A Method for Numerical Expressions of <i>P-C</i> Isotherms of Hydrogen-Absorbing Alloys*

Fujitani, S.; Nakamura, Hiroshi; Furukawa, A.; Nasako, K.; Satoh, Katsunori; Imoto, T.; Saito, Toshihiko; Yonezu, I.

doi:10.1524/zpch.1993.179.part_1_2.027

Cited by 26 publications

(12 citation statements)

References 10 publications

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“…This is an important result since there has been no a priori assumption of a Gaussian distribution in the model of part 1 so that it can be regarded as an experimental result from the analysis. Other workers [1,2] who described sloping plateaux assumed a Gaussian distribution in their analysis.…”

Section: Lani 5 Alloymentioning

confidence: 99%

“…The "standard" alloy which was believed to be the closest to the stoichiometric composition is also the most homogeneous. The parameters needed for the use of equation [1] are given in Table 1 and have been derived from the degree of sloping according to the method of part I. The value of k(θ t ) (Eq.…”

Section: Lani 5 Alloymentioning

confidence: 99%

“…The degree of sloping will be related to the compositional inhomogeneity and may provide a tool for the quantitative determination of compositional inhomogeneities in these systems. There have been several attempts to analyze sloping plateau behavior due to inhomogeneities [1,2], but until now there have been no attempts to quantitatively relate these to the actual compositional inhomogeneities.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of sloping plateaux in alloys and intermetallic hydrides

Luo

Park

Flanagan

2004

Journal of Alloys and Compounds

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Section: Lani 5 Alloymentioning

confidence: 99%

Section: Lani 5 Alloymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of sloping plateaux in alloys and intermetallic hydrides

Luo

Park

Flanagan

2004

Journal of Alloys and Compounds

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“…Fujitami et al [3] have analyzed sloping isotherms using a Gaussian distribution for the equilibrium plateau pressures (Fig. 3).…”

Section: Introductionmentioning

confidence: 99%

“…Schematic representations of the composition distributions assumed by Fujitami et al[3] and Lototsky et al[4].…”

mentioning

confidence: 99%

Analysis of sloping plateaux in alloys and intermetallic hydrides

Park

Luo

Flanagan

2004

Journal of Alloys and Compounds

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Characterisation of pressure‐concentration‐temperature profiles for metal hydride hydrogen storage alloys with model development

2023

Energy Storage

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Metal hydride (MH) alloys have been applied to hydrogen storage and various energy conversion systems such as refrigeration, heat pump and heat transformer. However, to facilitate and efficiently investigate efficiently a particular application, an MH alloy must firstly be characterised with a purposely built test facility to measure profiles of pressure, MH hydrogen concentration and temperature (PCT). Obtaining detailed PCT profiles or curves could be an arduous and expensive task as each isothermal hydrogen absorption or desorption line requires hundreds of measurement points. It is thus desirable to develop an accurate correlative model for the PCT profiles with limited measurements of thermophysical property data for the purpose of characterisation of each MH alloy. This correlative model or characterisation process has been developed and is described in detail in this article. The correlative PCT MH alloy profiles can cover all applicable hydrogen storage phase regions of α, α + β and β as well as the phase transition dome curve and critical point such that a PCT phase diagram for a particular MH alloy can be depicted and characterised. As an application example, the correlative model is applied to predict an MH alloy's hydrogen storage capacity and hysteresis at a specific MH temperature. It has been discovered that each of these two parameters shows comparative trends in variation with reduced temperature. Correspondingly, for each parameter, a correlative function with reduced temperature has been produced. The MH alloy characterisation process is an essential step towards a detailed dynamic MH energy system modelling, simulation and optimisation as well as experimental investigation.

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A Method for Numerical Expressions of P-C Isotherms of Hydrogen-Absorbing Alloys*

Cited by 26 publications

References 10 publications

Analysis of sloping plateaux in alloys and intermetallic hydrides

Analysis of sloping plateaux in alloys and intermetallic hydrides

Analysis of sloping plateaux in alloys and intermetallic hydrides

Characterisation of pressure‐concentration‐temperature profiles for metal hydride hydrogen storage alloys with model development

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