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 “"charge transfer kinetics"”.
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Revealing Interfacial Reactions and Charge Transfer Kinetics in Electrochemical Energy Storage and Conversion
… reaction mechanisms at the molecular level and charges transfer kinetics at the electrified interfaces. First, an in situ Fourier-transform infrared spectroscopy (FT-IR) method was developed to examine the parasitic reactions between carbonate electrolytes and lithium nickel, manganese and …
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Heterogeneous charge transfer dynamics of mono- and multi-layer films on glassy carbon and platinum single crystal electrodes
… carbon/polyoxometallate interface, while the charge transfer kinetics were studied in considerable detail for the platinum single crystal/hydrogen ion interface.
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Synthesis and Characterization of Polymer Composite Materials For Lithium Battery Cathodes and Capacitors
… lower initial voltage drop, higher discharge capacity and higher rate-capability than state-of-the-art SVO. PPy/SVO composite cathode materials were synthesized by polymerizing pyrrole onto the surface of pure SVO particles. Electrochemical characterization was carried out by performing …
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Thermal modeling of supercapacitors and life degradation prediction of EV batteries using deep learning
… two key challenges: understanding self-discharge mechanisms and predicting remaining useful life. The first phase develops a numerical model analyzing supercapacitor self-discharge behavior, incorporating ion redistribution, charge transfer kinetics, side reactions, and temperature effects. …
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Linear and Nonlinear Electrochemical Impedance Spectroscopy for Lithium-ion Batteries
… spectra compliments EIS characterization of charge-transfer kinetics (through the sensitivity of the second harmonic to reaction symmetry) and thermodynamic and transport processes (through a more distinct and sensitive low frequency response). Experimentally, we show that NLEIS and EIS are …
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Modeling the operating voltage of liquid metal battery cells
… which is the maximum potential upon discharge. Emf measurements were used to confirm the literature values for Mg-Sb liquid alloys and calibrate a two-phase Mg-Sb reference electrode. The charge transfer kinetics at the alloying electrode were studied using the galvanostatic pulse method …
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Electrochemical mechanisms in nano-structured graphitic and redox-active polymeric architectures
… energy storage carriers, which have shown facile charge transfer kinetics and good charge storage ability. Combining these macromolecular electrolytes with size-exclusion porous membranes provides a potential solution to current ionic conductivity restriction in non-aqueous redox flow batteries.
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OPERANDO X-RAY ABSORPTION SPECTROSCOPY STUDIES OF (PHOTO)ELECTRODE MATERIALS FOR H2 PRODUCTION/CONVERSION
… electrochemical performance, reaction mechanism, charge transfer kinetics, and overpotential of the synthesized electrodes were rigorously evaluated by cyclic voltammetry (CV), Linear sweep voltammetry (LSV), and Tafel slope. (3) Operando X-ray absorption spectroscopy (XAS), as an elemental …
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H-BN integration in III-nitride devices for green hydrogen applications
… the effect of h-BN on surface morphology and charge transfer kinetics. Second, the efficiency of a nanostructured InGaN photoanode in terms of hydrogen production is evaluated through numerical simulations. The most efficient InGaN photoelectrode identified through these studies is selected …
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The Theory and Modeling of Solar Cells Based on Semiconducting Quantum Dots
… the influences of the QD-QD (CdTe-CdSe) charge transfer rates and mechanisms on QD solar cells power conversion efficiencies using multi-level modeling methods including the first principle quantum chemistry calculations of QD electronic and charge transfer properties and the kinetic …
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Reaction Condition Dependence of Different Overpotential Components in Electrochemical Hydrogen Catalysis
… reaction (HER) can be partitioned into a charge transfer overpotential, which drives proton-coupled electron transfer, and a chemical overpotential arising from increasing surface H activity. Typical experiments provide no information about the relative contributions from these two …
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An electrochemical investigation on the mechanisms of interfacial interactions of a xanthate collector on PGM surfaces in the presence of ions
… consumption of fresh water and reduce waste discharge owing to limited freshwater supply (Ridoutt and Pfister, 2010), stringent environmental regulations (Amezaga et al., 2011) and the increase in water demand among multiple users (Rijsberman, 2006). To improve water efficiency, the use of …
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The thermodynamics, kinetics and modelling of fast-charging lithium-ion batteries featuring crystallographic shear niobium metal oxide anodes
… on global resources. We need batteries that charge faster and live longer, such that we can use less resources. Faster charge and longer life are currently limited by the negative electrode, typically graphite, because fast charging would push the potential into the regime of hazardous and …