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 “"energy storage materials"”.
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NMR Studies of Aqueous-Electrolyte Ion Sorption in Energy Storage Materials
… the key underlying process for electrochemical energy storage, electrochemical separations, and electrocatalytic applications involving aqueous electrolytes. However, the impact of charged species including hydronium (H<sub>3</sub>O<sup>+</sup>) and hydroxide (OH<sup>-</sup>) on the ion …
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Study Of Tin-Based Electrodes And Ionic Liquid Electrolytes For Energy Storage Materials
<p>Due to rapid increase in energy demand, modern society necessitates to develop high power, light-weight, and more economical energy storage systems. Rechargeable Li-ion batteries and Li-oxygen batteries have become the most promising energy devices in terms of energy and power densities. Diverse …
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CRYOGENIC MICROSCOPIES OF ENERGY STORAGE MATERIALS: INSIGHTS INTO METAL ANODES, SOLID-ELECTROLYTE INTERFACES, AND MXENES
The escalating global energy demand has intensified the pursuit of high energy density storage technologies, focusing on metal anode systems that promise higher energy density at lower cost. This dissertation presents comprehensive research that advances our understanding of energy storage …
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Machine learning transferable physics-based force fields using graph convolutional neural networks
… of a system to be determined from its potential energy surface (PES). In the domain of crystalline materials, the PES is needed for electronic structure calculations, critical for modeling semiconductors, optical, and energy-storage materials. While first principles techniques can be used to …
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Investigation of Novel Electrolytes for Use in Lithium-Ion Batteries and Direct Methanol Fuel Cells
<p>Energy storage and conversion plays a critical role in the efficient use of available energy and is crucial for the utilization of renewable energy sources. To achieve maximum efficiency of renewable energy sources, improvements to energy storage materials must be developed. In this work, novel …
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Variable Pressure Nuclear Magnetic Resonance Studies of Ionic Liquids and Electrophoretic Probe Design
<p>Energy storage materials play a key role in, efficient, clean, and versatile use of energy, and are crucial for the exploitation of renewable energy. The improve efficiency of energy use stimulates the development of energy storage such as batteries or super capacitors, toward higher power and …
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Nuclear Magnetic Resonance Studies of Imidazolium-Based Ionic Liquids and Garnet-Type Li7La3Zr2O12
<p>Advancements in electrochemical energy storage materials are critical in the development and utilization of renewable energy technologies. These advancements involve obtaining a better understanding of electrochemical mechanisms and properties through scientific research towards an improved …
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Understanding and engineering azobenzene for thermal energy storage
… which holds unique properties for thermal storage applications. The azobenzene molecule undergoes structural change into a metastable state which has the ability to store energy. This thesis utilizes the energy storage and structural change properties of this molecule to develop new …
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Spatially resolved ionic measurements with scanning electrochemical microscopy
Modern electrochemical energy storage systems operate by the concerted shuttling of electrons and cations between a cathode and an anode. Strategies for looking at this process do not have a direct measure of ion movement as it occurs, and thus do not provide essential mechanistic details for …
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First principles study of structure and lithium storage in inorganic nanotubes
… interface with considerably less strain. An energy component model is parameterized with atomistic calculations to compare nanotubes with a circular and polygonal cross section. The model shows that for TiS2 nanotubes with some chiralities the radius at which a polygonal shape becomes …
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FIRST-PRINCIPLES SIMULATIONS OF SOLID STATE BATTERY MATERIALS
In this work materials with possible applications in all solid state Li-ion batteries are explored using computational methods within the framework of density functional theory and kinetic Monte Carlo. The density functional theory simulations use fundamental quantum mechanics along with some …
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Impact of Structure and Defect Modification on Vanadium Oxide for Alkali-ion Battery Electrodes
… progression of improved technologies related to energy distribution and storage. However, energy storage materials and devices have come to be viewed as a crux impeding advanced device development. Alkali-ion, namely lithium and sodium, batteries are a robust technology that has seen gains in …
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Harnessing Light-Responsive Structural Control in Surfactant Assemblies
… for the next generation of smart, responsive materials. To create functional materials, lyotropic liquid crystals (LLCs) are ideal candidates due to their hierarchically-ordered nanostructures that are highly sensitive to their environment. LLCs are formed from the self-assembly of surfactants …
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Electrically charged thermal energy storage systems for grid-level electricity storage
… to their intermittency. A change in methods of energy production globally that allows synergistic coupling of renewable and fossil fuels is needed. Currently, pumped hydroelectric and compressed air energy storage are the two most common methods of storage, but are highly geographic dependent …
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Phase Diagram Determination of (2-Amino-2-Methyl-1, 3-Propanediol) AMPL-TRMP (Trimethylolpropane) Binary System
Organic "Plastic Crystal" Thermal Energy Storage (TES) Materials are characterized by unusually large entropies of solid-solid transition compared to their entropies of fusion. In this research program, we investigate the thermal behavior of a binary AMPL-TRMP system and develop a …
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Azomethine-Containing Moieties for Simple and Degradable Conjugated Polymers
… diodes, thin film transistors, biosensors, and energy storage materials. They have received significant attention from many researchers because they are relatively inexpensive and possess a high degree of synthetic tailorability that enables tuning of optical, electrochemical, and physical …
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The development of a portable vessel for the collection, storage, and utilization of solar thermal energy for household use
… impact our environment. In addition, the energy impoverished spend 25% of their income on household fuels. Solar energy can provide a solution and do so in a culturally appropriate manner. Stored solar thermal energy can provide an option to: cook at any time or place; replace the fuel and …
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CFD Modeling and Optimization Analysis of Thermal Energy Storage Based Solar Collectors
… with and without the integration of phase change materials (PCMs) is performed. In order to cross-validate the obtained results from CFD and recent experimental analysis, the boundary conditions are set as the field-testing data. The simulation results show an acceptable agreement with the …
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Custom engineered nanomaterials for energetics and energy applications
… work, preparation and characterization of nanomaterials used for several energetics and energy applications are addressed. The main challenge of this effort is to design and prepare nanomaterials which have significant improvements associated with combustion dynamics, reaction rates, …
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Electrochemical mechanisms in nano-structured graphitic and redox-active polymeric architectures
… efficient and low-cost electrochemical energy storage and conversion systems for stationary and transportation applications. Understanding the detailed electrochemical mechanisms in energy-related materials with new designs and modification methods will help us break the ceiling of …
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