Numerical analysis of gas cross-over through the membrane in a proton exchange membrane fuel cell

Seddiq, Mehdi; Khaleghi, Hassan; Mirzaei, Mehran

doi:10.1016/j.jpowsour.2006.04.074

Cited by 29 publications

(21 citation statements)

References 8 publications

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“…In this case, an oxidation current for hydrogen at the cathode has been considered. The effects of hydrogen crossover have been investigated by various authors [26][27][28][29][30][31].…”

Section: Open Circuit Voltagementioning

confidence: 99%

Semi-empirical evaluation of PEMFC electro-catalytic activity

Spinelli

Francia

Ambrosio

et al. 2008

Journal of Power Sources

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“…In this case, an oxidation current for hydrogen at the cathode has been considered. The effects of hydrogen crossover have been investigated by various authors [26][27][28][29][30][31].…”

Section: Open Circuit Voltagementioning

confidence: 99%

Semi-empirical evaluation of PEMFC electro-catalytic activity

Spinelli

Francia

Ambrosio

et al. 2008

Journal of Power Sources

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“…Seod is the generation term which is related to electro-osmotic drag. Generation terms Su s (solution of gas species in water liquid) and Su DR (direct reaction) are described in Seddiq (2006) completely.…”

Section: Catalyst Layermentioning

confidence: 99%

“…His results showed that water transfer in the GDL is strongly temperature dependent. Seddiq et al in 2006 presented a unified two dimensional (vertical to GFC direction) and steadystate model for PEMFC. In their model, it is assumed that reactant gases are dissolved in membrane water and then transferred to the other side where the diffusive gas causes a direct reaction and produces water (the formation of liquid water is not considered).…”

Section: -Introductionmentioning

confidence: 99%

Effects of Gas Cross-over through the Membrane on Water Management in the Cathode and Anode Sides of PEM Fuel Cell

Mohammadzadeh

Khaleghi

Abolfazli

et al. 2018

JAFM

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Water management in a proton exchange membrane fuel cell (PEMFC) is numerically modeled by considering the 2D, non-isothermal steady flow assumptions. Governing equations are solved in all cell layers including cathode and anode electrodes by finite volume method using a single-region approach. The effect of gas cross-over through the membrane is studied on cell performance. This consideration, not only improves the general accuracy of modeling but also makes it possible to model energy losses due to direct reaction of reactant gases. The effect of some key variables such as liquid water diffusivity, current density, membrane thickness, etc. on PEMFC conditions such as the amount of saturated liquid water, power density, cell temperature, cross-over efficiency and so on are examined. It was observed that the amount of saturated liquid water on the anode side is considerably important. This observation addresses needs for further investigation of liquid water behavior in the anode electrode. The amount of liquid water saturation in both the cathode and anode electrodes is increased with increasing the current density. The results showed that at the current density of 0.2 A/cm2, cross-over effect causes about 10% reduction in cell efficiency and by decreasing the current density this effect is enhanced.

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“…Therefore, the mass flow in each channel may be different and is a function of the position of the cell in the stack. During recent years, a number of fundamental studies concerning mathematical modelling have been presented for simulation of the heat, mass and gas flow in fuel cell channels [40,41]. Yuan et al [40] have simulated heat and mass transfer in fuel cells ducts with different cross-sections.…”

Section: Pressure Losses In the Sofc Fuel And Air Channelsmentioning

confidence: 99%

Modelling and Performance Evaluation of Solid Oxide Fuel Cell for Building Integrated Co‐ and Polygeneration

2010

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Models of fuel cell based combined heat and power systems, used in building energy performance simulation codes, are often based on simple black or grey box models. To model a specific device, input data from experiments are often required for calibration. This paper presents an approach for the theoretical derivation of such data. A generic solid oxide fuel cell (SOFC) system model is described that is specifically developed for the evaluation of building integrated co‐ or polygeneration. First, a detailed computational cell model is developed for a planar SOFC and validated with available numerical and experimental data for intermediate and high temperature SOFCs with internal reforming (IT‐DIR and HT‐DIR). Results of sensitivity analyses on fuel utilisation and air excess ratio are given. Second, the cell model is extended to the stack model, considering stack pressure losses and the radiative heat transfer effect from the stack to the air flow. Third, two system designs based on the IT‐DIR and HT‐DIR SOFCs are modelled. Electric and CHP efficiencies are given for the two systems, as well as performance characteristics, to be used in simulations of building integrated co‐ and polygeneration systems.

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Numerical analysis of gas cross-over through the membrane in a proton exchange membrane fuel cell

Cited by 29 publications

References 8 publications

Semi-empirical evaluation of PEMFC electro-catalytic activity

Semi-empirical evaluation of PEMFC electro-catalytic activity

Effects of Gas Cross-over through the Membrane on Water Management in the Cathode and Anode Sides of PEM Fuel Cell

Modelling and Performance Evaluation of Solid Oxide Fuel Cell for Building Integrated Co‐ and Polygeneration

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