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-batteries"”.
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Characterization of battery anode materials by X-ray and electron-based imaging techniques
… problem of increasing carbon dioxide emissions, Li batteries have been proposed as a promising storage medium of electricity harvested from renewable clean energy sources. In addition, Li batteries are the predominant power sources in cell phones, laptops and electric vehicles. However, …
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First Principles Investigations of Solid-Solid Interfaces in Lithium Battery Materials
… of the current issues driving the development of Li batteries and some of the current research opportunities. In particular it focuses on using ab initio theoretical methods to model electrode/electrolyte interfaces for inorganic solid electrolyte materials, especially those related to …
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Design Guidelines for Sulfonyl/Sulfamoyl Fluoride Additives to Modulate Lithium Anode Coulombic Efficiency
The lithium metal anode has a high theoretical capacity (3860 mAh / g) and low electrochemical potential (‐3.04 V vs SHE), making it an ideal anode material for high energy density Li batteries. However, the high reactivity of Li metal with electrolytes results in the formation of a solid …
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First-principles modeling of thermal stability and morphology control of cathode materials in Li-ion batteries
… of 3d transition metal oxides using the generalized gradient approximation (GGA) to density functional theory and GGA+ U method. Two substantial contributions to the error in GGA oxidation energies are identified. The first contribution originates from the overbinding of GGA in the O₂ molecule …
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Development and Characterization of Advanced Polymer Electrolyte for Energy Storage and Conversion Devices
… have been widely employed in diverse applications such as fuel cell membranes, battery separators, mechanical actuators, reverse-osmosis membranes and solar cells. The polymer electrolytes used for these applications usually require a combination of properties, including anisotropic …
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Fundamental understanding and materials design approaches for lithium-oxygen electrochemical energy storage
… needed to increase the energy and power capabilities of lithium storage devices for electric vehicle and grid-scale applications. Systems based on oxygen electrochemistry are promising due to the relatively high potentials (~ 3 V vs. Li) of Li-oxygen redox couples, which can enable high energy …
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Ionic Liquids for High Performance Solid-state Lithium Metal Batteries
… has driven the growth of high-performance lithium metal batteries, but this has also raised serious safety concerns. In response, ionic liquids (ILs) have become a popular choice due to their high ionic conductivity, non-flammability, and ability to facilitate the formation of stable solid …
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Revealing ion transfer kinetics and charge dynamics at operating battery materials through scanning electrochemical microscopy
… technologies, where it governs the rate of reliable ion or electron movement to and from a battery electrode during charge/discharge. As such, issues with performance are often linked to trouble at the interface across many technologies. Developing higher-performance batteries with improved …
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Synthese von Metallnitrid- und Metalloxinitridnanopartikeln für energierelevante Anwendungen
… und Gewinnung durch bereits bekannte Materialien und durch neue Materialien. In diesem Zusammenhang ist die Chemie Wegbereiter für Nanomaterialien. Allerdings führen bisher die meisten bekannten Synthesen von Nanopartikeln zu undefinierten Partikeln. Eine einfache, kostengünstige und sichere …
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Molecular-level interphase design for sustainable batteries
Since the first commercialization of Li-ion batteries (LIBs) in 1991, they have continued to power the society for decades. However, the ever-growing demands pose challenges to their sustainability in terms of restricted energy density, inadequate cycle life, and limited key resources. In the first …