Hydrogen sorption behavior of CaAl1.5Li0.5
Source abstract
Abstract
The hydrogen sorption properties of an alloy with nominal composition CaAl1.5Li0.5 have been investigated in a pursuit for hydrogen-absorbing Li-containing intermetallics. X-ray analysis of the original alloy indicated a coexistence of three closely related Laves phases. The maximum hydrogen capacity, recorded at about 6 MPa and 300 °C, was approximately 2.5 H atoms per formula unit (f.u.). Pressure-composition (p-c) isotherm measurements were taken in the temperature range between 350 and 450 °C up to pressures of 133 kPa. Thermodynamic parameters are derived for two plateau regions in the p-c isotherms. Analysis of these parameters and supporting evidence from X-ray patterns of hydrogenated and dehydrogenated samples suggest: (a) an initial irreversible disproportionation of the original alloy and (b) subsequent reversible hydrogenations, featuring reversible disproportionations of CaAl2 and LiAl intermetallic compounds. Attempts to form additional Li-containing intermetallics, namely CaAlLi, TiMn2−x Li x (x = 0.2, 0.3, 0.4, 0.6) and TiAl2−x Li x (x = 0.3, 0.5), and to hydrogenate them, are reported in brief.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Hydrogen Storage and Materials · Ammonia Synthesis and Nitrogen Reduction · Superconductivity in MgB2 and Alloys
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (24)
Show source-provided references
1. W.M. Mueller, J.P. Blackledge, G.G. Libowitz, Metal Hydrides (Academic Press, New York, 1968)
2. A.J. McAlister, in Al-Li Binary Diagram, ed. by P. Villars (editor in chief), H. Okamoto, K. Cenzual (section editors). ASM alloy phase diagrams database (ASM International Materials Park, 2015). http://www1.asminternational.org/AsmEnterprise/APD
3. H. Okamoto, in Al-Li Binary Diagram, Li–Pd Binary Diagram, ed. by P. Villars (editor in chief), H. Okamoto, K. Cenzual (section editors). ASM alloy phase diagrams database (ASM International Materials Park, 2015). http://www1.asminternational.org/AsmEnterprise/APD
4. J. Sangster, A.D. Pelton, in Li–Pt Binary Diagram, Li–Rh Binary Diagram, Li–Bi Binary Diagram, ed. by P. Villars (editor in chief), H. Okamoto, K. Cenzual (section editors). ASM alloy phase diagrams database (ASM International Materials Park, 2015). http://www1.asminternational.org/AsmEnterprise/APD
5. J.H. Owen, D. Randall, in Equilibrium and kinetic studies of systems of hydrogen isotopes, lithium hydrides, aluminum and LiAlO2, eds. J.S. Watson, F.W. Wiffen, J.L. Bishop, B.K. Breeden. Proceedings of the International Conference on Radiation Effects and Tritium Technology for Fusion Reactors, Gatlinburg, Tennessee, USA, (1975), pp. 433–457
6. K. Asano, K. Sakaki, X. Liu, E. Akiba, Hydrogenation of CaLi2−x Mg x (0 ≤ x ≤ 2) with C14 Laves phase structure. J. Alloys Compd. 482, L18–L21 (2009)10.1016/j.jallcom.2009.03.191 ↗
7. O.M. Lovvik, S.M. Opalka, H.W. Brinks, B.C. Hauback, Crystal structure and thermodynamic stability of the lithium alanates LiAlH4 and Li3AlH6. Phys. Rev. B 69, 134117 (2004)10.1103/PhysRevB.69.134117 ↗
