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Effects of carbon black, graphite and carbon nanotube additives on hydrogen storage properties of magnesium

Journal Article


Abstract


  • The effects of different carbon additives: carbon black, graphite and multi-walled carbon nanotubes, on the hydrogen storage properties of magnesium were investigated and compared. Samples of Mg containing 5 wt.% additive were prepared by milling in hydrogen gas using a magnetically controlled ball mill. Structural and phase evolution were investigated using X-ray diffractometry (XRD) and morphology and microchemistry by scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS). Raman spectroscopy was used to investigate changes in the nature of carboncarbon bonding, differential scanning calorimetry (DSC) to investigate desorption characteristics, and thermogravimetry (TG) to estimate the hydrogen storage capacity of both milled and rehydrogenated samples. There was no significant difference in the hydrogen storage capacity between the as-prepared (6.4 wt.%) and rehydrogenated (6.2 wt.%) composites, however, the rehydrogenated composite containing graphite displayed a remarkable decrease in the desorption temperature, a result which wants further investigation.

Publication Date


  • 2007

Citation


  • Huang, Z., Guo, Z., Calka, A., Wexler, D. & Liu, H. K. 2007, 'Effects of carbon black, graphite and carbon nanotube additives on hydrogen storage properties of magnesium', Journal of Alloys and Compounds, vol. 427, no. 1-2, pp. 94-100.

Scopus Eid


  • 2-s2.0-34548667488

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/3984

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 94

End Page


  • 100

Volume


  • 427

Issue


  • 1-2

Abstract


  • The effects of different carbon additives: carbon black, graphite and multi-walled carbon nanotubes, on the hydrogen storage properties of magnesium were investigated and compared. Samples of Mg containing 5 wt.% additive were prepared by milling in hydrogen gas using a magnetically controlled ball mill. Structural and phase evolution were investigated using X-ray diffractometry (XRD) and morphology and microchemistry by scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS). Raman spectroscopy was used to investigate changes in the nature of carboncarbon bonding, differential scanning calorimetry (DSC) to investigate desorption characteristics, and thermogravimetry (TG) to estimate the hydrogen storage capacity of both milled and rehydrogenated samples. There was no significant difference in the hydrogen storage capacity between the as-prepared (6.4 wt.%) and rehydrogenated (6.2 wt.%) composites, however, the rehydrogenated composite containing graphite displayed a remarkable decrease in the desorption temperature, a result which wants further investigation.

Publication Date


  • 2007

Citation


  • Huang, Z., Guo, Z., Calka, A., Wexler, D. & Liu, H. K. 2007, 'Effects of carbon black, graphite and carbon nanotube additives on hydrogen storage properties of magnesium', Journal of Alloys and Compounds, vol. 427, no. 1-2, pp. 94-100.

Scopus Eid


  • 2-s2.0-34548667488

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/3984

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 94

End Page


  • 100

Volume


  • 427

Issue


  • 1-2