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 structurebased 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.
参考文献
| [1] | Huang T Z;Wu Z;Yu X B et al.Hydrogen absorption-desorption behavior of zirconium-substituting Ti-Mn based hydrogen storage alloys[J].Intermetallics,2004,12:91. |
| [2] | Liu B H;Kim D M;Lee K Y et al.Hydrogen storage properties of TiMn2-based alloys[J].Journal of Alloys and Compounds,1996,240:214. |
| [3] | Klyamkin S N;Verbetsky V N;Demidov V A .Thermodynamicsof hydride formation and decomposition for TiMn2-H2 system at pressure up to 2000 atm[J].Journal of the Less Common Metals,1994,205:L1. |
| [4] | Au M;Pourarian F;Sankar S G et al.TiMn2-based alloys as high hydrogen storage materials[J].Material Science and Engineering,1995,B33:53. |
| [5] | Bobet J L;Darriet B .Relationship between hydrogen sorption properties and crystallography for TiMn2 based alloys[J].International Journal of Hydrogen Energy,2000,25:767. |
| [6] | Oesterreicher H;Bitter H .Studies of hydrogen formation in Ti1-xZrxMn2[J].Materials Research Bulletin,1978,13:83. |
| [7] | Jacob I;Stern A;Moran A et al.Hydrogen absorption in(ZrxTi1-x)B2(B≡Cr,Mn)and the phenomenological model for the absorption capacity in pseudo-binary Laves-phase compounds[J].Journal of the Less Common Metals,1980,73:369. |
| [8] | Kisi E H;Buckley C E;Gray E M .The hydrogen activationof LaNi5[J].Journal of Alloys and Compounds,1992,185:369. |
| [9] | Lundin C E;Lynch F E;Magee C B .A correlation between the interstitial hole sizes in intermetallic compounds and the thermodynamic properties of the hydrides formed from those compounds[J].Journal of the Less Common Metals,1977,56:19. |
| [10] | Ivey D G;Northwood D O .Storing energy in metal hydrides:a review of the physical metallurgy[J].Journal of Materials Science,1983,18:321. |
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