Water transport coefficient distribution through the membrane in a polymer electrolyte fuel cell

Liu, Fuqiang; Lu, Guoqiang; Wang, Chao Yang

doi:10.1016/j.memsci.2006.10.030

Cited by 65 publications

(19 citation statements)

References 24 publications

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“…This means that on the anode side if, for instance, the inlet stream is dry, the water content increases along the gas flow channel to saturation, due to the negative net water transport coefficient (the back-diffusion is obviously the dominant mechanism since the cathode stream is fully saturated). This behaviour is confirmed in several experimental studies [23][24][25][26]. Therefore, an effective anode stream water vapour pressure of 50% of the saturation pressure is assumed as a first approximation.…”

Section: Assumptions and Simplificationssupporting

confidence: 63%

Behaviour modelling of a PEMFC operating on diluted hydrogen feed

Minutillo

Perna²

2008

Int. J. Energy Res.

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SUMMARYThe polymer electrolyte membrane fuel cell (PEMFC) using reformate gas as fuel is regarded as an attractive solution for the near-term introduction of fuel cells in stationary or mobile power generation market.With respect to hydrogen feeding, the reformate gas fuelling involves additional polarization losses because of the hydrogen dilution and the impurities contained in the gas.In this paper a one-dimensional model has been developed to investigate the behaviour of a PEMFC operating with reformate gas mixture.The model, based on a semi-empirical approach, considers the kinetic reactions in the anode side taking into account the effect of reverse water-gas shift (RWGS) due to the presence of CO 2 in the fuel. As it is well known, the exhaust stream from fuel reformers can contain a high carbon dioxide concentration (420%) that can have a detrimental effect on the fuel cell performance because of the combination of the dilution and the formation of CO by the RWGS reaction.The numerical simulation results have been compared with the experimental data, obtained in the test room of Industrial Engineering Department of Cassino University, and a good match has been observed.The model has been developed by using a simplified approach that, nevertheless, can allow to obtain a good numerical prediction of the fuel cell performance reducing the simulation time and computational efforts.

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Section: Assumptions and Simplificationssupporting

confidence: 63%

Behaviour modelling of a PEMFC operating on diluted hydrogen feed

Minutillo

Perna²

2008

Int. J. Energy Res.

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“…For the detailed solution of equations (4) and (5) the reader my refers the reference [9] The net water transport coefficient α(y) can be mathematically represented as [9]; (7) The amount of water that the membrane can hold depends upon the temperatures and the water uptake of the cell. The relationship between the water activity on the faces of the membrane and water content can be described by [11] …”

Section: Mathematical Equationsmentioning

confidence: 99%

“…4 10 32.6 10 exp 1268 (9) Therefore the total resistance of the membrane can be calculated as [6] (10)…”

Section: Mathematical Equationsmentioning

confidence: 99%

“…When the membrane is saturated, the hydraulic model provides a better approximation of the water transport as discussed by M. Eikerling et al [7] and J. Fimrite et al [8] . Fuqiang Liu [9] has studied the water transport coefficient in proton exchange membrane fuel cell. It is found that the local current density is dominated by the membrane hydration and that the gas RH has a large effect on water transport through the membrane.…”

Section: Introductionmentioning

confidence: 99%

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One Dimensional Steady State Model for Studying Hydration of Membrane in Proton Exchange Membrane Fuel Cell

Kumar¹,

Khare²

2011

IJAPM

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“…Perng and Wu [11] compared fuel cell performance through computational analysis of flow field characteristics in the catalyst layer surface and inside the channel, using different forms in the GDL of PEM fuel cells. In addition, they varied the number of forms to compare the flow characteristics and fuel cell performance [12].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Improvement of Performance by Wave Form Cathode Channels in a PEM Fuel Cell

et al. 2018

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Abstract:We propose a wave-like design on the surface of cathode channels (wave form cathode channels) to improve oxidant delivery to gas diffusion layers (GDLs). We performed experiments using proton-exchange membrane fuel cells (PEMFCs) combined with wave form surface design on cathodes. We varied the factors of the distance between wave-bumps (the adhesive distance, AD), and the size of the wave-bumps (the expansion ratio, ER). The ADs are three, four, and five times the size of the half-circle bump's radius, and the ERs are two-thirds, one-half, and one-third of the channel's height. We evaluated the performances of the fuel cells, and compared the current-voltage (I-V) relations. For comparison, we prepared PEMFCs with conventional flat-surfaced oxygen channels. Our aim in this work is to identify fuel cell operation by modifying the surface design of channels, and ultimately to find the optimal design of cathode channels that will maximize fuel cell performance.

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Water transport coefficient distribution through the membrane in a polymer electrolyte fuel cell

Cited by 65 publications

References 24 publications

Behaviour modelling of a PEMFC operating on diluted hydrogen feed

Behaviour modelling of a PEMFC operating on diluted hydrogen feed

One Dimensional Steady State Model for Studying Hydration of Membrane in Proton Exchange Membrane Fuel Cell

Experimental Study on Improvement of Performance by Wave Form Cathode Channels in a PEM Fuel Cell

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