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 13 of 13 for “"Microbatteries"”.
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Fabrication and demonstration of high energy density lithium ion microbatteries
… study of battery assembly strategies for Li-ion microbatteries will benefit not only micro-devices but also the development of more powerful and energetic large scale battery systems based on available chemistries. In chapter 2, preliminary research related to the mechanism for the improved rate …
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Self-assembly of conformal polymer electrolyte film for lithium ion microbatteries
I apply the theory of polar and apolar intermolecular interactions to predict the behavior of combinations of common battery materials, specifically the cathode substrate lithium cobalt oxide (LCO) and the polymer separator poly(ethylene oxide). These predictions were first tested qualitatively …
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Design and fabrication of high power microbatteries and high specific strength cellular solids from bicontinuous microporous hierarchical materials
… and microfabrication enable the fabrication of microbatteries with hierarchical electrodes. The three-dimensional bicontinuous interdigitated microelectrode architecture improves power performance by simultaneously reducing ion and electron transport distances through the anode, cathode, and …
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A Plastic-Based Thick-Film Li-Ion Microbattery for Autonomous Microsensors
… liquid state electrolyte were implemented in the microbatteries to achieve the high power capability and energy density. The use of single-walled carbon nanotubes (SWNTs) was found to significantly reduce the measured resistance of the cathodes that use LiAl0.14Mn1.86O4 as active materials, …
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Three-dimensional periodic structures for enhancing light-matter interaction and energy storage
… well-defined positions. Finally, interdigitated microbatteries were created from templates defined by both 3D holographic lithography and conventional UV lithography. The influence of electrode width on liquid-phase ion diffusion was studied, which provided design parameters of microbatteries for …
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Virus-enabled design of high-performing, three-dimensional nanomaterials for electrochemical energy applications
… energy applications spanning water electrolysis, microbatteries, and electrolytic urea decomposition. The virus-mediated synthesis toolkit yielded clear enhancements in electrochemical performance, as well as design insights into improving nanostructured electrodes in diverse contexts.
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Virus-enabled synthesis and 2D/3D assembly of nanowire networks
… cobalt oxide nanowires integrated into ultrathin microbatteries via soft lithography. In Chapter 4, we describe a three-dimensional porous virus-only aerogel network and demonstrate a virus-assembled metal nanowire network for use in batteries. Finally, in Chapter 5, the mechanical properties of …
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Investigations of rate limitation in nanostructured composite electrodes and experiments towards a 3D Li-ion microbattery
… the observed rate performance of half-cell 3D microbatteries, based on a manganese dioxide cathode and a lithium foil anode, was limited by the lithium ion transport distance through the porous 3D structure. The electrodeposition of conformal polymers layers onto 3D substrates was investigated. …
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Electron microscopy study of degradation mechanisms in Ni-rich transition metal oxide cathodes for Li-ion batteries
… is developed. Using aerosol-jet printing, microbatteries consisting of commercially available battery active material powders are fabricated. This way, high resolution, placement precision and the ability to deposit arbitrary shapes as well as combine materials in a facile way is achieved. …
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Stress evolution of lithium alloying electrodes during cycling
… ideal candidate materials for use as anodes in microbatteries since both are well established in microelectronics and reversibly store large amounts of lithium. However, implementation of either material has been limited by poor cyclability due to the large volumetric changes occurring during …
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Synthesis and electrochemical characterization of carbon nanotube forests on metal foils for battery electrodes
… electrode in a LiB towards the development of 3D microbatteries with high energy density per areal footprint. Microcontact printing is also explored as a scalable method to pattern CNT catalyst. In this thesis, the CNT-based electrode is fabricated by growing vertically aligned CNTs on a copper …
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Nanomaterial design and fabrication for energy storage
… sensor measurement and wireless communication. Microbatteries, such as solid-state Li-ion batteries have a larger potential energy density due to the removal of inactive binder and conductive additive materials in the electrodes. They also offer the potential for Li metal anodes and a cycle life …
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Macroporous metal oxide battery electrode performance analysis and operando spectroscopy
… mobile phones, right down to fingernail-sized microbatteries for medical devices and hearing aids. Despite decades of research, the demand for increased functionality has grown at such a rate that the development of appropriate technology has proven difficult. Additionally, the materials …