DOIONLINE

DOIONLINE NO - IJASEAT-IRAJ-DOIONLNE-14319

Publish In
International Journal of Advances in Science, Engineering and Technology(IJASEAT)-IJASEAT
Journal Home
Volume Issue
Issue
Volume-6, Issue-4, Spl. Iss-1  ( Nov, 2018 )
Paper Title
Hydrogen Uptake of Mechanically Milled LaNi5-MWCNTs Nanocomposite
Author Name
Sami Ullah Rather
Affilition
Department of Chemical and Materials Engineering, King Abdulaziz University, P.O. Box 80204, Jeddah 21589, Saudi Arabia
Pages
86-89
Abstract
LaNi5-MWCNTs nanocomposite was prepared by high-energy ball milling and their hydrogen storage capacity properties were studied by employing Sievert’s volumetric instrument. Crystal structure, thermal stability, quantity, and nanostructured characterization of pristine and composite samples were performed by X-ray diffraction pattern, thermogravimetric and differential thermal analysis, field emission scanning and transmission electron microscopy methods. Channel and pore blocking of MWCNTs by LaNi5 during synthesis method explains reduction of surface area of composite. Hydrogen uptake of commercial LaNi5, pristine MWCNTs, and LaNi5-MWCNTs nanocomposite was found to be 1.49, 0.07, and 1.53 wt.% measured at RT and hydrogen pressure of 4.0 MPa. Ball milling process and addition of MWCNTs to LaNi5 alloy proved to be very critical to improve kinetics. Keywords - Ball milling, Hydrogen storage; Nanocomposite; Crystal structure; Kinetics
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