Materials Science. Non-Equilibrium Phase Transformations.
Vol. 8 (2022), Issue 1, pg(s) 19-21

The effects of graphite additive on hydrogen sorption/desorption behavior by the Mg/C composite

  • 1 G.V. Kurdyumov Institute for Metal Physics N.A.S. of Ukraine, Kyiv, Ukraine

Abstract

The reactive ball milling technique was applied to fabricate the Mg-based composite with graphite additives. The sorption/desorption kinetics of the composites were investigated under isothermal conditions. The best hydrogen sorption/desorption kinetics was attained for the magnesium-carbon composite synthesized using the low surface area graphite powder as an active additive. This sample is characterised by the best kinetics performance compared to other composites. It releases 4.2 wt.% of hydrogen at 270 ºC within ~18 min and uptakes 4.6 wt/.% of hydrogen for ~130 min at 200 ºC.

Keywords

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