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conferenceseries .com
November 13-15, 2017 | Las Vegas, USA
14th International Conference and Exhibition on
Materials Science and Engineering
RRJOMS | Volume 5 | Issue 7 | November, 2017
Hydrogen storage characteristics of nanostructured La0.75Ce0.25Ni5 alloy grinded by sonication process
Shrok Allami and Mutawer Redah
Ministry of Science and Technology, Iraq
La0.75Ce0.25Ni 5 alloy was purchased from Whole Win (Beijing) Materials Sci and Tech. com., Ltd. The nanocrystalline alloy was
obtained by grinding the alloy powder in sonicatore under different periods. Particle size distribution, surface morphology
and structure were studied by laser diffraction, SEM and XRD respectively. The surface area measured by BTU method. The
hydrogen storage properties were examined by PCT measurement. The enthalpy (ΔH) and entropy (ΔS) of the alloy indicate that the
thermodynamic performance of the nanocrystalline alloy is improved by increasing surface area and diffusion ability of hydrogen in
the nanocrystalline microstructure. Short diffusion path of hydrogen in the nanocrystalline microstructure, resulting in better overall
hydrogen storage properties, improved the hydrogenation-dehydrogenation reactions of the nanocrystalline alloy. The obtained
hydrogen storage capacity was 4.23% (mass fraction), and the amount of hydrogen desorption was 3.74%.
Biography
Shrok Allami is a scientific researcher in ministry of science and technology/ renewable energy directory/ department of hydrogen and biofuel. She has completed her PhD
at 2007 from University Technology, Iraq. She has published more than25 papers in reputed journals, participates at more than 16 national and international conferences
as researcher and at their comities, and has been serving as an editorial board member in Iraqi scientific journals.
Shrok Allami et al., Res. Rev. J Mat. Sci. 2017, 5:7
DOI: 10.4172/2321-6212-C1-011