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 10 of 10 for “"Li-S batteries"”.
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Electrocatalysis In Li-S Batteries
<p>Stabilizing polysulfide-shuttle process while ensuring high sulfur loading holds the key to realize high theoretical energy density (2500 Wh/kg) of lithium-sulfur (Li-S) batteries. Though several carbon based porous materials have been used as host structures for sulfur and its intermediate …
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Metallic MoS2 Nanosheets for Lithium-Sulfur Batteries
… addresses challenges in the development of lithium-sulfur (Li-S) batteries using metallic MoS2 nanosheets as functional host materials. While our prior research established lithiated MoS2 (LixMoS2) as an effective sulfur host for Li-S batteries, two major barriers remain to practical …
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Development of New Cathodic Interlayers with Nano-Architectures for Lithium-Sulfur Batteries
… the dissolution and diffusion of polysulfides in liquid organic electrolytes hinder the advance of lithium–sulfur (Li-S) batteries for next generation energy storage. To trap and re-utilize the polysulfides, brush-like, zinc oxide (ZnO) nanowires based interlayers were prepared ex-situ using a wet …
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Sulfur-Based Yolk-Shell Nanoparticles for Lithium Sulfur Batteries
… focuses on the synthesis of gold-functionalized sulfur yolk-shell nanoparticles. Sulfur was chosen as a cathode material due to its high theoretical specific capacity (1675 mA h g−1). However, there are still many technical limitations for Li-S batteries, like the dissolution of 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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Kinetics of phase transformations in lithium-sulfur batteries
Sulfur is a promising positive electrode for lithium batteries with the potential to create the step-change improvement in energy density and cost needed for the widespread adoption of electric vehicles and renewable energy. However, lithium-sulfur batteries suffer from a number of challenges, …
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A COLLABORATIVE APPROACH TO MATERIALS DISCOVERY FOR WATER SPLITTING PHOTOCATALYSTS AND LITHIUM SULFUR REDOX.
… The production of hydrogen fuels, via water splitting, is of practical relevance for meeting global energy needs and mitigating the environmental consequences of fossil-fuel-based transportation. Water photoelectrolysis has been proposed as a viable approach for generating hydrogen, provided …
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Optical diagnostics of lithium-sulfur and lithium-ion battery electrolytes using attenuated total reflection infrared spectroscopy
Operando investigations of batteries allow direct monitoring of intrinsic chemical and physical processes governing performance. FTIR spectroscopy is a powerful technique for real time species identification and quantification. ATR FTIR allows investigations of battery electrolytes in realistic …
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Operando characterisation techniques for graphene-based lithium-sulfur batteries
Lithium-sulfur (Li-S) batteries have the potential to enable high-gravimetric capacity, low-cost energy storage, but their widespread implementation is presently limited by their rapid capacity degradation due to irreversible loss of electrical connectivity with their active material. Electrically …
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Identification of battery products and intermediates through NMR spectroscopy
… of products and intermediates formed in the lithium-oxygen, lithium-sulfur, and lithium-ion battery systems. Interest in the species formed in cycled batteries is motivated by incomplete knowledge of the discharge mechanisms and products formed, where knowledge of these species can allow the …