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 14 of 14 for “"volumetric energy density"”.
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Searching for Mixed Octahedral-Tetrahedral Interstitial Hydrogen Occupation in Pd-Ti Sublattices: A Computational Study
… technologies promising a revolution in the energy industry if volumetric energy density is increased, the loading of hydrogen to high concentrations in metal lattices has become of special interest. Here we use Projector Augmented-wave density functional theory methods to search the Pd-Ti-H …
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Pneumatic battery : a chemical alternative to pneumatic energy storage
… in a pressurized vessel. This method of energy storage is analogous to an electrical capacitor. This study sought to create an alternative pneumatic device, the pneumatic battery, that would be analogous to an electrical battery. A pneumatic battery allows energy to be stored chemically …
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Salt hydrates for thermochemical energy storage
Thermal energy storage is required to address the growing energy demands worldwide. Energy storage improves performance and reliability, increases efficiency and reduces the mismatch between supply and demand of renewable energy sources. In particular, thermochemical energy storage has a high …
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Effects of Stack Pressure on High Performance Lithium-Ion Batteries
… their high packing efficiency and therefore high volumetric energy density; however, the non-rigid casing provides an additional design parameter to consider. Previous works have shown that applying mechanical pressure to the through-plane surface of pouch cells can have both beneficial and …
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Short-term supply chain management in upstream natural gas systems
… supply chains. These features arise from the low volumetric energy density of natural gas and the significance of gas quality and pressure in supply chain operations. Contracts play a central role in the entire supply chain due to high capital cost, specificity and investment risks associated with …
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Grain boundary engineering in additively manufactured polycrystalline materials
… materials by increasing the fraction of low-energy grain boundaries. However, conventional GBE relies on complex cycles of mechanical deformation and annealing, which is incompatible with the precision-engineered geometries of near-net-shape AM parts. Consequently, integrating GBE into AM …
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Development of a Hydrogen Producing Thermal Control for Chemical Hydrogen Storage
… average, approximately 10% of the available heat energy was transferred to the metal hydride, and the hybrid reactor operated with gravimetric and volumetric energy densities of 0.27 kWh·kg-1 and 1.29 kWh·L-1 respectively. If the hybrid reactor is used solely to control peak temperatures, the …
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In Situ Alloying of Titanium via Laser Powder Bed Fusion
… a strength–ductility trade-off influenced by volumetric energy density and heat treatment pathways, highlighting the limitations of simple powder blends. To overcome this trade-off, a core–shell Ti@Cu feedstock was developed. The engineered powders achieved uniform Cu distribution and resulted …
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Investigations on Latent Thermal Energy Storage for Concentrating Solar Power
Thermal energy storage (TES) in a concentrating solar power (CSP) plant allows for continuous operation even during times when solar radiation is not available, thus providing a reliable output to the grid. Energy can be stored either as sensible heat or latent heat, of which latent heat storage is …
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Numerical investigation of ion transport mechanisms in electrochemical energy storage devices: Similarity correlation and exergy destruction analysis
The shift towards renewable sources of energy requires the development of electrochemical energy storage solutions due to their scalability and ability to handle intermittency. In this thesis, the ion transport mechanisms are studied by modeling redox flow batteries (RFBs) and intercalation-based …
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Investigation of lithium-air battery discharge product formed on carbon nanotube and nanofiber electrodes
… of applications including those related to energy storage. Li-air (Li-O₂) batteries have received much interest recently because of their very high theoretical energy densities (3200 Wh/kgLi2O₂), which make them ideal candidates for energy storage devices for future fully-electric vehicles. …
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Investigating the Interfacial Evolution of Lithium Metal in Anode-Free Batteries with Liquid and Solid-State Electrolytes
… vehicles (EV) market. However, increased energy density and specific energy are necessary to facilitate further expansion of EV market share and for emerging technologies such as electric flight. A promising avenue to achieve this is by replacing conventional graphite anodes in LIBs with …
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Improving energy and power densities of three-dimensional next generation secondary battery electrodes
… good full-electrode gravimetric capacity and volumetric capacity.
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Mechanisms of Liquid-Metal-Activated Aluminum-Water Reactions and Their Application
… fuels. Water-reactive aluminum is a promising energy storage material given its ability to generate hydrogen and heat at a high volumetric energy density. Accounting for only the hydrogen released in this aluminum-water reaction, energy densities up to 36.3 MJ/L can be achieved, compared to 7.2 …