The Mg/MAX-phase composite for hydrogen storage |
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Affiliation: | G.V. Kurdyumov Institute for Metal Physics of N.A.S. of Ukraine, 36 Academician Vernadsky Boulevard, UA-03142, Kyiv, Ukraine |
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Abstract: | The Mg/MAX-phase composite materials are synthesized by reactive ball milling (RBM) in a hydrogen gas atmosphere, and phase composition and dehydrogenation performance of the composites are investigated. The Ti3AlC2 MAX-phase markedly reduces the dehydrogenation temperature of the MgH2 to 246 °C for the sample with 5 wt% of Ti3AlC2 MAX-phase and to 236 °C for the sample with 7 %wt. of Ti3AlC2 MAX-phase. The highest hydrogen capacity of 5.6 wt% was achieved for the Mg+7 wt% MAX-phase composite. The kinetic mechanism of the dehydrogenation of the composites is investigated by the Johnson-Mehl-Avrami-Kolmogorov (JMAK) technique. |
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Keywords: | Hydrogen storage Mg/MAX-phase composite MAX-phase Reactive ball milling |
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