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

L. Z. Ouyang; L. Yao; X. S. Yang; L. Q. Li; M. Zhu

doi:10.1016/j.ijhydene.2009.12.018

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

L. Z. Ouyang, L. Yao, X. S. Yang, L. Q. Li, M. Zhu

College of Materials Science and Engineering

South China University of Technology

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

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, Mg ₃MmNi_0.1 and Mg₃MmNi_0.1Co _0.1 alloys have been also investigated. The maximum hydrogen storage content of Mg₃Mm, Mg₃MmNi_0.1 and Mg ₃MmNi_0.1Co_0.1 alloys was improved due to that the addition of Ni and/or Co further spurred the MmH₃ phase transforming to MmH₂ phase. 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 language	English
Pages (from-to)	8275-8280
Number of pages	6
Journal	International Journal of Hydrogen Energy
Volume	35
Issue number	15
DOIs	https://doi.org/10.1016/j.ijhydene.2009.12.018
State	Published - Aug 2010

Keywords

Kinetics
Magnesium-based hydrogen storage materials
Rare-earth
Thermodynamics

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10.1016/j.ijhydene.2009.12.018

Cite this

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title = "The effects of Co and Ni addition on the hydrogen storage properties of Mg3Mm",

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, Mg 3MmNi0.1 and Mg3MmNi0.1Co 0.1 alloys have been also investigated. The maximum hydrogen storage content of Mg3Mm, Mg3MmNi0.1 and Mg 3MmNi0.1Co0.1 alloys was improved due to that the addition of Ni and/or Co further spurred the MmH3 phase transforming to MmH2 phase. 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.",

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T1 - The effects of Co and Ni addition on the hydrogen storage properties of Mg3Mm

AU - Ouyang, L. Z.

AU - Yao, L.

AU - Yang, X. S.

AU - Li, L. Q.

AU - Zhu, M.

PY - 2010/8

Y1 - 2010/8

N2 - 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, Mg 3MmNi0.1 and Mg3MmNi0.1Co 0.1 alloys have been also investigated. The maximum hydrogen storage content of Mg3Mm, Mg3MmNi0.1 and Mg 3MmNi0.1Co0.1 alloys was improved due to that the addition of Ni and/or Co further spurred the MmH3 phase transforming to MmH2 phase. 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.

AB - 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, Mg 3MmNi0.1 and Mg3MmNi0.1Co 0.1 alloys have been also investigated. The maximum hydrogen storage content of Mg3Mm, Mg3MmNi0.1 and Mg 3MmNi0.1Co0.1 alloys was improved due to that the addition of Ni and/or Co further spurred the MmH3 phase transforming to MmH2 phase. 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.

KW - Kinetics

KW - Magnesium-based hydrogen storage materials

KW - Rare-earth

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