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Surface Properties of PEMFC Gas Diffusion Layers
Journal of The Electrochemical Society, 2010Understanding liquid-water transport phenomena inside operating proton exchange membrane fuel cells PEMFCs can only be achieved by a basic understanding of gas diffusion layer GDL wetting properties. This requires measuring and quantifying the combined properties of different GDL materials and layers.
David L. Wood +2 more
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Formation of diffusion layers during gas nitriding
Metal Science and Heat Treatment, 19801. In the process of two-stage nitriding a layer with a dense zone of e carbonitrides is formed, which ensures dimensional stability of machine parts and good operating characteristics. Grinding can be replaced with light polishing. 2. The properties are best for the nitrided case with a thin (several μm) dense layer of e carbonitrides ...
J. Zysk, J. Tatsikovski, I. Sulkovski
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Journal of The Electrochemical Society, 2021
An improved stochastic reconstruction method for a gas diffusion layer (GDL) of proton exchange membrane fuel cell is developed to promote the accuracy in evaluating effective gas diffusivity. Carbon fibers are generated using stochastic algorithm within a representative element volume.
Lijun Zhu +5 more
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An improved stochastic reconstruction method for a gas diffusion layer (GDL) of proton exchange membrane fuel cell is developed to promote the accuracy in evaluating effective gas diffusivity. Carbon fibers are generated using stochastic algorithm within a representative element volume.
Lijun Zhu +5 more
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Characterization of Gas Diffusion Layers for PEMFC
Journal of The Electrochemical Society, 2004In proton-exchange membrane fuel cells (PEMFC), gas diffusion layers serve as current collectors that allow ready access of fuel and oxidant to the anode and the cathode catalyst surfaces, respectively. Critical properties of five commercial and one in-house gas diffusion layers have been characterized and compared to determine factors limiting the ...
Minkmas V. Williams +4 more
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Evaporation of Water from Gas Diffusion Layers
ECS Meeting Abstracts, 2017Evaporation of water from gas diffusion layers (GDL) is an important process for water management in polymer electrolyte fuel cells. At temperatures around 80 °C and locally under-saturated conditions, evaporation can have a significant impact on the GDL saturation. However, little is known about the evaporation rates of water in gas
Felix N Büchi +2 more
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2014
The GDL is important part of polymer electrolyte membrane PEM and direct methanol DM fuel cell. There are two gas diffusion layers (cathode and anode sides) which as the name suggests diffuse reactant gases to the catalyst layer (of the electrolyte membrane).
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The GDL is important part of polymer electrolyte membrane PEM and direct methanol DM fuel cell. There are two gas diffusion layers (cathode and anode sides) which as the name suggests diffuse reactant gases to the catalyst layer (of the electrolyte membrane).
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Characterization of PEMFCs gas diffusion layers properties
Journal of Power Sources, 2006Experiments have been carried out on different gas diffusion layer (GDL) materials in order to better understand the influence of this component on fuel cell performance. The study, focused on the mechanical behaviour of the GDL, shows the effect of the stress caused both by the hot-pressing and the compression in a cell on different types of carbon ...
Sylvie Escribano +4 more
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Investigating Ice Formation in Gas-Diffusion Layers
ECS Meeting Abstracts, 2010Abstract not Available.
Thomas J. Dursch +2 more
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Characterization of gas diffusion layers for PEMFC
Electrochimica Acta, 2008Abstract A carbon-filled gas diffusion layer (CFGDL), which is in the configuration similar to conventional carbon cloth gas diffusion layer (GDL) coated with carbon layer on both faces, was investigated and compared with conventional carbon paper-based single-layer and dual-layer GDLs.
Han, M. +3 more
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Gas Diffusivity of PEM Fuel Cells Gas Diffusion Layer: Experimental Measurement and Modeling
ECS Meeting AbstractsThe rate of gas transport through the PEMFC gas diffusion layers (GDL) is a function of GDL morphology, such as thickness, porosity, fibre diameters, tortuosity, etc.. Numerical methods can capture the intricacies of the GDL pore structure. However, the results obtained are specific to the analyzed structure and cannot be generalized to other GDLs ...
Amin Mohammadi +4 more
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