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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 44 for “"lithium batteries"”.
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Printable lithium batteries
Printable lithium iron phosphate (LiFePO4) cathodes and porous aerogel / polymer separators have been designed, constructed, and tested. The cathodes consist of LiFePO4, PVDF binder, and conductive carbon which was developed for robocast deposition (printing) onto carbon coated aluminum substrates …
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Improvements on physics-informed models for lithium batteries
… areas undergoing this development include lithium-ion energy storage. This is inclusive of electrochemical design improvements and advanced battery management control architectures. Field objectives for these developments include but are not limited to, reductions in cell degradation, …
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Ab-initio study of cathode materials for lithium batteries
… stability of positive electrode materials for lithium rechargeable batteries is investigated. The investigation focuses upon lithiated α-NaFeO₂ type 3d transition metal oxide structures. It is found that the ligand field stabilization energy (LFSE) is of particular importance in stabilizing the …
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Studies of Sulfur-based Cathode Materials for Rechargeable Lithium Batteries
… is critical for the next generation rechargeable batteries to meet the ever-increasing desires of global energy storage market. This thesis is focused on two sulfur-based cathode materials ranging from inorganic lithium sulfide to organotrisulfide. For lithium sulfide cathode, we developed a …
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Toward commercializable microphase-separating copolymer electrolytes for rechargeable lithium batteries
… [POEM-b-PBMA], which when doped with LiCF₃SO₃ (lithium triflate) exhibited good conductivity at room temperature ([sigma] [approximately] 3 x 10⁻⁶ S/cm at 23CÌ). The other approach used free radical techniques to prepare the graft copolymer, POEM-g-PDMS, starting with commercially available …
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Engineering Advanced Electrolyte and Metal Organic Framework Catalyst for Lithium Batteries
… specific energy of more than 3,500 Wh.kg-1, lithium-oxygen batteries are regarded as an excellent choice for next-generation energy storage, competing with gasoline. However, the inherent instability of liquid electrolytes, the flammability risks associated with volatile solvents, and the …
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Electrochemical kinetics of thin film vanadium pentoxide cathodes for lithium batteries
… of thin film vanadium pentoxide cathodes used in lithium batteries. Variations in microstructures were achieved via sputtering and anneal treatments, resulting in films with different morphologies, grain size distributions, and orientations. Key findings included (1) grain size distributions …
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Stability of lithium aluminum manganese oxide cathodes for rechargeable lithium batteries
Lithium manganese oxides have attracted wide attention as low-cost, nontoxic intercalation cathode materials for rechargeable lithium batteries. In this work, the stability of these compounds during synthesis and in use has been studied in several respects. (1) Phase stability of LiMnO2 polymorphs …
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Design, Development and Structure of Liquid and Solid Electrolytes for Lithium Batteries
… necessitates the enhancement of commercial lithium-ion batteries (LIB), especially regarding their safety and energy density. Historically, aqueous electrolytes were the norm in the battery industry. Prior to the development of lithium batteries, most commercially significant batteries used …
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MULTI-IONIC LITHIUM SALTS FOR USE IN SOLID POLYMER ELECTROLYTES FOR LITHIUM BATTERIES
Commercial lithium ion batteries use liquid electrolytes because of their high ionic conductivity (>10-3 S/cm) over a broad range of temperatures, high dielectric constant, and good electrochemical stability with the electrodes (mainly the cathode cathode). The disadvantages of their use in lithium …
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Ab Initio Prediction of Metal Phosphide Anode Materials for Lithium and Beyond Lithium Batteries
… 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 alternative which has a high capacity of 2596 mAh/g and can alloy with both Li$^+$ and Na$^+$ ions, but suffers from …
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Studies on Chemical and Electrochemical Stability of Li-stuffed Garnets for Next Generation Lithium Batteries
State-of-the-art lithium-ion batteries are responsible for the portable electronics revolution, enabling the use of cell phones, laptops, and other gadgets. However, even when fully developed, the energy density and safety are insufficient to meet the demands in electric vehicles and grid storage. …
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Understanding the Chemistries of Ni-rich Layered Oxide Materials for Applications in Lithium Batteries and Catalysis
… electronic devices and electric vehicles. Lithium batteries are at the frontier of energy storage. Due to geopolitical concerns, there is a growing need to understand the chemistries of Co-free, Ni-rich layered oxide materials which are cost-efficient and possess increased practical …
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Cation-disordered oxides for rechargeable lithium battery cathodes
… density cathode materials for rechargeable lithium batteries are ever increasing. This is because such cathode materials will enable smaller and lighter rechargeable lithium batteries for complex applications such as in electric vehicles or in grid energy storage. Nearly all high-energy …
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Synthesis and characterization of lithium-manganese-oxide electrodes for lithium battery applications
… more towards portable equipment the demand for batteries, especially rechargeable batteries, is increasing. Lithium batteries have several advantages over other competitive systems. Coupled with the inexpensive and environmentally friendly manganese dioxide, Li/MnO₂ batteries are being used …
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Analytical and numerical studies on mismatch strain related problems
… of nanotube and nanorod silicon anodes in lithium batteries and modified failure criterion for earthquake distribution along the earth depth. The first chapter discusses analytical and experimental results of self-assembling of thin films made from Polydimethysiloxane (PDMS)/SU-8 mixture. …
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Small Wind Turbine Blade Sensor for Condition Based Maintenance
… the system can run for 30+ years with lithium batteries if the accelerometer on the microcontroller board is replaced. The system has been tested on a vibration shaker, and it is also tested in single disturbance with wood and aluminum beam.</p>
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Doped LiFePO₄ cathodes for high power density lithium ion batteries
… as a promising storage compound for cathodes in lithium ion batteries. It has an energy density similar to that of LiCoO 2, the current industry standard for cathode materials in lithium ion batteries, but with a lower raw materials cost and an increased level of safety. An inherent limitation of …
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Lithium intercalation reactions with transition metal oxides
An investigation of several lithium transition metal oxide systems has been undertaken with the aim of synthesising an optimised LiM0₂ compound (M = Mn, Co or Co/Ni mixtures) for application as a cathode in rechargeab1e lithium batteries. Attention has been focused on systems which show promise for …
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