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 55 for “"Anode materials"”.
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Anode Materials for High Power Microwave Devices
… nonlethal directed energy weaponry. Cathodes and anodes are the two critical components and the engine of the HPM which makes this application possible. The decay of these components during HPMs operation undermines its operational efficiency and is what is stopping the transition of HPMs from …
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Interfacial adhesion of thin film high energy density anode materials
… of numerous three-dimensional (3D) structured anodes that can leverage the incredible Li storage capacity of silicon. A common feature among many 3D structured anodes is the use of a nickel (Ni) current collector scaffold coated with amorphous silicon (a-Si) active material. Despite the …
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Candidate anode materials for iron production by molten oxide electrolysis
… oxygen gas, as well as iron and silicon raw materials on the Moon. MOE produces iron by electrolysis of an iron oxide containing electrolyte. The electrolysis results in the production of pure iron metal at the cathode and pure oxygen gas at the anode. Because of the low vapor pressure of the …
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Ab Initio Anode Materials Discovery for Li- and Na-Ion Batteries
… structure searching method (AIRSS), to study anode materials for lithium- and sodium- ion batteries (LIBs and NIBs, respectively). Initial work relates to a theoretical structure prediction study of the lithium and sodium phosphide systems in the context of phosphorus anodes as candidates for …
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The electrochemical behaviour of zinc-cadmium based anode materials in potassium hydroxide
A review is presented on the historical background to the development of primary cells, their performance characteristics and their fundamental electrochemistry.
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High-resolution spatial profiling of structural and thermal properties of anode materials
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01
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Development of High-performance Carbon and Phosphorus Anode Materials for Sodium-ion Batteries
… necessary to pursue high-performance electrode materials to remedy these intrinsic defects. For anode materials, the primary choices of sodium metal and graphite are correspondingly denied for safety issues and intercalation incapability. Therefore, the objective for this doctoral work is to …
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Characterization of battery anode materials by X-ray and electron-based imaging techniques
… life time and lower costs. Li batteries based on anode materials with higher specific capacity (e.g. silicon and lithium) could potentially boost the energy density of Li batteries. In this dissertation, X-ray and electron-based imaging techniques were used to investigate the currently existing …
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Ab Initio Prediction of Metal Phosphide Anode Materials for Lithium and Beyond Lithium Batteries
Identifying high capacity battery materials is critical for creating better energy storage to lower our reliance on non-renewable energy resources. While Li-ion batteries are the state-of-the-art, their graphite anodes are limited by a theoretical capacity of 372 mAh/g. Phosphorus is one …
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NMR and neutron total scattering studies of silicon-based anode materials for lithium-ion batteries
… charge storage capacity of graphite, the anode material used in most commercially-available lithium-ion batteries. Replacing graphite with silicon therefore promises a substantial improvement over the state-of-the-art in electrochemical energy storage. However, it has proved difficult to …
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NMR Studies of the Electronic Structure, Lithium-Ion Dynamics, and Prelithiation of Lithium-Ion Battery Anode Materials
… A Li-ion battery has two types of electrodes, anodes, and cathodes. This work focuses on anodes, specifically graphite and Si anodes. Si anodes have a high theoretical capacity (3579 mAh/g), nearly 10 times more than graphite) and a low (0.1 - 0.4 V vs Li/Li+) operating voltage. However, Si …
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Development of novel redox stable anode materials and their suitability for use in intermediate temperature solid oxide fuel cells
… development of novel electrolyte and electrode materials is deemed to be essential for SOFC performance optimisation at intermediate temperatures. Iron-based perovskites were previously overlooked as anode materials due to their instability in reducing atmospheres at SOFC operating temperatures, …
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Polarization, passivation, intercalation, and generation: an examination of In-Situ and Ex-Situ analytical techniques for the study of carbon anode materials for the electrochemical generation of elemental fluorine.
… fluorine gas. This work examines various carbon materials for their use as electrodes in the electrochemical generation of elemental fluorine. An experimental apparatus was designed and constructed to melt and maintain the temperature of the KF·2HF electrolyte in a suitable range for …
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Cr-Ga-N materials for negative electrodes in Li rechargeable batteries : structure, synthesis and electrochemical performance
… Cr3GaN) in the Cr-Ga-N system as possible future anode materials for lithium rechargeable batteries were studied. Motivation for this study was dealt in chapter 2 following chapter 1 that covered introduction to batteries, lithium ion batteries and anode materials for lithium ion batteries. …
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Phase transformations and microstructural design of lithiated metal anodes for lithium-ion rechargeable batteries
… great recent interest in lithium storage at the anode of Li-ion rechargeable battery by alloying with metals such as Al, Sn, and Sb, or metalloids such as Si, as an alternative to the intercalation of graphite. This is due to the intrinsically high gravimetric and volumetric energy densities of …
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Arsenic Removal From Drinking Water By Electrocoagulation
… that involves electrolytic oxidation of anode materials and in-situ generation of coagulant. Electrocoagulation is an alternative to using chemical coagulants for arsenic removal and thus is beneficial for communities with better access to electricity than to chemicals.
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Ceramic-Based Anodes for Solid Oxide Fuel Cells
… in SOFCs lies in the design and development of materials and catalysts for the SOFC anode. The objective of this study is to explore ceramic-based anode materials to meet the basic requirements of SOFCs operating in sulfur-containing hydro-carbon fuels. In this study, both LaGaO3 and …
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Understanding the solid electrolyte interface (SEI) on alloying anodes: development of a methodology for SEI sample preparation and x-ray photoelectron spectroscopy characterization and studies of the SEI on electrodeposited thin film intermetallic anodes for Li-ion batteries
… of the SEI are even more pronounced for alloying anode materials, and the mechanical and chemical instability of electrode surfaces and the SEI formed from conventional secondary battery electrolytes is one of the bottlenecks in the development of next generation battery technologies. The first …
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Nuclear Magnetic Resonance Studies of Electrode and Electrolyte Materials for Li-Ion Batteries
… used to study lithium electrode and electrolyte materials for advanced rechargeable lithium ion batteries. Three projects are described in this thesis. The first involves <sup>23</sup>Na and <sup>37</sup>Al static and magic angle spinning NMR studies of NaAlH<sub>4</sub>/C anode materials for …
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