Cyclic stability of the C36-type TiCr2 Laves phase synthesized in the abnormal glow discharge plasma under hydrogenation

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Abstract

In this work, the cyclic stability of the C36-type TiCr2 Laves phase synthesized in the abnormal glow discharge plasma was investigated. Melting of titanium-chromium metallic powders by the glow discharge plasma leads to the formation of the TiCr2 hexagonal C36 Laves phase with lattice parameters a = 4.928 Å and c = 15.983 Å. The hydrogenation-dehydrogenation method was used for crushing to increase the effective sorption capacity of the C36-type TiCr2 Laves phase. The stable hydride TiCr2Hx (x ≤ 0.5) phase of structural polytype C36 is formed during the first absorption/desorption cycle at the temperature of 30 °C. After 15 cycles hydride with the stoichiometric composition close to the TiCr2H0.5 phase of C36 polytype with lattice parameters: a = 4.961 Å and c = 16.224 Å was observed by XRD analysis. The hydrogen is localized in the crystal lattice in three main states: in a solid solution trapped by defects, open volume defects, and in the form of hydrides.

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
DOIs
Publication statusPublished - 1 Jan 2019

Fingerprint

Laves phases
Glow discharges
Hydrides
glow discharges
Hydrogenation
hydrogenation
hydrides
Plasmas
Lattice constants
lattice parameters
crushing
Defects
cycles
defects
Crushing
Dehydrogenation
dehydrogenation
crystal lattices
Crystal lattices
sorption

Keywords

  • Glow discharge
  • Hydrogen storage
  • Hydrogenation
  • Laves phase
  • Thermal desorption spectroscopy
  • Ti–Cr alloys

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

@article{5deb605b4353427d8ffe8b4f54324803,
title = "Cyclic stability of the C36-type TiCr2 Laves phase synthesized in the abnormal glow discharge plasma under hydrogenation",
abstract = "In this work, the cyclic stability of the C36-type TiCr2 Laves phase synthesized in the abnormal glow discharge plasma was investigated. Melting of titanium-chromium metallic powders by the glow discharge plasma leads to the formation of the TiCr2 hexagonal C36 Laves phase with lattice parameters a = 4.928 {\AA} and c = 15.983 {\AA}. The hydrogenation-dehydrogenation method was used for crushing to increase the effective sorption capacity of the C36-type TiCr2 Laves phase. The stable hydride TiCr2Hx (x ≤ 0.5) phase of structural polytype C36 is formed during the first absorption/desorption cycle at the temperature of 30 °C. After 15 cycles hydride with the stoichiometric composition close to the TiCr2H0.5 phase of C36 polytype with lattice parameters: a = 4.961 {\AA} and c = 16.224 {\AA} was observed by XRD analysis. The hydrogen is localized in the crystal lattice in three main states: in a solid solution trapped by defects, open volume defects, and in the form of hydrides.",
keywords = "Glow discharge, Hydrogen storage, Hydrogenation, Laves phase, Thermal desorption spectroscopy, Ti–Cr alloys",
author = "Murashkina, {T. L.} and Syrtanov, {M. S.} and Laptev, {R. S.} and Lider, {A. M.}",
year = "2019",
month = "1",
day = "1",
doi = "10.1016/j.ijhydene.2019.01.150",
language = "English",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",
publisher = "Elsevier Limited",

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TY - JOUR

T1 - Cyclic stability of the C36-type TiCr2 Laves phase synthesized in the abnormal glow discharge plasma under hydrogenation

AU - Murashkina, T. L.

AU - Syrtanov, M. S.

AU - Laptev, R. S.

AU - Lider, A. M.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - In this work, the cyclic stability of the C36-type TiCr2 Laves phase synthesized in the abnormal glow discharge plasma was investigated. Melting of titanium-chromium metallic powders by the glow discharge plasma leads to the formation of the TiCr2 hexagonal C36 Laves phase with lattice parameters a = 4.928 Å and c = 15.983 Å. The hydrogenation-dehydrogenation method was used for crushing to increase the effective sorption capacity of the C36-type TiCr2 Laves phase. The stable hydride TiCr2Hx (x ≤ 0.5) phase of structural polytype C36 is formed during the first absorption/desorption cycle at the temperature of 30 °C. After 15 cycles hydride with the stoichiometric composition close to the TiCr2H0.5 phase of C36 polytype with lattice parameters: a = 4.961 Å and c = 16.224 Å was observed by XRD analysis. The hydrogen is localized in the crystal lattice in three main states: in a solid solution trapped by defects, open volume defects, and in the form of hydrides.

AB - In this work, the cyclic stability of the C36-type TiCr2 Laves phase synthesized in the abnormal glow discharge plasma was investigated. Melting of titanium-chromium metallic powders by the glow discharge plasma leads to the formation of the TiCr2 hexagonal C36 Laves phase with lattice parameters a = 4.928 Å and c = 15.983 Å. The hydrogenation-dehydrogenation method was used for crushing to increase the effective sorption capacity of the C36-type TiCr2 Laves phase. The stable hydride TiCr2Hx (x ≤ 0.5) phase of structural polytype C36 is formed during the first absorption/desorption cycle at the temperature of 30 °C. After 15 cycles hydride with the stoichiometric composition close to the TiCr2H0.5 phase of C36 polytype with lattice parameters: a = 4.961 Å and c = 16.224 Å was observed by XRD analysis. The hydrogen is localized in the crystal lattice in three main states: in a solid solution trapped by defects, open volume defects, and in the form of hydrides.

KW - Glow discharge

KW - Hydrogen storage

KW - Hydrogenation

KW - Laves phase

KW - Thermal desorption spectroscopy

KW - Ti–Cr alloys

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