Estimation of through-plane and in-plane gas permeability across gas diffusion layers (GDLs): Comparison with equivalent permeability in bipolar plates and relation to fuel cell performance

Mukherjee, Mainak; Bonnet, Caroline; Lapicque, François

doi:10.1016/j.ijhydene.2020.03.026

Cited by 31 publications

(29 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… 62 , 63 In particular, permeability can be divided into in-plane and through-plane, which depend on the intrinsic properties of the GDL, such as the PTFE content, density, thickness, and the presence of an MPL. 64 − 66 The average through-plane and in-plane permeability of gas flow across the GDL was slightly higher for the GDL treated with PTFE than the GDL without treatment at the same thickness. 64 …”

Section: Resultsmentioning

confidence: 95%

“… 64 − 66 The average through-plane and in-plane permeability of gas flow across the GDL was slightly higher for the GDL treated with PTFE than the GDL without treatment at the same thickness. 64 …”

Section: Resultsmentioning

confidence: 95%

“… 67 , 68 Ultimately, the MPL acts as a barrier in gas transport, lowering through-plane permeability and promoting in-plane permeability. 64 This tendency creates an environment that is difficult to permeate through the through-plane of the diffusion layer when liquid fuel is used.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Effects of the Anode Diffusion Layer on the Performance of a Nonenzymatic Electrochemical Glucose Fuel Cell with a Proton Exchange Membrane

et al. 2021

View full text Add to dashboard Cite

It is necessary to apply a nonenzymatic glucose fuel cell using a proton exchange membrane for an implantable biomedical device that operates at low power. The permeability of glucose with high viscosity and a large molecular weight in the porous medium of the diffusion layer was investigated for use in fuel cells. Carbon paper was prepared as an anode diffusion layer, and it was analyzed with a diffusion layer treated with polytetrafluoroethylene (PTFE) and a microporous layer (MPL). When untreated carbon paper was applied, the peak power density (PPD) and open-circuit voltage (OCV) increased as the glucose concentration and flow rate increased. On this occasion, the highest PPD of 17.81 μW cm –2 was achieved at 3 mM and a 2.0 mL min –1 glucose aqueous solution (at atmospheric pressure and 36.5 °C). The diffusion layer, which became more hydrophobic through PTFE treatment, adversely affected glucose permeability. In addition, the addition of an MPL decreased OCV and PPD with increasing glucose concentrations and flow rates. Compared with untreated carbon paper, the PPD was six times lower approximately. Consequently, it was confirmed that the properties of carbon paper, such as low hydrophobicity, high porosity, and thin thickness, would be advantageous for nonenzymatic glucose fuel cells.

show abstract

Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 95%

See 1 more Smart Citation

Effects of the Anode Diffusion Layer on the Performance of a Nonenzymatic Electrochemical Glucose Fuel Cell with a Proton Exchange Membrane

et al. 2021

View full text Add to dashboard Cite

show abstract

“…This results in intrusion against the capillary pressures of the MPL pores, 13,14 although appreciable water leakage to the oxygen flow channel was not observed. Once the water penetrated the gasket surface and MPLs, a much smaller pressure gradient may have been required for water transport 14,30 until the capillary pressure at the interface between accumulated oxygen bubble and liquid water developed in the MPL pores.…”

Section: C E P T E D M Manuscriptmentioning

confidence: 99%

Water Transport Analysis in a Polymer Electrolyte Electrolysis Cell Comprised of Gas/Liquid Separating Interdigitated Flow Fields

et al. 2022

View full text Add to dashboard Cite

A novel interdigitated flow field design for polymer electrolyte electrolysis cells (proton exchange membrane water electrolysis cells) composed of oxygen exhaust channels apart from liquid water feed channels has been developed for ground and space applications because the design is advantageous in terms of oxygen/water separation without buoyancy, and dispenses with water circulators for bubble removal in a cell and external separators by natural or centrifugal buoyancy. Finite element modeling of water transport in the polymer electrolyte (proton exchange) membrane in a cell with the interdigitated flow fields is conducted. Current-voltage (I-V) measurement of the cell is also performed for comparison with numerical modeling. Deviation of the experimental I-V characteristics from those of the numerical model indicates a possible water transport path in the in-plane direction of hydrophobic microporous layers (MPLs) coated on gas diffusion layers installed between the anode catalyst layers (CLs) and oxygen flow channels in the cell. Analysis of the deviation associated with the limitation of water transport also suggests fractional bubble coverage of produced oxygen gas at the CLs. The hydrophobic MPL acts to separate oxygen gas and pressurized liquid water due to the capillary pressure, while it determines the limitation of water transport to the CLs with the oxygen bubble coverage.

show abstract

“…Nitrogen was injected continuously through the inlet pipe section having a diameter of 5 mm. By shutting one gas outlet or the other, nitrogen either flows perpendicularly through the GDL layer or is forced to circulate radially in-plane from the inlet central pipe to the peripheral area of the porous disk before being collected by the circular groove (Figure 1) as explained in [25]. For both through-and in-plane flows, the material permeability was obtained from the variations of the pressure drop as a function of nitrogen flow rate through the GDL.…”

Section: Post-mortem Analysismentioning

confidence: 99%

Long term study of directly hybridized proton exchange membrane fuel cell and supercapacitors for transport applications with lower hydrogen losses

Arora

Bonnet

Mukherjee

et al. 2020

Journal of Energy Storage

View full text Add to dashboard Cite

show abstract

Estimation of through-plane and in-plane gas permeability across gas diffusion layers (GDLs): Comparison with equivalent permeability in bipolar plates and relation to fuel cell performance

Cited by 31 publications

References 24 publications

Effects of the Anode Diffusion Layer on the Performance of a Nonenzymatic Electrochemical Glucose Fuel Cell with a Proton Exchange Membrane

Effects of the Anode Diffusion Layer on the Performance of a Nonenzymatic Electrochemical Glucose Fuel Cell with a Proton Exchange Membrane

Water Transport Analysis in a Polymer Electrolyte Electrolysis Cell Comprised of Gas/Liquid Separating Interdigitated Flow Fields

Long term study of directly hybridized proton exchange membrane fuel cell and supercapacitors for transport applications with lower hydrogen losses

Contact Info

Product

Resources

About