Synthesis of NiPS sub(3) and CoPS and its hydrogen storage capacity

Prepared CoPS and NiPS sub(3) are studied as new materials for hydrogen energy storage. Single phase of CoPS and NiPS sub(3) were grown separately in evacuated silicatube via solid state reaction at 650 degree C with controlled heating rate 1 degree C/min. X-ray diffraction patterns confirm the form...

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Bibliographic Details
Published in:Journal of alloys and compounds 2014-03, Vol.588, p.573-577
Main Authors: Ismail, N, Madian, M, El-Meligi, A A
Format: Article
Language:English
Subjects:
Alloys
Diffraction patterns
Evacuation
Hydrogen storage
Hydrogen-based energy
Scanning electron microscopy
Storage capacity
Transmission electron microscopy
X-rays
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Summary:Prepared CoPS and NiPS sub(3) are studied as new materials for hydrogen energy storage. Single phase of CoPS and NiPS sub(3) were grown separately in evacuated silicatube via solid state reaction at 650 degree C with controlled heating rate 1 degree C/min. X-ray diffraction patterns confirm the formation of the desired compounds. Both CoPS and NiPS sub(3) exhibited high thermal stability up to 700 degree C and 630 degree C, respectively. The morphology of the prepared samples was investigated using scanning electron microscopy and folded sheets appeared in the transmission electron microscopy. The samples were exposed to 20 bar applied hydrogen pressure at 80 K. Both compounds appear to have feasible hydrogen storage capacity. CoPS was capable to adsorb 1.7 wt% while NiPS sub(3) storage capacity reached 1.2 wt%.
ISSN:0925-8388
DOI:10.1016/j.jallcom.2013.11.073