Hydrogen sorption in LaNi5

Boser, O.

doi:10.1016/0022-5088(76)90182-x

Cited by 105 publications

(9 citation statements)

References 12 publications

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“…Each alloy absorbs a relatively small amount of hydrogen proportionally with increasing pressure; then, most of the hydrogen is absorbed in the plateau region with a small change in pressure, and only a very small residual quantity is absorbed above the plateau pressure. This mechanism is well-known and has already been described in the literature many years ago on the example of both AB and AB 5 alloys [6,7,[10][11][12][13], so it will not be described here. The most important observations regarding the obtained results may be summarized as follows.…”

Section: Hydrogen Absorption and Desorption Pct Isothermsmentioning

confidence: 99%

“…The typical representative of this group of materials is LaNi 5, which is easy to activate, possesses very good absorption and desorption kinetics [10] and is relatively safe (for a metallic powder) when used. The activation procedure may vary but is usually given in the literature as a long-term exposure under high hydrogen pressure (approximately 50 bar) at a room or elevated temperature [11][12][13], which is also connected with sample evacuations.…”

Section: Introductionmentioning

confidence: 99%

“…The described alloy possesses a capacity of~1.4 wt%. and has a plateau pressure just above 1 bar at room temperature [10,11] depending on the purity and stoichiometry. The storage properties of LaNi 5 can be tuned by replacing La or Ni atoms with other elements.…”

Section: Introductionmentioning

confidence: 99%

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The Influence of Cerium on the Hydrogen Storage Properties of La1-xCexNi5 Alloys

et al. 2020

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La1-xCexNi5 alloys (x = 0, 0.09, 0.25 and 0.5) were investigated in terms of their structures, phase contents, hydrogen storage properties and microhardness. It was confirmed that a cerium addition to the reference (LaNi5) alloy caused structural changes such as lattice shrinkage and, as a result, changed both the absorption and desorption pressures and the enthalpies of formation and decomposition. The alloy with the highest cerium content was found to possess a two-phase structure, probably as a result of nonequilibrium cooling conditions during its manufacturing process. The microhardness was found to increase to some extent with the cerium content and decrease for samples with the highest cerium content.

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Section: Hydrogen Absorption and Desorption Pct Isothermsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Influence of Cerium on the Hydrogen Storage Properties of La1-xCexNi5 Alloys

et al. 2020

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“…LaNi 5 is a typical AB 5 -type HSA, and its hydrogen concentration curve at different pressure differences dP of hydrogen absorption pressure and equilibrium pressure is shown in Fig. 8(a) [75]. The maximum hydrogen concentration increases with the increase of dP.…”

Section: Ab 5 -Type Hsasmentioning

confidence: 99%

Kinetics of the hydrogen absorption and desorption processes of hydrogen storage alloys: A review

Lin

Luo

et al. 2022

Int J Miner Metall Mater

198

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High hydrogen absorption and desorption rates are two significant index parameters for the applications of hydrogen storage tanks. The analysis of the hydrogen absorption and desorption behavior using the isothermal kinetic models is an efficient way to investigate the kinetic mechanism. Multitudinous kinetic models have been developed to describe the kinetic process. However, these kinetic models were deduced based on some assumptions and only appropriate for specific kinetic measurement methods and rate-controlling steps (RCSs), which sometimes lead to confusion during application. The kinetic analysis procedures using these kinetic models, as well as the key kinetic parameters, are unclear for many researchers who are unfamiliar with this field. These problems will prevent the kinetic models and their analysis methods from revealing the kinetic mechanism of hydrogen storage alloys. Thus, this review mainly focuses on the summarization of kinetic models based on different kinetic measurement methods and RCSs for the chemisorption, surface penetration, diffusion of hydrogen, nucleation and growth, and chemical reaction processes. The analysis procedures of kinetic experimental data are expounded, as well as the effects of temperature, hydrogen pressure, and particle radius. The applications of the kinetic models for different hydrogen storage alloys are also introduced.

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“…Hydrogen sorption by activated LaNi 5 was first investigated by Boser [1] and by Tanaka et al [2] by means of pressure variation in a constant volumetric apparatus. Boser performed his work in the 273-363 K temperature range, while Tanaka et al limited their observations at the low temperature of 195 K, to slow down the reaction rate.…”

Section: Introductionmentioning

confidence: 99%

Measurement and modelling of kinetics of hydrogen sorption by LaNi5 and two related pseudobinary compounds

Dhaou¹,

Askri²,

Salah³

et al. 2007

International Journal of Hydrogen Energy

103

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Hydrogen sorption in LaNi5

Cited by 105 publications

References 12 publications

The Influence of Cerium on the Hydrogen Storage Properties of La1-xCexNi5 Alloys

The Influence of Cerium on the Hydrogen Storage Properties of La1-xCexNi5 Alloys

Kinetics of the hydrogen absorption and desorption processes of hydrogen storage alloys: A review

Measurement and modelling of kinetics of hydrogen sorption by LaNi5 and two related pseudobinary compounds

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