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Effect of LaNi 3 Amorphous Alloy Nanopowders on the Performance and Hydrogen Storage Properties of MgH 2

Author

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  • M. Sherif El-Eskandarany

    (Nanotechnology and Advanced Materials Program, Energy and Building Research, Center, Kuwait Institute for Scientific Research, Safat 13109, Kuwait)

  • Maryam Saeed

    (Nanotechnology and Advanced Materials Program, Energy and Building Research, Center, Kuwait Institute for Scientific Research, Safat 13109, Kuwait)

  • Eissa Al-Nasrallah

    (Nanotechnology and Advanced Materials Program, Energy and Building Research, Center, Kuwait Institute for Scientific Research, Safat 13109, Kuwait)

  • Fahad Al-Ajmi

    (Nanotechnology and Advanced Materials Program, Energy and Building Research, Center, Kuwait Institute for Scientific Research, Safat 13109, Kuwait)

  • Mohammad Banyan

    (Nanotechnology and Advanced Materials Program, Energy and Building Research, Center, Kuwait Institute for Scientific Research, Safat 13109, Kuwait)

Abstract

Due to its affordable price, abundance, high storage capacity, low recycling coast, and easy processing, Mg metal is considered as a promising hydrogen storage material. However, the poor de/rehydrogenation kinetics and strong stability of MgH 2 must be improved before proposing this material for applications. Doping MgH 2 powders with one or more catalytic agents is one common approach leading to obvious improving on the behavior of MgH 2 . The present study was undertaken to investigate the effect of doping MgH 2 with 7 wt% of amorphous(a)-LaNi 3 nanopowders on hydrogenation/dehydrogenation behavior of the metal hydride powders. The results have shown that rod milling MgH 2 with a-LaNi 3 abrasive nanopowders led to disintegrate microscale-MgH 2 powders to nanolevel. The final nanocomposite product obtained after 50 h–100 h of rod milling revealed superior hydrogenation kinetics, indexed by short time (8 min) required to absorb 6 wt% of H 2 at 200 °C/10 bar. At 225 °C/200 mbar, nanocomposite powders revealed outstanding dehydrogenation kinetics, characterized by very short time (2 min) needed to release 6 wt% of H 2 . This new tailored solid-hydrogen storage system experienced long cycle-life-time (2000 h) at 225 °C without obeying to sever degradation on its kinetics and/or storage capacity.

Suggested Citation

  • M. Sherif El-Eskandarany & Maryam Saeed & Eissa Al-Nasrallah & Fahad Al-Ajmi & Mohammad Banyan, 2019. "Effect of LaNi 3 Amorphous Alloy Nanopowders on the Performance and Hydrogen Storage Properties of MgH 2," Energies, MDPI, vol. 12(6), pages 1-15, March.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:6:p:1005-:d:214037
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    References listed on IDEAS

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