8. X. Liu, K. Asano, N. Terashita, E. Akiba, Hydrogenation of C14 Laves phase alloy: CaLi2. Int. J. Hydrog. Energy 34, 1472–1475 (2009)10.1016/j.ijhydene.2008.12.011 ↗
9. Y. Sakamoto, R. Nakamura, M. Ura, Hydrogen solubility in PdLi0.94 and Pd2Li1.04 compounds. J. Alloys Compd. 231, 533–536 (1995)10.1016/0925-8388(95)01858-1 ↗
10. G.M. Zatorska, V.V. Pavlyuk, V.M. Davydov, Phase equilibria and crystal structure of compounds in the Zr–Li–Al system at 470 K. J. Alloys Compd. 333, 138–142 (2002)10.1016/S0925-8388(01)01700-5 ↗
11. R. Nesper, G.J. Miller, A covalent view of chemical bonding in laves phases CaLi x Al2−x . J. Alloys Compd. 197, 109–121 (1993)10.1016/0925-8388(93)90628-Z ↗
12. K. Giza, W. Iwasieczko, V.V. Pavlyuk, H. Bala, H. Drulis, L. Adamczyk, Hydrogen absorption and corrosion resistance of LaNi4.8Al0.2 and LaNi4.8Al0.1Li0.1 alloys. J. Alloys Compd. 429, 352–356 (2007)10.1016/j.jallcom.2006.07.041 ↗
13. J.C. Achard, A. Percheron-Guegan., H. Diaz, F. Briaucourt, F. Demany, in 2nd International Congress on Hydrogen in Metals, Paris (1977), p. 1E12
14. H. Diaz, A. Percheron-Guegan, J.C. Achard, C. Chatillon, J.C. Mathieu, Thermodynamic and structural properties of LaNi5−yAly compounds and their related hydrides. Int. J. Hydrog. Energy 4, 445–454 (1979)10.1016/0360-3199(79)90104-6 ↗
15. M.H. Mendelssohn, D.M. Gruen, A.E. Dwight, LaNi5−x Al x is a versatile alloy system for metal hydride applications. Nature 269, 45–47 (1977). (London)10.1038/269045a0 ↗
16. D.N. Harries, M. Paskevicius, D.A. Sheppard, T.E.C. Price, C.E. Buckley, Concentrating solar thermal heat storage using metal hydrides. Proc. IEEE 100, 539–549 (2012)10.1109/JPROC.2011.2158509 ↗
17. D.A. Sheppard, C. Corgnale, B. Hardy, T. Motyka, R. Zidan, M. Paskevicius, C.E. Buckley, Hydriding characteristics of NaMgH2F with preliminary technical and cost evaluation of magnesium-based metal hydride materials for concentrating solar power thermal storage. RSC Adv 4, 26552–26562 (2014)10.1039/C4RA01682C ↗
18. I. Jacob, D. Shaltiel, The influence of Al on the hydrogen sorption properties of intermetallic compounds, in Hydrogen Energy Systems, vol. 3, ed. by T.N. Veziroglu, W. Seifritz (Pergamon, New York, 1979), p. 1689
19. E. Veleckis, Application of the hydrogen titration method to a thermodynamic investigation of solid Al–Ca alloys. J. Less Common Met. 80, 241–245 (1981)10.1016/0022-5088(81)90098-9 ↗
20. T. Gamo, Y. Moriwaki, N. Yanagihara, T. Yamashita, T. Iwaki, in Proceedings of the 3rd World Hydrogen Energy Conference, Tokyo, (1981), p. 2127. 23–26 June 1980
21. I. Jacob, M. Bereznitsky, D. Mogilyanski, In pursuit of light intermetallic hydrides. J. Alloys Compd. 645, S524–S528 (2015)10.1016/j.jallcom.2014.11.068 ↗
22. H.B. Peacock Jr, N.C. Iyer, M.R. Louthan Jr, Materials considerations in accelerator targets. AIP Conf. Proc. 346, 495–504 (1995)10.1063/1.49124 ↗
23. E. Veleckis, Thermodynamic investigation of the Li-Al and Li-Pb Systems by the hydrogen titration method. J. Less Comm. Met. 73, 49–60 (1980)10.1016/0022-5088(80)90342-2 ↗
24. P. Javadian, D.A. Sheppard, T.R. Jensen, C.E. Buckley, Destabilization of lithium hydride and the thermodynamic assessment of the Li-Al-H system for solar thermal energy storage (to be submitted)