Kinetics of hydrogen desorption from the powders of metal hydrides

Gabis, I. E.; Voit, A. P.; Evard, E. A.; Zaika, Yu. V.; Chernov, Ilya; Yartys, V.A.

doi:10.1016/j.jallcom.2005.02.090

Cited by 43 publications

(32 citation statements)

References 7 publications

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“…For in-depth treatment, the interested reader can consult various references [106][107][108][109][110][111][112][113][114][115][116][117] and the classic book of Christian [118].…”

Section: Hydrogenation Kineticsmentioning

confidence: 99%

Metal Hydrides

Huot

2010

Handbook of Hydrogen Storage

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Metal hydrides are promising candidates for many stationary and mobile hydrogen storage applications. Presently, the most common use of metal hydrides is as anode material in commercial nickel-metal hydrides (Ni-MH) rechargeable batteries which have replaced conventional nickel-cadmium batteries in many applications. A wide variety of Ni-MH batteries are now on the market with cell sizes ranging from 30 mAh to 250 Ah [1,2]. Some other applications are: hydrogen compression [3], aircraft fire-detectors [4], isotope separation [5], and hydrogen getters for microelectronic packages. Hydride formation is also used in the HDDR process (hydrogenation-disproportionation-desorption-recombination) for the synthesis of magnetic materials such as Nd 2 Fe 14 B [6]. A striking application is as a component of cryocoolers for the ESA Planck mission [7]. Another exciting new application is the use of metal hydrides for switchable mirrors [8]. As we can see, metal hydrides have a wide range of applications. However, most research and development is targeted towards two applications: batteries and hydrogen storage. The former is now widely exploited but the latter is still facing many technical problems. The main advantages of storing hydrogen in a metal hydride are the high hydrogen volumetric densities (sometimes higher than in liquid hydrogen) and the possibility to absorb and desorb hydrogen with a small change in hydrogen pressure [9].The physics of hydrogen in elemental metals was reviewed at the end of the 1970s in thebooksHydrogeninMetals,volumesIandII [10,11].The1970s alsosawtheemergence of the important field of intermetallic compounds as hydride materials. An in-depth review of this field can be found in Hydrogen in Intermetallic Compounds volumes I, and II [12,13]. A review of the propertiesand applications of hydrogen in metals can befound in the third volume of Hydrogen in Metals [14]. The basic properties of the metal-hydrogen system are discussed from a fundamental point of view by Fukai [15]. Although initial studies on nanocrystalline and amorphous metal hydrides were initiated around the 1980s [16], the real emergence of nanocrystalline metal hydrides as a new class of Handbook of Hydrogen Storage. Edited by Michael Hirscher

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“…For in-depth treatment, the interested reader can consult various references [106][107][108][109][110][111][112][113][114][115][116][117] and the classic book of Christian [118].…”

Section: Hydrogenation Kineticsmentioning

confidence: 99%

Metal Hydrides

Huot

2010

Handbook of Hydrogen Storage

View full text Add to dashboard Cite

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“…The models and applications to absorption kinetics refer usually to the classical Johnson-Mehl-Avrami's 'nucleationand-growth' scenario [7e11], whereas the desorption allows some simplified schemes [6,5]. In the present paper, the confluent 'shrinking core' model [6] (also known as 'contracting envelope', as applied for absorption [9]) was taken as a basis. It has reduced number of parameters compared to that mentioned in Ref.…”

Section: Introductionmentioning

confidence: 99%

Modelling and proper evaluation of volumetric kinetics of hydrogen desorption by metal hydrides

Drozdov

Kochubey

et al. 2015

International Journal of Hydrogen Energy

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“…According to this hypothesis, decomposition of TiH 2 followed the shrinking core model, which was controlled by the hydrogen diffusion and significantly affected by TiH 2 particle size [25,26]. And for most combustible additives, oxidation reaction was started from the surface of the particle and transferred into the core.…”

Section: Influence Of Tih 2 Particle Size and Contentmentioning

confidence: 98%

Effect of TiH₂ Particle Size and Content on the Underwater Explosion Performance of RDX‐Based Explosives

Xue

Shen

et al. 2017

Propellants Explo Pyrotec

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Experiments were conducted to study the underwater explosion performance of titanium hydride/RDXbased (TiH 2 /RDX) composite explosive. Cylinder charges with different TiH 2 particle sizes and contents were prepared and tested. Explosion parameters like peak overpressure, impulse, shock energy, and bubble energy were analyzed. It was notable that underwater explosion performance of TiH 2 /RDX composite explosive was promoted by addition of small particle size TiH 2 (D 50 = 0.96 mm), in which case increasing TiH 2 content also showed a favorable effect. The maximum increments of specific initial shock energy, bubble energy, and total energy were 10.5%, 6.4%, and 7.1% respectively. However, with bigger TiH 2 particle sizes (D 50 = 20.78 mm, D 50 = 136.74 mm), the explosion parameters and the TiH 2 content showed a negative relationship, which reveals that TiH 2 particle size plays an important role in determining the reactivity of TiH 2 . Meanwhile, the interaction between TiH 2 particle size and content was significant.

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Kinetics of hydrogen desorption from the powders of metal hydrides

Cited by 43 publications

References 7 publications

Metal Hydrides

Metal Hydrides

Modelling and proper evaluation of volumetric kinetics of hydrogen desorption by metal hydrides

Effect of TiH₂ Particle Size and Content on the Underwater Explosion Performance of RDX‐Based Explosives

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Kinetics of hydrogen desorption from the powders of metal hydrides

Cited by 43 publications

References 7 publications

Metal Hydrides

Metal Hydrides

Modelling and proper evaluation of volumetric kinetics of hydrogen desorption by metal hydrides

Effect of TiH2 Particle Size and Content on the Underwater Explosion Performance of RDX‐Based Explosives

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Effect of TiH₂ Particle Size and Content on the Underwater Explosion Performance of RDX‐Based Explosives