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

Murashkina, T.L.; Сыртанов, М. С.; Laptev, Roman; Лидер, А. М.

doi:10.1016/j.ijhydene.2019.01.150

Cited by 17 publications

(6 citation statements)

References 40 publications

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“…Hydr absorption of C14 phase TiCr1.8 at the extremely high pressure of 200 MPa results i formation of the hydrogen-rich phase TiCr1.8H4.5 (3.1 wt%) [30]. In comparison with and C15, hydrides of the C36 phase are much more stable, but the hydrogen capa (TiCr2Hx, x ≤ 0.5) are too low to be considered for hydrogen storage purposes [31][32][33] For possible applications in high-pressure MH tanks, the plateau pressures of th and C15 phases should be lowered; meanwhile, the hydrogen capacity under mod pressures needs to be improved to meet the requirements. Partial element substituti the A sites and/or the B sites has been proven to be an effective method to optimiz drogen storage performances, like the plateau pressure, capacity, activation and th sorption/desorption hysteresis [34].…”

Section: Ticr2-based Alloysmentioning

confidence: 99%

Unstable Metal Hydrides for Possible On-Board Hydrogen Storage

Cao,

Habermann,

Burkmann

et al. 2024

Hydrogen

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Hydrogen storage in general is an indispensable prerequisite for the introduction of a hydrogen energy-based infrastructure. In this respect, high-pressure metal hydride (MH) tank systems appear to be one of the most promising hydrogen storage techniques for automotive applications using proton exchange membrane (PEM) fuel cells. These systems bear the potential of achieving a beneficial compromise concerning the comparably large volumetric storage density, wide working temperature range, comparably low liberation of heat, and increased safety. The debatable term “unstable metal hydride” is used in the literature in reference to metal hydrides with high dissociation pressure at a comparably low temperature. Such compounds may help to improve the merits of high-pressure MH tank systems. Consequently, in the last few years, some materials for possible on-board applications in such tank systems have been developed. This review summarizes the state-of-the-art developments of these metal hydrides, mainly including intermetallic compounds and complex hydrides, and offers some guidelines for future developments. Since typical laboratory hydrogen uptake measurements are limited to 200 bar, a possible threshold for defining unstable hydrides could be a value of their equilibrium pressure of peq > 200 bar for T < 100 °C. However, these values would mark a technological future target and most current materials, and those reported in this review, do not fulfill these requirements and need to be seen as current stages of development toward the intended target. For each of the aforementioned categories in this review, special care is taken to not only cover the pioneering and classic research but also to portray the current status and latest advances. For intermetallic compounds, key aspects focus on the influence of partial substitution on the absorption/desorption plateau pressure, hydrogen storage capacity and hysteresis properties. For complex hydrides, the preparation procedures, thermodynamics and theoretical calculation are presented. In addition, challenges, perspectives, and development tendencies in this field are also discussed.

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Section: Ticr2-based Alloysmentioning

confidence: 99%

Unstable Metal Hydrides for Possible On-Board Hydrogen Storage

Cao,

Habermann,

Burkmann

et al. 2024

Hydrogen

View full text Add to dashboard Cite

show abstract

“…Hydrogen absorption of C14 phase TiCr1.8 at the extremely high pressure of 200 MPa results in the formation of the hydrogen-rich phase TiCr1.8H4.5 (3.1 wt%) [30]. In comparison with C14 and C15, hydrides of the C36 phase are much more stable but the hydrogen capacities (TiCr2Hx, x ≤ 0.5) are too low to be regarded for hydrogen storage purposes [31][32][33].…”

Section: Ticr2-based Alloysmentioning

confidence: 99%

Unstable Metal Hydrides for Possible on-Board Hydrogen Storage

Cao,

Habermann,

Burkmann

et al. 2024

Preprint

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Hydrogen storage in general is an indispensable prerequisite for the introduction of a hydrogen energy based infrastructure. In this respect, high-pressure metal hydride (MH) tank systems appear to be one of the most promising hydrogen storage techniques for automotive applications using proton exchange membrane (PEM) fuel cells. These systems bear the potential of achieving a beneficial compromise of comparably large volumetric storage density, a wide working temperature range, comparably low liberation of heat, and increased safety. The debatable term unstable metal hydride stands in the literature short for metal hydrides with high dissociation pressure at comparably low temperature. Such compounds may help to improve the merit of high-pressure MH tank systems. Consequently, in the last few years, some materials for possible on-board applications in such tank systems have been developed. This review summarizes the state-of-the-art developments of these metal hydrides, mainly including intermetallic compounds and complex hydrides and gives some guidelines for future developments. Since typical laboratory hydrogen uptake measurements are limited to 200 bar, a possible threshold for defining unstable hydrides could be a value of their equilibrium pressure of peq > 200 bar for T < 100°C. However, these values would mark a technological future target and most current materials, and those reported in this review, do not fulfill these requirements and need to be seen as current stages of development towards the intended target. For each of the aforementioned categories in the review, special care was taken not only to covers the pioneering and classical research, but also to portrait the current status and latest advances. For intermetallic compounds, key aspects focus on the influence of partial substitution on absorption/desorption plateau pressure, hydrogen storage capacity and hysteresis properties. For complex hydrides, the preparation procedures, thermodynamics and theoretical calculation are presented. Besides, challenges, perspectives, and development tendency of this field are also discussed.

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“…The papers [12][13][14] present studies in the field of hydrogen materials science for thermonuclear power engineering. The general distributed model of dehydrogenation is presented in [15], applied problems and corresponding models are presented in [16][17][18]. Models taking into account various stages of hydrogen transfer and numerical methods for solving boundary value problems are described in [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Identification of fast hydrogen permeability parameters of gas separation membranes

Sidorov

Fomkina³

2022

Technical Physics

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The problem of parametric identification of some nonlinear models of fast hydrogen permeability of alloys for membrane technologies for the release of high-purity hydrogen (on the example of alloy B1) is solved. Not only diffusion in the bulk of the material is taken into account, but also physical and chemical processes on the surface: adsorption, desorption and rapid dissolution. The mathematical software and the results of numerical simulation for a three-stage breakthrough experiment with vacuum pumping at the membrane outlet from the structural material under study are presented. The influence of the accumulation of atomic hydrogen on the surface has been studied. Keywords: hydrogen permeability, membrane technology of gas separation, parametric model identification.

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

Cited by 17 publications

References 40 publications

Unstable Metal Hydrides for Possible On-Board Hydrogen Storage

Unstable Metal Hydrides for Possible On-Board Hydrogen Storage

Unstable Metal Hydrides for Possible on-Board Hydrogen Storage

Identification of fast hydrogen permeability parameters of gas separation membranes

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