ASJC Scopus subject areas

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

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