A study on crystal structure, bonding and hydriding properties of Ti-Fe-Ni intermetallics - Behind substitution of iron by nickel
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2012
Authors
Ćirić, Katarina D.Kocjan, Andraz
Gradisek, Anton
Koteski, Vasil J.
Kalijadis, Ana
Ivanovski, Valentin N.
Laušević, Zoran
Stojić, Dragica Lj.
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Intermetallic compound TiFe, known for its hydrogen storage applications, is modified by substituting iron by nickel and related changes of properties and applicability of the obtained compounds are studied. Samples TiFe1-xNix (x = 0.2-0.6) are synthesized by melt-spinning and their crystal structure, desorption characteristics and electronic structure are investigated by TPD, H-1 NMR and Mossbauer spectroscopy. State-of-the-art DFT calculations give further insight into the changes in electronic structure and bonding related to the hydrogen absorption and substitution of iron by nickel. The increase of Ni/Fe ratio in the TiFe1-xNix is found to result in the increase of hydride cohesive energies and in the systematic shifting of Fermi energy (E-F) to lower values, in both pure intermetallics and appropriate hydrides. Hydride formation was found to influence the Fermi energy lowering and the increase of number of states at E-F.
Keywords:
metal hydride / Ti-Fe-Ni / DFT / hydrogen storage / melt-spinningSource:
International Journal of Hydrogen Energy, 2012, 37, 10, 8408-8417Funding / projects:
- Investigation of intermetallics and semiconductors and possible application in renewable energy sources (RS-MESTD-Basic Research (BR or ON)-171001)
DOI: 10.1016/j.ijhydene.2012.02.047
ISSN: 0360-3199
WoS: 000305040400034
Scopus: 2-s2.0-84860376240
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VinčaTY - JOUR AU - Ćirić, Katarina D. AU - Kocjan, Andraz AU - Gradisek, Anton AU - Koteski, Vasil J. AU - Kalijadis, Ana AU - Ivanovski, Valentin N. AU - Laušević, Zoran AU - Stojić, Dragica Lj. PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4878 AB - Intermetallic compound TiFe, known for its hydrogen storage applications, is modified by substituting iron by nickel and related changes of properties and applicability of the obtained compounds are studied. Samples TiFe1-xNix (x = 0.2-0.6) are synthesized by melt-spinning and their crystal structure, desorption characteristics and electronic structure are investigated by TPD, H-1 NMR and Mossbauer spectroscopy. State-of-the-art DFT calculations give further insight into the changes in electronic structure and bonding related to the hydrogen absorption and substitution of iron by nickel. The increase of Ni/Fe ratio in the TiFe1-xNix is found to result in the increase of hydride cohesive energies and in the systematic shifting of Fermi energy (E-F) to lower values, in both pure intermetallics and appropriate hydrides. Hydride formation was found to influence the Fermi energy lowering and the increase of number of states at E-F. T2 - International Journal of Hydrogen Energy T1 - A study on crystal structure, bonding and hydriding properties of Ti-Fe-Ni intermetallics - Behind substitution of iron by nickel VL - 37 IS - 10 SP - 8408 EP - 8417 DO - 10.1016/j.ijhydene.2012.02.047 ER -
@article{ author = "Ćirić, Katarina D. and Kocjan, Andraz and Gradisek, Anton and Koteski, Vasil J. and Kalijadis, Ana and Ivanovski, Valentin N. and Laušević, Zoran and Stojić, Dragica Lj.", year = "2012", abstract = "Intermetallic compound TiFe, known for its hydrogen storage applications, is modified by substituting iron by nickel and related changes of properties and applicability of the obtained compounds are studied. Samples TiFe1-xNix (x = 0.2-0.6) are synthesized by melt-spinning and their crystal structure, desorption characteristics and electronic structure are investigated by TPD, H-1 NMR and Mossbauer spectroscopy. State-of-the-art DFT calculations give further insight into the changes in electronic structure and bonding related to the hydrogen absorption and substitution of iron by nickel. The increase of Ni/Fe ratio in the TiFe1-xNix is found to result in the increase of hydride cohesive energies and in the systematic shifting of Fermi energy (E-F) to lower values, in both pure intermetallics and appropriate hydrides. Hydride formation was found to influence the Fermi energy lowering and the increase of number of states at E-F.", journal = "International Journal of Hydrogen Energy", title = "A study on crystal structure, bonding and hydriding properties of Ti-Fe-Ni intermetallics - Behind substitution of iron by nickel", volume = "37", number = "10", pages = "8408-8417", doi = "10.1016/j.ijhydene.2012.02.047" }
Ćirić, K. D., Kocjan, A., Gradisek, A., Koteski, V. J., Kalijadis, A., Ivanovski, V. N., Laušević, Z.,& Stojić, D. Lj.. (2012). A study on crystal structure, bonding and hydriding properties of Ti-Fe-Ni intermetallics - Behind substitution of iron by nickel. in International Journal of Hydrogen Energy, 37(10), 8408-8417. https://doi.org/10.1016/j.ijhydene.2012.02.047
Ćirić KD, Kocjan A, Gradisek A, Koteski VJ, Kalijadis A, Ivanovski VN, Laušević Z, Stojić DL. A study on crystal structure, bonding and hydriding properties of Ti-Fe-Ni intermetallics - Behind substitution of iron by nickel. in International Journal of Hydrogen Energy. 2012;37(10):8408-8417. doi:10.1016/j.ijhydene.2012.02.047 .
Ćirić, Katarina D., Kocjan, Andraz, Gradisek, Anton, Koteski, Vasil J., Kalijadis, Ana, Ivanovski, Valentin N., Laušević, Zoran, Stojić, Dragica Lj., "A study on crystal structure, bonding and hydriding properties of Ti-Fe-Ni intermetallics - Behind substitution of iron by nickel" in International Journal of Hydrogen Energy, 37, no. 10 (2012):8408-8417, https://doi.org/10.1016/j.ijhydene.2012.02.047 . .