Studies on hydriding kinetics of some La-based metal hydride alloys

Muthukumar, P.; Satheesh, A.; Linder, Marc; Mertz, Rainer; Groll, M.

doi:10.1016/j.ijhydene.2009.06.075

Cited by 74 publications

(31 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Muthukumar et al [24] investigated the kinetics models for the hydriding kinetics of LaNi 5 metal hydride electrodes. Two widely used reaction kinetics models, namely Johnson-Mehl-Avrami (JMA) model and Jander diffusion model (JDM) were considered for the analysis.…”

Section: Rate Constants Investigationsmentioning

confidence: 99%

“…Previous investigations have demonstrated that the hydrogen diffusion process is the rate limiting step of the electrode reaction [24], especially at high discharge current. Considering the dependence of the hydrogen diffusion coefficient on the hydrogen concentration, we adopted the GITT method to research the hydrogen diffusion coefficient.…”

Section: Galvanostatic Intermittent Titration Technique Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

Investigations on rate constants of the charging/discharging processes for metal hydride electrodes

Zhang

Bian

et al. 2013

Electrochimica Acta

View full text Add to dashboard Cite

Section: Rate Constants Investigationsmentioning

confidence: 99%

Section: Galvanostatic Intermittent Titration Technique Measurementsmentioning

confidence: 99%

Investigations on rate constants of the charging/discharging processes for metal hydride electrodes

Zhang

Bian

et al. 2013

Electrochimica Acta

View full text Add to dashboard Cite

“…The hydriding reaction takes place in 5 sequential steps [77]: Although a detailed model of the complete hydriding reaction would require the modelling of each intermediate process [78], in practice there is often a limiting step which controls the reaction, while the other steps are in equilibrium. Hence, the modelling of the rate controlling reaction may be sufficient to predict the overall reaction rate of a metal hydride system.…”

Section: Introductionmentioning

confidence: 99%

“…In the β phase, where the alloys often present a diffusion controlled reaction [79,87], a few diffusion models have also been applied [77,88,89].…”

mentioning

confidence: 99%

Modelling and analysis of a metal hydride cooling system

Herrero¹

View full text Add to dashboard Cite

The work which is presented by J. Payá Herrero, titled "Modelling and analysis of a metal hydride cooling system" has been carried out at the Institute for Energy Engineering under my supervision and assessment.As the modelling and experimental objectives have been reached, I authorise the submission of this PhD work for its evaluation by the corresponding examination board. This PhD thesis consists in the modelling and validation of a metal hydride cooling system. The experimental prototype is located in the institute IKE.In the first place, the hydrogen absorbing materials have been characterized in terms of the static P-C-T properties and of the intrinsic reaction kinetics. In the second place, after this first characterization phase, a completely dynamic model has been developed based on the heat and mass transfer processes which take place in the reactors. The results have been validated with an exhaustive experimental campaign of dynamic cooling tests and the adjustment of the model is very good.Finally, the cooling performance of the system has been improved by means of the model which has enabled the optimization of the operating conditions and of the sorption materials. El presente estudio consiste en el modelado y validación de un sistema de producción de frío basado en la absorción/desorción de hidrógeno en metales.La instalación experimental que se ha modelado se halla en el instituto IKE.En primer lugar, los materiales utilizados se han caracterizado tanto desde el punto de vista de las curvas P-C-T de equilibrio como de la cinética de absorción/desorción de cada aleación. En segundo lugar, se ha desarrollado un modelo completamente dinámico basado en las reacciones de transferencia de calor y masa que ocurren en los reactores. Los resultados se han validado con una amplia gama de medidas de IKE en régimen transitorio, obteniendo un ajuste muy bueno para diferentes ensayos.Finalmente, mediante la utilización del modelo, se han optimizado las condiciones de operación y las propiedades de los materiales, alcanzando así mejores prestaciones en refrigeración.

show abstract

“…Thus, a great deal of an effort was started to contribute to the understanding of thermodynamic behavior of the LaNi 5-x Al x system [8,9,28]. The present work is an temperature.…”

mentioning

confidence: 99%