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 15 of 15 for “"volumetric capacity"”.
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Solid State Studies of [ReH9]-2 Complexes from Ambient to Extreme Conditions: High Volumetric Capacity Hydrogen Storage
… hydrogen and energy storage due to their large volumetric capacity, providing a safe and efficient way of storing hydrogen. The [ReH9]-2 ion continues to captivate researchers because of its stability, unusually high oxidation state of rhenium metal (VII), D3h symmetry (tricapped trigonal …
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Fracture Toughness Based Models for the Prediction of Power Consumption, Product Size, and Capacity of Jaw Crushers
… the power consumption, product size, and volumetric capacity of jaw crushers based on fracture toughness has been proposed in this study. A new fracture toughness test, the Edge Notched Disk Wedge Splitting test, has been developed and verified in order to rapidly assess the fracture …
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Solid Waste Degradation, Compaction and Water Holding Capacity
… potential and rapid increase in landfill volumetric capacity. It also offers significant reduction in post closure management activities as leachate treatment, LFG impact on the environment and improves the potential for land reuse. The regulatory 30 year post-closure period is believed to …
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Estimating and Optimizing Throughput in an Aluminum Rolling Mill Using Capacity Modeling and Optimization Techniques
… their operations and confidently estimate future volumetric capacity they are able to sell. The objective of the internship program with CRP is to provide a quantitative analysis on the current state and future state throughput of the complex continuous line (CCL). The analysis includes a …
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Understanding and Improving Zinc Anodes for High-Energy Rechargeable Alkaline Batteries
… intrinsic safety, low cost, and high theoretical volumetric capacity (5,854 mAh cm-3). Among zinc-based batteries, Zn-air batteries are promising with high theoretical gravimetric and volumetric energy densities (1,093 Wh kg-1 and 6,134 Wh L-1, respectively). Rechargeable zinc anode has achieved …
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Organic Template-Assisted Synthesis & Characterization of Active Materials for Li-ion Batteries
… and polluting effect of cobalt (Co), and the low volumetric capacity of graphite, new materials are being sought out. LiFePO4 (LFP) and SnO2 are both good alternatives for the cathode and anode materials in Li-ion batteries. But, to create high-performance batteries, nano-sized carbon-coated …
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An analytical model to increase air volumes and minimize the Net Achieved Rate in air freight transportation
… weight. Given the main constraints in terms of volumetric capacity and maximum weight per volumetric unit, the most profitable business opportunities consist of combining in the same load compatible products with different densities. The main target is to come close as possible to the desired …
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Reduced graphene oxide nanoparticle hybrids and their assembly for lithium-ion battery anodes
… There is a growing need for LIBs with higher capacity, rate performance and cycling stability. At the anode electrode these challenges are being addressed for instance by utilising materials with higher theoretical capacity compared to graphite (372 mAh/g) or by optimising the morphology of …
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Improving energy and power densities of three-dimensional next generation secondary battery electrodes
… active material loading and electrode-based capacity. A quick and scalable colloidal templating method was developed with doctor blade casting and a real 3D (~ 50 μm) bicontinuous porous carbon current collector was obtained. Sulfur and selenium was incorporated with the 3D BPC, achieving …
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Understanding and Controlling Failure Mechanisms of the Zinc Anode for Rechargeable Alkaline Batteries
… the percent utilization of the theoretical capacity of the Zn electroactive material is systematically varied between 1% and 16%. Cell fabrication is kept typical to the prevailing industrial cell design. Cycle life ranges from 2800 to 60, depending inversely on the Zn utilization. In all …
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Multinuclear NMR Investigations of Local Structure, Distortions and Redox Mechanisms in Layered Lithium Ion Battery Cathode Materials
… applications, improvements in specific and volumetric capacity are desirable, if they can be achieved without sacrificing safety, cost or cyclability. The redox mechanisms of many of the cathode materials with the highest capacities, particularly the “Li-excess” family, are poorly understood …
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Molecular-Level Understanding of Ionic & Electronic Charge Storage Mechanisms in Rechargeable Aluminum Batteries Using Sold-State NMR
… lithium-ion batteries due to the high volumetric capacity (8040 mAh/cm<sup>3</sup>) of aluminum. However, very few electrode materials have shown reversible aluminum ion intercalation. Intercalation Al<sup>3+</sup> ions in these structures leads to poor capacity retention, mainly due to …
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Directed lithium transport in high capacity lithium-ion battery electrodes
… intercalation to control the direction of volumetric expansion, the volume available for expansion and thus the charging capacity of these structures can be broadly varied. Chapter 3 examines the properties of microstructured Ge electrodes for Li-ion battery applications. Unlike Si …
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Molecular to Macroscopic Understanding of Chloroaluminate Anion Intercalation in Rechargeable Aluminum-Graphite Batteries
… “beyond lithium-ion” technology due to the high volumetric capacity, earth abundance, low-cost, and inherent safety of aluminum metal. However, there are very few compatible positive electrode materials that exhibit high energy density and cycling stability, in part due to the challenges of …
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Modulating the Electrochemistry of Calcium Metal Anodes
… 0.17 V more positive than Li and a theoretical volumetric capacity of 2073 mAh/cm³ (vs. 850 mAh/cm³ for graphite and 2062 mAh/cm³ for Li metal). The field of Ca metal batteries is currently in its early stages, however, due to a limited number of electrolytes that can reversibly plate and strip …