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Showing 1 to 12 of 12 for “"gas diffusion layer (GDL)"”.
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Hybrid fuel cell for mobile devices : an integrated approach
… oxygen and methanol concentration, and cathode gas diffusion layer (GDL) were performed on two standard membrane electrode assemblies (MEA). In addition, an MEA was modified using polyvinyl alcohol (PVA) to test its effect on decreasing methanol crossover for improved fuel cell performance.
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Evaluation of the Effect of Microporous Sublayer Design and Fabrication on Performance and Adhesion in PEM Fuel Cell Assemblies
… exchange membrane fuel cell (PEMFC) contains a layer called the microporous sublayer (MSL). The MSL is a mixture of carbon black and polytetrafluoroethylene (PTFE), which is typically applied to the gas diffusion layer (GDL). The composition (wt.% PTFE) and loading (mg/cm2) can be varied to …
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Evaluation of the Effects of Microporous Layer Characteristics and Assembly Parameters on the Performance and Durability of a Planar PEM Fuel Cell
… and optimizing the functions of the microporous layer (MPL). Researchers have found that including this layer, composed of carbon black and TeflonTM (PTFE), between the gas diffusion layer (GDL) and catalyst layer (CL) of PEMFCs improves performance. The major benefit of the MPL in conventional …
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Thermal Analysis and Cation Doping of Nafion Membranes
… studied for</p> <p>comparison. Virgin and used gas diffusion layer (GDL), catalyst coated membrane</p> <p>(CCM), and uncatalyzed membrane (UCM) materials were examined to aid in single cell</p> <p>post-test characterization where separation of materials is difficult and may alter results.</p> …
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The modification of fuel cell-based breath alcohol sensor materials to improve water retention of sensing performance
… significantly less water. Finally, the catalyst layer and gas diffusion layer (GDL) were investigated. For the catalyst layer, platinum black and 20% platinum supported on carbon achieved similar results. The choice of catalyst was less of an issue than the choice of GDL. It was found that using …
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Water management strategies for polymer electrolyte fuel cells (PEFCs) employing microchannel flowfields
… The build-up of liquid water inhibits reactant gas transport to the catalyst layer, leading to a phenomenon called flooding. Flooding causes a rapid drop in cell voltage and is detrimental to fuel cell performance and durability. Microchannel flowfield designs possess characteristics which could …
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Porous titanium felts as alternative metal gas diffusion layers for low temperature PEM fuel cells
… production. A key component of the PEMFC is the gas diffusion layer (GDL) which facilitates reactant transport and water management within the cell. The GDL is conventionally carbon-based which makes it susceptible to degradation during operation within the oxidative environment of the PEMFC. …
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Carbon Dioxide Capture Conversion via Calgary Framework CALF-20: Catalytic Process design and Optimization
… CO? to ethylene C2H4. Carbon fiber sheet Gas-Diffusion Layer (GDL) was used as a platform to conduct the current and support the MOF and Cu catalyst for CO? capture and electrochemical reduction reaction, respectively. One side of the GDL was coated with Zinc-based MOF. The MOF layer …
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Investigation of Water Transport Parameters and Processes in the Gas Diffusion Layer of PEM Fuel Cells
… the water transport characteristics of the gas diffusion layer (GDL) of proton exchange membrane fuel cells (PEMFCs). Additionally, experimental fixtures and procedures for the determination of the constitutive relationships are presented. The water transport relationships are incorporated …
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Investigation of Novel Gas Diffusion Media for Application in Pem Fuel Cell Ribbon Assemblies
… The fuel cell ribbon architecture relies on the gas diffusion layer (GDL) to conduct electrical current in-plane to adjacent cells or collector terminals. The potential advantages of the fuel cell ribbon architecture with respect to conventional fuel cell stacks include reduced manufacturing …
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Technoeconomic and mechanistic insights into the electroreduction of carbon dioxide to value added chemicals
… of fossil fuels such as coal, oil, and natural gas. However, the increased utilization of fossil fuels has come with a penalty: a rapid rise in the atmospheric carbon dioxide (CO2) levels, especially in the past few decades, with the daily average value crossing and staying above the 400 ppm …