Characterising layered structure of MgPS₃ and new application as a hydrogen storage material
by Amin A. El-Meligi; Nahla Ismail; Mahmoud Madian
International Journal of Nanoparticles (IJNP), Vol. 4, No. 4, 2011

Abstract: X-ray diffraction (XRD) pattern exhibits sharp 001 reflections of the MgPS₃ layered material with interlayer gap (d-spacing) of 6.4 Å. Scanning electron microscope (SEM) shows a pattern of conglomerates of layers quite uniform in size, around 100-200 nm. TEM images show homogeneous distribution of nanoparticles of about 60-200 nm in size. These particles tend to be agglomerated in hyperbranched structures. Thermal stability was detected by DSC-TGA, which shows decomposition temperature up to 740°C relying on the rate of heating. Strong peak of ?(PS₃)^2- stretching at 570 cm^?1 of pure MgPS₃ was shown by infrared (IR). New application as a hydrogen storage material is investigated. The average gravimetric capacity is about 16 g H₂/kg of MgPS₂ at 25 bars and cryogenic temperature.

Online publication date: Fri, 13-Mar-2015

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