Low and high-pressure hydriding of V–0.5at.%C

Lamb, Joshua; Chandra, Dhanesh; Coleman, Michael M.; Sharma, Archana; Cathey, W.N.; Paglieri, Stephen N.; Wermer, Joseph R.; Bowman, Robert C.; Lynch, F. E.

doi:10.1016/j.jnucmat.2010.01.002

Cited by 3 publications

(2 citation statements)

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“…Incremental loading of vanadium with hydrogen results in vanadium hydrides with low, VH 1-x , and high, VH 2-x , hydrogen atomic percentages. Phase transition between the two hydrides is reversible and shows a steep dependence of temperature to pressure and composition [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Effects of alloying elements (Al, Mn, Ru) on desorption plateau pressures of vanadium hydrides: An experimental and first-principles study

Liu

et al. 2018

International Journal of Hydrogen Energy

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Vanadium-based alloys are promising for the reversible, compressed storage of renewable hydrogen. To improve the hydrogen desorption plateau pressure of vanadium hydrides, V-3A binary alloys (i.e. V 97 Al 3 , V 97 Mn 3 , and V 97 Ru 3) were prepared by vacuum arc melting. Hydrogen absorption and desorption properties of the newly prepared V-3A samples were studied, and compared to vanadium hydrides, by pressure-composition-temperature measurements and first-principles calculations. Among V-3A binary alloys, V 97 Ru 3 achieved the highest hydrogen desorption plateau pressure while accommodating the highest atomic percentage of hydrogen. Meanwhile, it was also the alloy with the highest measured hardness. 2 Hydrogen desorption plateau pressures of V-3A alloys were complemented with DFT calculated formation energies. Calculated DOS, ELF and Bader charges showed that the influence of alloying on the electronic properties of the hydrides was comparable for Mn and Ru; whereas for Al alloying, vanadium dihydride bonding interactions were modified the most.

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Section: Introductionmentioning

confidence: 99%

Effects of alloying elements (Al, Mn, Ru) on desorption plateau pressures of vanadium hydrides: An experimental and first-principles study

Liu

et al. 2018

International Journal of Hydrogen Energy

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show abstract

“…Because the DH f was reduced from À43.0 kJ/mol for Ti 25 V 35 Cr 40 to À39.5 kJ/ mol for Ti 25 V 35 Cr 40 C 0.1 [23], the disproportionation rate was accordingly and partially retarded. Such hydride destabilization by the inclusion of carbon has also been seen in the VeH system, as for the reduction of the DH f of b 2 4 g from À83 kJ/mol for pure V to À60 kJ/mol for V containing 0.5 at% C [9]. As a result, better stability of the annealed Ti 25 V 35 Cr 40 C 0.1 during hydrogenation cycling could be obtained.…”

Section: Stabilization Of G-hydride By C Inclusionmentioning

confidence: 71%

Cyclic hydrogenation stability of γ-hydrides for Ti25V35Cr40 alloys doped with carbon

Shen

2015

Journal of Alloys and Compounds

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New model of phase equilibria in metal – hydrogen systems: Features and software

Lototskyy

2016

International Journal of Hydrogen Energy

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Low and high-pressure hydriding of V–0.5at.%C

Cited by 3 publications

References 50 publications

Effects of alloying elements (Al, Mn, Ru) on desorption plateau pressures of vanadium hydrides: An experimental and first-principles study

Effects of alloying elements (Al, Mn, Ru) on desorption plateau pressures of vanadium hydrides: An experimental and first-principles study

Cyclic hydrogenation stability of γ-hydrides for Ti25V35Cr40 alloys doped with carbon

New model of phase equilibria in metal – hydrogen systems: Features and software

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