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 20 of 25 for “"Electrochemical Testing"”.
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A Rubric for Electrochemical Testing of Metallic Biomaterials
… for the failure of metallic medical implants. Testing a metal’s suseptability to corrosion prior to implantation is key to a successful implantation. Electrochemical processes were used in this study to evaluate the characteristics of corrosion of both AISI 316 stainless steel and titanium …
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Preparation and Electrochemical Testing of Flexible Carbon Nanofiber Electrodes from Electrospinning
… of other potential applications including, electrochemical storage and conversion devices, chemical sensing, and filtration. The focus of this work was electrochemical storage and conversion devices in the form of lithium ion battery anodes and cathodes as well as ionic polymer composite …
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Producing transition metal oxides as cathodes for aqueous zinc-ion batteries via Ultra-Short Laser Pulses for In-situ Nanostructure Generation (ULPING)
… poses challenges due to the need to balance electrochemical efficiency with environmental and health considerations. This thesis introduces a cutting-edge laser processing method to fabricate battery electrodes using a fiber-pulsed laser. This approach is efficient and environmentally …
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Assessing coupled mechanical behavior and environmental degradation at submicron scales
… through the combination of nanomechanical testing, high resolution microscopy, diffraction, and electrochemical testing. Nanomechanical techniques were used to isolate environmental, orientation, and size effects. Material evaluation focuses on metals, both model and engineering alloys, in …
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SiC and B₄C as electrocatalyst support materials for low temperature fuel cells
… reaction for low temperature fuel cells. Electrochemical testing, accelerated degradation studies as well as advanced characterisation techniques were used to clarify the structure-property relationships between catalyst morphology, metal-support interaction, ORR activity and surface …
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Towards reliable correlation of microporous layer physical characteristics and PEMFC electrochemical performance
… fabrication, characterization and electrochemical testing methodology for MPL research. In particular, current research places little emphasis on the effect of MEA variance on the uncertainty in MPL electrochemical performance results. In this study a methodology is developed for …
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Origami nanofabrication of three-dimensional electrochemical energy storage devices
… OrigamiTM process to create a functional electrochemical energy storage device. An electrochemical capacitor, or a supercapacitor, is selected because its performance can be readily improved by the addition of 3D geometry and nanoarchitecture. In addition to improved performance, the …
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Composite Multifunctional Lithium Ion Batteries
… vehicle. The combination of both mechanical and electrochemical aspects within one material defines the component as a multifunctional material, or in this case, a multifunctional battery. The design of the composite multifunctional batteries for optimal performance involves the proper selection …
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Parameters Influencing the Corrosion Protection Service Life of Epoxy Coated Reinforcing Steel in Virginia Bridge Decks
… duration of 3.06 years) and a nondestructive electrochemical testing was performed on each core on a monthly cycle. Cores were also inspected for surface cracks, the thermal properties of the epoxy coating, and the concrete conditions at bar depth. The concrete was tested for saturation …
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PEG-coated Fe3O4 for li-Ion battery anodes: Effects of crystallite size and surface chemistry
… chemical interactions within the electrode. Electrochemical testing demonstrates that the triethylamine-based electrode has a higher capacity and better capacity retention over 100 cycles at 0.3C as compared to the ammonium hydroxide-based electrode. With regards to differences in active …
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Fabrication and Characterization of Freeze Tape Cast Anode Supported Solid Oxide Fuel Cells
… the variables involved with this process. Electrochemical testing is performed to validate this method and its ability to produce high performing SOFCs. The microstructure and electrochemical properties were investigated. Using various methods to investigate the microstructure, an acicular …
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Superoxide-assisted solid-state synthesis of birnessite type MnO2 materials: physiochemical properties and electrochemical viability
… near future, the world looks towards advancing electrochemical energy systems that can be scaled up to meet such demands. These systems must adhere to being environmentally friendly, cost-effective, and safe. Abundant earth metals (Zn, Mn, Fe) have been looked at extensively as they meet all of …
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Atomic layer deposition and electrochemical characterization of TiO2 as a potential candidate for a photoanode protective layer
… Solar water splitting using semiconductor photoelectrochemical cells has long been viewed as a potential means of large-scale H2 production from renewable resources. A study was carried out to test the corrosion resistance performance of thin TiO2 layers deposited by means of atomic layer …
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Corrosion Behavior of Potential Structural Materials for use in Nitrate Salts Based Solar Thermal Power Plants
… the corrosion behavior of structural alloys and electrochemical testing in molten nitrate salts at three temperatures common to CSP plants. Corrosion behavior was evaluated using gravimetric and inductively-coupled plasma optical emission spectroscopy (ICP-OES) analysis. Surface morphology was …
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Corrosion Behavior of Nuclear Waste Storage Canister Materials
… due to its chemical similarity to technetium. Electrochemical behavior was evaluated using potentiodynamic polarization tests, and the surface morphology was studied using optical microscopy and scanning electron microscopy. Potentiodynamic polarization tests were conducted in 1.0M NaNO3 + 0.1M …
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Development of Electrolyte Salts for Multivalent Ion Batteries
This dissertation focuses on the synthesis and electrochemical testing of new electrolyte salts for rechargeable multivalent ion batteries. In chapters 2 and 3 the synthesis of Mg and Ca hexafluoropnictogenate salts as well as the electrochemical behaviour of Mg(PF6)2 is presented. Pure samples of …
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Photothermal and Photoelectric Effects in Lithium-Ion Batteries: Mechanistic Insights and Performance Enhancement
… selection for the shared electrode, balancing electrochemical performance and photoactivity. To start with, graphitic carbon nitride and bismuth vanadate were selected as potential photo-active materials for photo-enhanced batteries. However, they were proven to be not suitable for the …
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Slurry Chemistry Effects On Copper Chemical Mechanical Planarization
… chemical formations, various techniques, such as electrochemical testing techniques (including potentiodynamic polarization and electrochemical impedance spectroscopy), x-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and scanning electron microscopy (SEM), were applied. As a …
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Corrosion studies of stainless steel blades
… investigations are limited to electrochemical testing, with ex situ analysis of the treated steels (post-exposure analysis). The characterization of materials and their surface properties, such as texture and morphology, are not being considered in most of the studies. …
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Understanding the Chemistries of Ni-rich Layered Oxide Materials for Applications in Lithium Batteries and Catalysis
… – flame ionization detection (GC-FID) and other electrochemical testing methods are also described. Detailed experimental information obtained using the analytical methods is provided in the technical chapters. In understanding the chemistry of Ni-rich layered oxides, exploring surface …
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