The Synthesis Method of Intermetallic Alloys Based on Ti–Cr with C14 and C36 Laves Phases for Hydrogen Storage

Murashkina, T.L.; Сыртанов, М. С.; Shabunin, A.S.; Laptev, Roman

doi:10.1134/s1027451019010300

Cited by 2 publications

(3 citation statements)

References 26 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%

“…Hydrogen absorption of C14 phase TiCr 1.8 at the extremely high pressure of 200 MPa results in the formation of the hydrogen-rich phase TiCr 1.8 H 4.5 (3.1 wt%) [30]. In comparison with C14 and C15, hydrides of the C36 phase are much more stable, but the hydrogen capacities (TiCr 2 H x , x ≤ 0.5) are too low to be considered for hydrogen storage purposes [31][32][33].…”

Section: Ticr 2 -Based Alloysmentioning

confidence: 99%

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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%

Section: Ticr 2 -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

View full text Add to dashboard Cite

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 Synthesis Method of Intermetallic Alloys Based on Ti–Cr with C14 and C36 Laves Phases for Hydrogen Storage

Cited by 2 publications

References 26 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

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