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 8 of 8 for “"Vinylene carbonate"”.
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Nanomaterial design and fabrication for energy storage
… capacity after 100 cycles. A TiO2 coating and a vinylene carbonate electrolyte additive were used to enhance cycle stability and improve electrochemical kinetics. Capacity retention was increased to 59 % after 200 cycles for V2O5 in aqueous electrolyte with 10 wt. % vinylene carbonate additive …
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Understanding the pathway and mechanism of electrolyte decomposition on metal oxide surfaces in Li-ion batteries by in situ Fourier Transform Infrared Spectroscopy
… surface during charging. While ethyl methyl carbonate (EMC) and ethylene carbonate (EC) were stable against (electro)chemical oxidation on Pt up to 4.8 VL, dehydrogenation of both carbonates on the surface of LiNio.8Cooa.Mno.l02 (NMC81 1) electrodes was revealed by in situ FTIR spectra and …
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Understanding the Solid Electrolyte Interphase Formed on Si Anodes in Lithium Ion Batteries
… high-capacity Si anodes in conventional carbonate electrolytes with and without fluoroethylene carbonate (FEC) additives. A model system of silicon nanowire (SiNW) electrode is used to avoid interference from the polymeric binder. To facilitate characterization via one- and …
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Understanding and Preventing the Degradation of Silicon as a Lithium Ion Battery Anode
… of the electrolyte additives fluoroethylene carbonate (FEC) and vinylene carbonate (VC) on the thin-film electrode is investigated, suggesting the formation of a mechanically robust SEI. Electrochemical experiments and electron microscopy give an insight into both structural and chemical …
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Understanding the solid electrolyte interface (SEI) on alloying anodes: development of a methodology for SEI sample preparation and x-ray photoelectron spectroscopy characterization and studies of the SEI on electrodeposited thin film intermetallic anodes for Li-ion batteries
… anodes. The third chapter examines the role that vinylene carbonate, a conventional SEI-improving electrolyte additive, plays in passivating the surface and extending the cycle lifetime of Cu2Sb electrodes. The fourth chapter is concerned with understanding what role the SEI plays in the cycle …
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Unique templating of and applications enabled through mesoporous colloids
… through 85 cycles after the addition of vinylene carbonate to the electrolyte, effectively stabilizing the solid-electrolyte interface. The Fe3O4-carbon anode showed excellent coulombic efficiency with a dramatic decrease in the charge hysteresis, from 0.90 V in conventional systems to …
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Investigation of Alkali Metal-Host Interactions and Electrode-Electrolyte Interfacial Chemistries for Lean Lithium and Sodium Metal Batteries
… cycle life with 3 mAh cm-2 areal capacity and 2% vinylene carbonate (VC) electrolyte additive gave the best cycle life before reaching a state of "rapid cell failure". Increasing the electrodeposition rate reduced cycling stability and had a faster fade in capacity. The electrodeposition of …
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Microcapsule-based strategies for enhanced performance of lithium-ion batteries
… time-release of encapsulated battery additive, vinylene carbonate (VC) and (2) mechanical triggering of microcapsules embedded in battery electrodes. Time-release of encapsulated battery additives aims to promote a beneficial SEI layer at the interface between electrode and electrolyte by …