Title

Improvement in hydrogen cycling properties of magnesium through added graphite

RIS ID

17173

Publication Details

Huang, Z., Guo, Z., Calka, A., Wexler, D. & Liu, H. K. (2007). Improvement in hydrogen cycling properties of magnesium through added graphite. Materials Letters, 61 (14-15), 3163-3166.

Abstract

Magnesium was milled under hydrogen with three types of carbon allotropes: carbon black, graphite, and multi-walled carbon nanotubes, respectively, using a special low-energy shearing mill. Structural and phase evolution were investigated using X-ray diffractometry (XRD) and morphology was investigated by scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS). Raman spectroscopy was used to investigate the changes in the nature of carboncarbon bonding and differential scanning calorimetry (DSC) to investigate desorption characteristics. A Sieverts-type apparatus was applied to characterize the hydrogen absorption and desorption properties. It was found that graphite not only improved the hydrogen absorption, but also the desorption kinetics.

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.matlet.2006.11.017