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Marwan, Farhanah
Institut Teknologi Sepuluh Nopember, Surabaya
Computer Science & IT

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The Effects of Mechanical Milling and Nb-Based Additives on the Kinetics Sorption Properties of 2LiBH4-MgH2 Marwan, Farhanah; Janot, Raphaël; Chotard, Jean-Noël
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2015i1.1037

Abstract

In this work, the effects of ball milling with different catalysts (including NbF5 and Nb2O5) on the hydrogen storage properties of 2LiBH4-MgH2 system were investigated. The increase of ball-milling time (from 5 min to 24 h) can reduce the crystallites size of MgH2 from 74 nm to 14 nm and decrease the dehydrogenation temperature of MgH2 from 390°C to 345°C. Among Nb-based catalysts, sample with NbF5 shows slightly better sorption kinetics than the one with Nb2O5, it can store reversibly about 9 wt.% of H2 in 24 h at 350°C, whereas more than 60 h are needed with Nb2O5 . This indicates that NbF5 is superior to Nb2O5 for improving the sorption kinetics of 2LiBH4-MgH2 system.
Co-Authors Chotard, Jean-Noël Janot, Raphaël