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.
Results
Showing 1 to 20 of 26 for “"electrochemical conversion"”.
-
Modeling of the electrochemical conversion of CO2 in microfluidic reactors
… by carbon-neutral electricity sources, the electrochemical conversion of CO2 into value-added chemicals offers an economically viable route to recycle CO2 towards reducing CO2 emissions and reducing dependence on fossil fuels. The majority of prior studies on the electrochemical conversion …
-
Combined CO₂ capture and electrochemical conversion in non-aqueous environments
… a new strategy for integrating CO₂ capture and conversion into a single process stream.
-
Electrochemical conversion of a fluorinated greenhouse gas using a lithium battery configuration
… for technological advancement of greenhouse gas conversion and mitigation strategies is ever increasing. In this thesis, a non-aqueous electrochemical platform with metal lithium (Li) as the anode and carbon as the cathode has been developed to convert the most potent greenhouse gas, sulfur …
-
Molten Alkali Metal Borate/Carbonate Salts for High Temperature CO₂ Capture and Electrochemical Conversion
… molten salts have been developed as a medium for electrochemical conversion of CO2 into value-added carbonaceous materials, including carbon nanotubes (CNTs). While electricity requirements are significant, the high economic value of CNTs make these processes potentially appealing both as a means …
-
Catalysis and reactor engineering for the electrochemical conversion of carbon dioxide to carbon monoxide
… electricity provides impetus for exploring electrochemical methods to recycle CO₂ in cost-competitive and sustainable ways. Researchers have experimentally demonstrated CO₂ transformations into a variety of industrially relevant materials. Techno-economic assessments inform that the simplest …
-
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
-
An Investigation of Different Methods of Fabricating Membrane Electrode Assemblies for Methanol Fuel Cells
Methanol fuel cells are electrochemical conversion devices that produce electricity from methanol fuel. The current process of fabricating membrane electrode assemblies (MEAs) is tedious and if it is not sufficiently controlled can be very imprecise. The optimization of this process is paramount to …
-
Technoeconomic Analysis and Design of CO₂ Capture and Conversion Systems
Carbon capture and conversion technologies must become economically viable and scale to the gigaton level by 2050 to avoid the most serious effects of a climate crisis. Here we present a techno-economic analysis of two promising capture and conversion technologies: CO₂ capture from ocean waters via …
-
Electrochemical oxidation and reduction of 5-hydroxymethylfurfural in alkaline water electrolyzers
… this reason, in addition to scale-up problems in electrochemical cells, this work deals with the electrochemical conversion of HMF in anion exchange membrane water electrolyzers. Specifically, the oxidation of HMF is catalyzed by nickel-based layered double hydroxides. Here, the NiFe(-Cl-)-LDH@NF …
-
Architectures for individual and stacked micro single chamber solid oxide fuel cells
Solid oxide fuel cells (SOFCs) are electrochemical conversion devices that convert various fuel sources directly into electrical energy at temperatures ranging from 600°C to 1000°C. These high temperatures could potentially allow the direct use of various hydrocarbon fuel sources and hydrogen, …
-
Thermodynamic stability and activity volcano for perovskite-based oxide as OER catalyst
… reaction (OER) is crucial for the development of electrochemical conversion technologies. Recent experiments show that perovskite transition-metal oxides can exhibit high electro-catalytic activity for OER. Both binding strength of reaction intermediate and [sigma]*-antibonding (eg) orbital …
-
CERAMIC MATERIALS USED IN SOLID-OXIDE FUEL CELLS
Solid-oxide fuel cells (SOFC) are electrochemical conversion devices to convert electricity directly from oxidizing a fuel with high efficiency and low emission. . The triple-phase-boundaries (TPBs), where cathode and electrolyte make contact with gas phase, are considered to be the active sites …
-
A nickel hexacyanoferrate based thermo-electrochemical device For efficient heat-to-electricity conversion
… at low temperatures due to uneconomically low conversion efficiency. The electrochemical conversion of heat to electricity, or thermogalvanic energy conversion, had been investigated for decentralized low-temperature applications. Traditional thermogalvanic cells were capable of harvesting …
-
Catalysts Design and Reactor Engineering for Electrochemical CO2 Capture and Utilization
… advanced technologies, including carbon capture, conversion, and storage, to effectively neutralize or even reduce CO2 emissions. Significant advancements have been made in renewable grid technologies, enabling the efficient harnessing of green electricity from sources such as solar and wind …
-
Investigating the interfacial process and bulk electrode chemistry in tungsten oxide electrochromic materials
… need for high-performance electrode materials in electrochemical conversion and storage applications requires further fundamental investigation on the working and degradation mechanisms of these materials. Among various functional materials, transition metal oxides are still one of the main …
-
Amorphous Ni-based Alloys as Alkaline Oxygen Evolution Electrocatalysts
The overall efficiency of many electrochemical conversion and storage technologies, such as water electrolysis and CO2 conversion, is hindered by sluggish oxygen evolution reaction (OER) kinetics. Amorphous alloys display enhanced OER kinetics and stability over their crystalline counterparts but …
-
Amine promotion of hydrogen evolution reaction suppression and CO2 conversion for artificial photosynthesis
… greenhouse gases and global warming [1-3]. The electrochemical method is regarded as a promising means to do this because it has the advantage that water can be used as the proton source [4, 5]. However, the overpotential for electrolysis of water is low, whereas the overpotential of …
-
Comparative Electrochemistry, Electronic Absorption Spectroscopy and Spectroelectrochemistry of the Monometallic Ruthenium Polypyridyl Complexes, [Ru(Bpy)(Dpb)2](Pf6)2, [Ru(Bpy)2(Dpb)](Pf6)2, [Ru(Bpy)2(Dpq)](Pf6)2, [Ru(Bpy)(Dpq)2](Pf6)2
… impurity as determined by OSWV. Spectroelectrochemical studies were conducted with both a bulk H-cell and a ~0.2 mm pathlength, optically transparent thin layer electrode (OTTLE) cell. High reversibility (a 99%) is possible with dilute solutions (ca 10⠻⠴ M) and the OTTLE cell as …
-
Electrochemical CO2 reduction on Cucurbit[n]uril modified Gold
The electrochemical conversion of carbon dioxide with renewable electricity offers an attractive route towards sustainable fuel and chemical feedstock production. However, the reaction suffers from slow reaction kinetics, low solubility of CO2 and hydrogen formation as a competing side reaction. In …
-
Electrochemical Carbon Dioxide Reduction for Renewable Carbonaceous Fuels and Chemicals
Electrochemical CO2 reduction reaction (ECO2RR) powered by renewable electricity possesses the potential to store intermittent energy in chemical bonds while producing sustainable chemicals and fuels. Unfortunately, it is hard to achieve low overpotential, high selectivity, and activity …
Page 1 of 2