Dynamic electrochemical model of an alkaline fuel cell stack

Duerr, Matthias; Gair, S.; Cruden, Andrew; McDonald, J.R.

doi:10.1016/j.jpowsour.2007.06.011

Cited by 42 publications

(18 citation statements)

References 2 publications

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“…The model divides the fuel cell in five layers, a gas diffusion layer and reaction layer for both anode and cathode and a separator, containing the electrolyte. Matlab/Simulink environment and added dynamics to the electrical part of the model [15]. Few details were given on the calculation method and the estimation method of some physical parameters.…”

Section: Overview Of Afc Modelsmentioning

confidence: 99%

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Water management in an alkaline fuel cell

Verhaert

Verhelst

Janssen³

et al. 2011

International Journal of Hydrogen Energy

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Alkaline fuel cells are low temperature fuel cells for which stationary applications, like cogeneration in buildings, are a promising market. To guarantee a long life, water and thermal management has to be controlled in a careful way.To understand the water, alkali and thermal flows, a model for an alkaline fuel cell module is developed using a control volume approach. Special attention is given to the physical flow of hydrogen, water and air in the system and the diffusion laws are used to gain insight in the water management. The model is validated on the prediction of the electrical performance and thermal behaviour.The positive impact of temperature on fuel cell performance is shown. New in this model is the inclusion of the water management, for which an extra validation is performed. The model shows that a minimum temperature has to be reached to maintain the electrolyte concentration. Increasing temperature for better performance without reducing the electrolyte concentration is possible with humidified hot air.

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Section: Overview Of Afc Modelsmentioning

confidence: 99%

“…Within the fuel cell body the catalytic and separator layer are enclosed [13,14,15]. Although different layers exist in the fuel cell, in this paper the properties of the electrolyte/separator are taken to define the thermodynamic behaviour of the fuel cell body.…”

Section: Fuel Cell Bodymentioning

confidence: 99%

Water management in an alkaline fuel cell

Verhaert

Verhelst

Janssen³

et al. 2011

International Journal of Hydrogen Energy

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“…Moreover, the development of anion exchange membranes has overcome the serious CO 2 -poisoning problem to KOH electrolyte [24][25][26], which leads to a significant increase of importance and interest to develop alternative noble metal-free catalysts with an acceptable ORR performance for alkaline fuel cell (AFC) and alkaline direct methanol fuel cell (ADMFC). 5 Since tungsten carbide (WC) was discovered to possess similar catalytic properties to those of platinum group metals for certain reactions by Levy and Boudart, several investigations have explored it as possible ORR catalyst materials for PEM fuel cell applications [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Novel graphite-carbon encased tungsten carbide nanocomposites by solid-state reaction and their ORR electrocatalytic performance in alkaline medium

Huang

et al. 2015

Electrochimica Acta

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“…(6) shows that even when the electrochemical reaction is reversible, the energy ÀTDS cannot be converted to electric energy and it is released as heat. When no current is required by the external load, the AFC achieves its theoretical maximum voltage (or reversible cell potential) E, which is determined by Nernst equation [21,28,29] E ¼ À…”

Section: The Efficiency and Power Output Of An Afcmentioning

confidence: 99%