Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Gas Diffusion Electrodes"”.
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Engineering gas diffusion electrodes for electrochemical carbon dioxide upgrading
Electrochemical carbon dioxide reduction (CO2R) is increasingly recognized as a viable technology for the generation of chemicals using carbon dioxide (CO₂) recovered from industrial exhaust streams or directly captured from air. If powered with low-carbon electricity, CO2R processes have the …
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Gas diffusion electrodes and operating conditions for electrochemical energy storage applications
… of CO2 electrolyzers need to be raised by making electrodes and catalyst efficient enough for commercialization. This dissertation starts with discussing the interplay between cathode performance and CO2 concentration in the feed as well as electrolyte pH (Chapter 2). Use of diluted feed elevates …
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Multiscale modelling of CO₂ Electroreduction on Cu - based gas diffusion electrodes (GDEs)
… by water and renewable energy (solar and wind). Gas diffusion electrodes (GDEs) are an important component of the electrochemical cell employed to conduct this reaction. Compared to other electrocatalysts used for CO₂RR, copper electrocatalysts have the advantage of producing several products in …
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Bio-engineered gas diffusion electrodes (GDEs) for proton exchange membrane fuel cells (PEMFCs)
… incorporation of biohydrometallurgy in producing Gas Diffusion Electrodes (GDEs) for PEM Fuel cell applications. The biomineralisation and subsequent catalytic activity of spin coated engineered biofilms is investigated, as is the use of planktonic cell generated bio-catalysts in traditional GDE …
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Durability and degradation of gas diffusion electrodes for the electroreduction of CO2 to fuels
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-05-01
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Electrochemical conversion of CO2 on Gas Diffusion Electrodes: bridging the gap between research and industrial application
L'abstract è presente nell'allegato / the abstract is in the attachment
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Microscopic and spectroscopic characterization of fuel cell catalyst layer materials and interfaces
… properties of a series of roll-to-roll coated gas diffusion electrodes comparing them to spray coated electrodes. Cathode catalyst layer surface properties, including surface roughness and surface texture features, as well as elemental composition (ionomer content relative to Pt) at the top …
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Enhancement of Platinum Cathode Catalysis by Addition of Transition Metals
… of relevant electrocatalysts directly on gas diffusion electrodes, indicating an oxygen reduction activity of Pt3 Co/Mo which is slightly better than that of Pt3Co and Pt black. In terms of fuel cell performance, all the cathode catalysts showed good short-term stability and …
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Digital Chemical Engineering Across Scales and Domains: Case studies in electrochemistry, automated labs, and reticular materials
… ultra-sensitive product analysis of high-current gas-diffusion electrodes to independently probe mechanistic complexity. Together, these approaches reveal complex branching behaviour and previously unreported multi-carbon products, refining our mechanistic picture of CO2 electroreduction. The …
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Emerging Electrochemical Technologies: Advanced Engineering Design
… methods in the chemical industry, and (b) gas diffusion electrolysers used in various emerging industrial applications that deal with gaseous reactants. The study uses a combination of analytical solutions and numerical simulations to shed light on the underlying physical and chemical …
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Development of a lithium-mediated nitrogen reduction process
… ammonia production. We found that the rate of diffusion of nitrogen through both the solid-electrolyte interphase (SEI) and the bulk electrolyte generally defines ammonia production rates and selectivities. To overcome diffusion limitations in the bulk electrolyte, solvent-agnostic gas …
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The Leaching of Cobalt in Platinum-Cobalt Fuel Cell Catalysts
… in order to obtain a high magnetic signal. The electrodes were taped to the sample holder which was clamped to the arm of the oscillating arm of the magnetometer and aligned. Data of magnetisation as a function of magnetic field strength were used for calibration as well as electrode leaching …
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Microfluidic platforms for the investigation of fuel cell catalysts and electrodes
… fuel cell components, particularly catalysts and electrodes, within operating fuel cells is critical to designing robust, inexpensive configurations that are required for commercial introduction. Such detailed in-situ investigations of individual electrode processes are complicated by other …
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Developing durable electrodes for selective electroreduction of CO2 to value-added intermediates
… increases comes higher pollution and greenhouse gas emissions from processes established to meet the needs of and to support the population. Specifically, rising excess carbon dioxide (CO2) emissions (over 14 Gt CO2 per year) has pushed the atmospheric CO2 concentration to over 400 ppm. This high …
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Investigation of contaminant effects and cathode catalysts in microfluidic fuel cells
… components that can easily be swapped to test electrodes, electrolyte, or other aspects of the fuel cell. A reference electrode placed at the outlet allows for individual electrode analysis, which is not normally possible in conventional membrane-based fuel cells. External control over the …