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Skip to Search Results- 21Secanell, Marc (Mechanical Engineering)
- 1Bergens, Steven (Chemistry)
- 1Carey, Jason (Mechanical Engineering)
- 1Karan, Kunal (Chemical Engineering)
- 1Lagravère, Manuel (Orthodontics)
- 1Minev, Petar (Mathematical and Statistical Sciences)
- 1Balen, Chad A
- 1Beaulieu, Eric J.
- 1Dietrich, Nicholas H
- 1Dobson, Peter
- 1Domican, Kailyn P
- 1Ezquerra Silva, Elena
- 3Inkjet printing
- 3water management
- 2Finite-element-method
- 2Polymer electrolyte fuel cells
- 2Pore size distribution
- 1Additive manufacturing
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Fall 2011
Computer modeling is critical for catalyst layer (CL) design in polymer electrolyte membrane fuel cells. Water-filled and ionomer-filled agglomerate models have been suggested as representations of the CL microstructure. In this thesis, improved water-filled and ionomer-filled agglomerate models...
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Analysis of an Open-Cathode Fuel Cell Stack in an Enclosure for Varying Operating Conditions
DownloadSpring 2013
Open-cathode polymer electrolyte fuel cell (PEFC) stacks use hydrogen as a fuel, are a high efficiency power source, and do not produce CO2, NOx, SOx, or particulate matter. When used as a remote power source, the PEFC stack must be protected from adverse environmental conditions. To provide...
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A MIXED WETTABILITY PORE SIZE DISTRIBUTION MODEL FOR THE ANALYSIS OF WATER TRANSPORT IN PEMFC MATERIALS
DownloadFall 2013
Mateo Villanueva, Pedro Abdiel
Water management on proton exchange membrane fuel cells is one of the biggest issues that stop the effective commercialization of this promising technology. Due to water flooding, the performance of fuel cells decays rapidly at high current densities. To better design fuel cell electrodes, a...
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Experimental and Theoretical Investigation of Solar Molten Media Methane Cracking for Hydrogen Production
DownloadFall 2014
Canada is the largest H2 consumer per capita in the world, giving a strong market demand for H2. H2 is commercially produced using steam CH4 reforming, which is energy and CO2 intensive. Solar molten metal CH4 cracking is an alternative zero emissions technology. Solar radiation is focused with...
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Fall 2014
An experimental set up based on a diffusion bridge is developed to accurately determine the in-plane and through-plane permeability, Knudsen diffusivity and effective molecular diffusivity of gas diffusion layers used in PEFC. The parameters are estimated under various compression levels in...
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Mathematical modeling and experimental validation of thin low platinum content and functionally graded cathode catalyst layers
DownloadFall 2014
Low catalyst content remains a key requirement for the commercialization of polymer electrolyte fuel cells (PEFCs) into the energy, transportation, and material handling sectors. Understanding the fundamental phenomena reducing fuel cell performance at various stages of operation play a major...
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Voxel-Based Iterative Registration Method using Phase Correlations for Three-Dimensional Cone-Beam Computed Tomography Acquired Images
DownloadFall 2016
In orthodontics superimposition is an important technique allowing for accurate diagnosis and treatment planning. Lower radiation, three-dimensional, cone-beam computed tomography allows for acquisition of three-dimensional patient scans. New superimposition methods are used compared to the...
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Fall 2016
Polymer electrolyte fuel cells (PEFCs) operate with a ternary mixture of fuel and reactants. The majority of numerical models in the literature, including the in-house Open-source Fuel Cell Simulation Toolbox (OpenFCST) software, use Fick’s law of diffusion which is only valid for binary...
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Spring 2016
Heterogeneous materials are omnipresent in several critical engineering applications such as polymer electrolyte fuel cells (PEFCs), coal bio-conversion process, geological storage of CO2 and membrane water filtration. These applications rely on physical processes such as transport (e.g., mass,...
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Fall 2016
The success of commercial applicability of polymer electrolyte fuel cells (PEFCs) depends on the cost competitiveness with respect to current energy sources. A major fraction of the system cost can be mitigated by reducing the amount of platinum (Pt) catalyst in the electrodes and by improving...