Effect of cathode microporous layer composition on proton exchange membrane fuel cell performance under different air inlet relative humidity

Chen, Honghua; Chang, Min‐Hsing

doi:10.1016/j.jpowsour.2013.01.079

Cited by 49 publications

(19 citation statements)

References 7 publications

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“…As stated earlier, the literature has shown that the permeability of the GDL increases with increasing PTFE loading in the MPL [21][22]. However, such a results was drawn from either a single value for the carbon loading and/or a limited number of PTFE loadings.…”

Section: Introductionmentioning

confidence: 93%

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The effects of the composition of microporous layers on the permeability of gas diffusion layers used in polymer electrolyte fuel cells

Orogbemi

Ingham

Ismail

et al. 2016

International Journal of Hydrogen Energy

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Section: Introductionmentioning

confidence: 93%

“…Similarly, it has been shown that the performance of the PEFC is highly sensitive to the PTFE loading either in the carbon substrate or in the MPL [19][20][21].…”

Section: Introductionmentioning

confidence: 96%

The effects of the composition of microporous layers on the permeability of gas diffusion layers used in polymer electrolyte fuel cells

Orogbemi

Ingham

Ismail

et al. 2016

International Journal of Hydrogen Energy

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“…Alink et al [10] investigated the effects on water management from machined and laser modifications to the porous layer and found that selective perforations to the cathode microporous layer (MPL) helped improve performance in both flooding and dry conditions. Chen et al [11] studied the effect of different MPL compositions in relation to different air RH, and found that the MPL composition should be optimized in relation to the operating RH of the cathode in order to maximize performance. Finally, Li et al [12] investigated four different cathode types with varying structures and properties to study the relationship between their water management capabilities and electrochemical performance.…”

Section: Introductionmentioning

confidence: 99%

Quantifying Cathode Water Transport via Anode Relative Humidity Measurements in a Polymer Electrolyte Membrane Fuel Cell

et al. 2017

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Abstract:A relative humidity (RH) measurement based on pressure drop analysis is presented as a diagnostic tool to experimentally quantify the amount of excess water on the cathode side of a polymer electrolyte membrane fuel cell (PEMFC). Ex-situ pressure drop calibration curves collected at fixed RH values, used with a set of well-defined equations for the anode pressure drop, allows for an estimate of in-situ relative humidity values. During the in-situ test, a dry anode inlet stream at increasing flow rates is used to create an evaporative gradient to drive water from the cathode to the anode. This combination of techniques thus quantitatively determines the changing net cell water flux. Knowing the cathodic water production rate, the net water flux to the anode can explain the influence of liquid and vapor transport as a function of GDL selection. Experimentally obtained quantified values for the water removal rate for a variety of cathode gas diffusion layer (GDL) setups are presented, which were chosen to experimentally vary a range of water management abilities, from high to low performance. The results show that more water is transported to the anode when a GDL with poor water management capabilities is used, due to the higher levels of initial saturation occurring on the cathode. At sufficiently high concentration gradients, the anode removes more water than is produced by the reaction, allowing for the quantification of excess water saturating the cathode. The protocol is broadly accessible and applicable as a quantitative diagnostic tool of water management in PEMFCs.

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“…Since gas diffusion layers have unmistakably been recognised as key components in the PEMFC 34–38, their capability of retaining the water balance under variable conditions deserves further consideration. Effects of GDL/MPL PTFE content, type of MPL carbon or carbon loading of the MPL have been reported exhaustively 8, 39–43.…”

Section: Introductionmentioning

confidence: 99%

Benefits of Membrane Electrode Assemblies with Asymmetrical GDL Configurations for PEM Fuel Cells

Schweiss

2015

Fuel Cells

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Membrane electrode assemblies (MEAs), based on commercial catalyst‐coated membranes combined with various gas diffusion layers (GDLs) on anode and cathode, were studied in terms of their specific advantages for different operations regimes of proton exchange membrane fuel cells (PEMFCs.) It is verified that MEAs with optimized gas diffusion layer designs (backing and micro‐porous layers) on anode and cathode are able to provide improved cell performance combined with a largely reduced sensitivity towards changes in the relative humidity as compared to MEAs with symmetrical gas diffusion layer configuration.

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Effect of cathode microporous layer composition on proton exchange membrane fuel cell performance under different air inlet relative humidity

Cited by 49 publications

References 7 publications

The effects of the composition of microporous layers on the permeability of gas diffusion layers used in polymer electrolyte fuel cells

The effects of the composition of microporous layers on the permeability of gas diffusion layers used in polymer electrolyte fuel cells

Quantifying Cathode Water Transport via Anode Relative Humidity Measurements in a Polymer Electrolyte Membrane Fuel Cell

Benefits of Membrane Electrode Assemblies with Asymmetrical GDL Configurations for PEM Fuel Cells

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