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The activation behaviors and hydrogen storage properties of the Laves phase Ti1-xZrx(Mn0.5Cr0.5)2 (x=0, 0.1, 0.2, 0.32, 0.5) alloys were investigated by the pressure-composition-temperature (P-C-T) measurements. All the studied alloys show the single C14-type Laves phase structure based on the XRD data. Except for the alloys with very low Zr content of x=0 and x=0.1, all these alloys can be fully activated. The P-C isotherms of the activated alloys show that, the introduction of Zr induces the decrease of the equilibrium pressures and the steeper plateaus. As the x increases, the maximum hydrogen absorption also increases, whereas the desorption of hydrogen decreases. These two effects result in a maximum reversible hydrogen storage capacity of H/M=3.03 for the alloy at x=0.32. Furthermore, the well-defined plateau associated with the smallest hysteresis also appears at x=0.32.
The activation behaviors and hydrogen storage properties of the Laves phase Ti1-xZrx (Mn0.5Cr0.5) 2 (x = 0, 0.1, 0.2, 0.32, 0.5) were investigated by the pressure- composition- temperature (PCT) All the studied alloys show the single C14-type Laves phase structure based on the XRD data. Except for the alloys with very low Zr content of x = 0 and x = 0.1, all these alloys can be fully activated. The PC isotherms of the activated alloys show that, the introduction of Zr induces the decrease of the equilibrium pressures and the steeper plateaus. As the x increases, the maximum hydrogen absorption also increases, and the desorption of hydrogen decreases. capacity of H / M = 3.03 for the alloy at x = 0.32. Furthermore, the well-defined plateau associated with the smallest hysteresis also appears at x = 0.32.