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Showing 1 to 20 of 28 for “"INTERFACIAL REACTIONS"”.
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Kinetics of Polymer Interfacial Reactions
… factors associated with the kinetics of polymer interfacial reaction, and these challenges are especially prominent in the field of surface modification. In this thesis, different challenges were addressed to explore click reaction kinetics of end functional reactants (small molecules and …
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Investigation into key interfacial reactions within lithium-ion batteries
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2016-07-07 without embargo terms
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Interfacial Reactions in Lead-Oxide Bearing Enamel - Metal Systems
Made available in DSpace on 2014-12-10T17:32:35Z (GMT). No. of bitstreams: 1 6511788.pdf: 2685646 bytes, checksum: 0b2cf4c075603c729f79b8f5e41a0f88 (MD5) Previous issue date: 1965
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NMR Studies of Interfacial Reactions in Lithium-Ion Batteries
… to electric vehicles. Preventing the parasitic reactions between the electrodes (positive and negative) and the electrolyte solution, is essential for enabling longer lasting lithium-ion batteries. In this work, solution- and solid-state nuclear magnetic resonance (NMR) methodologies are …
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Revealing Interfacial Reactions and Charge Transfer Kinetics in Electrochemical Energy Storage and Conversion
… interface, where (electro)chemical surface reactions or intercalation reactions occur, and its thermodynamic and kinetic properties determine the energy density, power density, and lifetime of the electrochemical devices. However, the molecular structures at the interface and how they …
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Thermal processing and the evolution of composition, structure and properties for sol-gel derived lead zirconate titanate thin layers
… conversion. In addition, the effects of interfacial reactions, and residual stresses on the measured properties were also considered. The purpose of the work was to contribute to the fundamental understanding of processes which occur during the high temperature treatment of sol-gel …
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Ultrahigh Vacuum Studies of the Reaction Mechanisms of Ozone with Saturated and Unsaturated Self-Assembled Monolayers
… to develop a more complete understanding of the interfacial reactions of ozone with vinyl-containing organic thin films, self-assembled monolayers that contain vinyl groups positioned precisely at the gas/surface interface were synthesized as model systems for atmospheric organic aerosols. To …
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Dynamics of Atmospherically Important Triatomics in Collisions with Model Organic Surfaces
… into the dynamics and mechanisms of important interfacial reactions. A thorough understanding of the fundamental interactions between a gas and surface is crucial to the study of heterogeneous chemistry of atmospheric organic aerosols. In addition to changing the chemical and physical …
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Thermodynamic modelling as applied to the development of TRIP-Matrix-Composite materials: The Fe–Mg–Mn–Ti–Zr–O system
… calculations have been performed to predict interfacial reactions within the composite material as well as to made recommendations for the design and further development of production processes for TRIP-Matrix-Composite materials.
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IN SITU SPECTROSCOPY INVESTIGATION OF ALKALI METAL INTERACTION MECHANISM WITH ORGANIC SEMICONDUCTOR FOR STABILIZING ALKALI METAL ANODES
… for SMAs, a comprehensive investigation of the interfacial reactions between sodium metal and protective materials with different functional groups is necessary. Aiming to address this gap, we conducted three in-situ investigations through surface techniques, using organic semiconductor model …
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Ohmic Metallizations to Aluminum Gallium Nitride/gallium Nitride High Electron Mobility Transistors: Electrical and Microstructural Studies
… of this work include: (1) Elucidated the interfacial reactions between Al, Ti, AlTi alloy, and Ti/Al/Mo/Au on GaN. (2) Explained the electrical performance of Ti/Al/Mo/Au on AlGaN/GaN based on microstructural investigations. Proposed a ""spike"" mechanism. (3) Identified the role of other …
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Thermodynamics and kinetics of ceramic/metal interfacial interactions
… phases likely to take part in the ceramic/metal interfacial interactions studied were developed. Phase diagram data and thermochemical information were critically assessed and use to adjust the thermodynamic parameters that allowed the description of the Ag-Cu-Ti, Cu-Ti-Zr, Ti-Zr-O, Cu-Ti-O and …
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ATOMISTIC SIMULATION AND FIRST PRINCIPLES CALCULATION OF INTERFACIAL ENERGETICS OF GALVANIZED ADVANCED HIGH STRENGTH STEELS
… During hot-dipping, complex metallurgical reactions happen. As a result, a Zn coating consisting of inhibition layer, Fe-Zn intermetallics and Zn overlay forms. The oxides formed during annealing will influence the metallurgical reactions and may lead to galvanizing defects such as pinholes …
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Interactions of the Air Electrode with Electrolyte and Interconnect in Solid Oxide Cells
… interconnect materials — including solid state interfacial reactions and vaporization/deposition of some volatile elements — have been investigated in the simulated SOC operating environment. The interactions demonstrate the material degradation mechanisms of the cell components and the effects …
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Reactive processing methods for functionalisation of polymers and in-situ compatibilisation of poly(ethylene terephthalate)-based blends
… on the grafting yields and the extent of side reactions were investigated. Precipitation method and Soxhlet extraction method was established to purifY the GMA modified rubbers and the grafting degree was determined by FTIR and titration. It was found that without TRlS the grafting degree of …
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Co2MnSi Heusler alloy thin films
… layers. However, this was not the case because interfacial reactions resulted in the formation of an epitaxial Mn-As region, and a thin interfacial layer that was Co-Ga rich. This prevented the lattice matching of the Co2MnSi to the GaAs(001) hence hindering epitaxial growth of the Heusler. The …
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Characterizing mass transport and crossover reactions in Li-air batteries
… to the other, resulting in capacity loss and interfacial reactions. The interplay between mass transport and crossover of redox active species from one electrode has not been extensively discussed in literature and requires detailed characterization. In this work, mass transport effects and …
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Understanding the Chemistries of Ni-rich Layered Oxide Materials for Applications in Lithium Batteries and Catalysis
… loss, and undesirable oxide cathode-electrolyte interfacial reactions. Each of these phenomena contribute to complex electrolyte decomposition pathways and oxide cathode structural distortions. Structural instability leads to poor battery performance metrics including specific capacity fading and …
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Ultrahigh Vacuum Studies of the Reaction Kinetics and Mechanisms of Nitrate Radical with Model Organic Surfaces
… of the kinetics and mechanisms of heterogeneous reactions between gas-phase nitrate radicals, a key nighttime atmospheric oxidant, and organic particles will enable scientists to predict the fate and lifetime of the particles in the atmosphere. In an effort to acquire knowledge of interfacial …
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