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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 20 of 37 for “"Aqueous Electrolyte"”.
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Electrochemical and structural properties of superionic conductors in aqueous electrolyte
… potential solution is the low-cost air-breathing aqueous sulfur redox flow battery proposed by the Chiang group. Currently, the battery power output is significantly limited by high resistance from the membrane, a superionic conductor. This thesis investigates the electrochemical and structural …
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NMR Studies of Aqueous-Electrolyte Ion Sorption in Energy Storage Materials
… and electrocatalytic applications involving aqueous electrolytes. However, the impact of charged species including hydronium (H<sub>3</sub>O<sup>+</sup>) and hydroxide (OH<sup>-</sup>) on the ion adsorption and surface charge distribution are poorly understood, hindering the design and …
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Study of concentrated aqueous electrolyte solutions by a static vapor pressure method.
Massachusetts Institute of Technology. Dept. of Chemistry. Thesis. 1967. Ph.D.
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An Improved Model for Calculating Heats of Dilution and Equilibrium Constants for High Temperature Aqueous Electrolyte Solutions
At high temperatures, the properties of aqueous electrolyte systems differ markedly from those at 25°C. For mixed-electrolyte dilute solutions at high temperatures, the degree of ion-association is sufficiently large that the association equilibrium must be incorporated in any model describing the …
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BARDS analysis of real-time H2 and O2 gas evolution during the total water splitting of an aqueous electrolyte
… acoustic profiles were assessed in terms of electrolyte used, the concentration of the electrolyte, and the potential applied to the electrolyte. The technique could be utilised in the future evaluation of newly made electrode materials that evolve hydrogen gas and correlate material …
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Mass transfer in bubble column contractors
… contactors have been investigated for water and aqueous electrolyte solutions. Two methods were used to obtain experimental data on volumetric mass transfer coefficients: the steady state oxidation technique and a transient method. The former technique was found to be unsuitable for absorption …
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Processing and properties of titania nanostructures
… of 15-30 nm are obtained using an organic electrolyte and crystalline TNTs with a wall thickness of 7-12 nm are prepared by an aqueous electrolyte. When annealed at higher temperatures the TNTs diffuse to nanorods with a modified crystal structure and chemical composition. The wall …
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Optische Dreiwellenspektroskopie an GaAs(001), Si(111) und Pt-Elektrolyt-Grenzflächen
… used to investigate GaAs(001), Si(111) and Pt-electrolyte interfaces. GaAs(001): The spectral dispersion of the magnitude of the second-order nonlinear susceptibility |æxyz| of GaAs has been determined by second-harmonic generation (SHG) for two-photon energies between 2 eV and 5 eV. In this …
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Nanomaterial design and fabrication for energy storage
… with a low ionic conductivity solid-state electrolyte results in poor power capabilities and a significant potential drop can occur during high current operation. A small form factor capable of high current operation is critical in the development of the next-generation hybrid systems. …
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Surfactant Adsorption during Collisions of Colloidal Particles: A Study with Atomic Force Microscopy (AFM)
… and zwitterionic surfactants is studied in aqueous electrolyte solutions. A Maxwell relation is applied to Atomic Force Microscopy (AFM) data to obtain changes in surfactant adsorption as a function of the separation between two glass surfaces. In addition, self-consistent field theory (SCF) …
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Electrolyte Dependence on the Electrochemical and Optoelectronic Activity of a Conjugated Polymer in Organic Solvents
… As such, these materials are characterized in nonaqueous electrolyte systems to evaluate fundamental electrochemical properties such as onsets of oxidation, current densities, and doping kinetics. Supporting electrolytes and solvents are critical parameters in electrochemical characterization and …
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Molecular Optimization for Classical and Quantum Condensed Phase Systems
… our attention to atomistic interfaces including aqueous electrolyte-electrode and polymer-protein composite. We discuss proficient schemes to implement and process our molecular simulations, allowing us to elucidate (a)typical structural-dynamical fluctuations to heterogeneities native to these …
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Electrochemical Alkene Epoxidation Using Water as the Oxygen Source
… which converts to ethylene oxide in alkaline aqueous electrolyte. Through detailed electrochemical kinetic studies, we reveal that the chlorine-mediated ethylene oxidation mechanism changes significantly in the presence and absence of ethylene, indicating that it is not a simple merging of the …
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The Biomedical Application of Conducting Polymers for the Electrochemical Detection of Diseases
… and after aptamer attachment, in polar and aqueous electrolyte solutions, was studied. The attachment of the aptamers to the conducting polymer was confirmed with fluorescence microscopy and cyclic voltammetry. The fabricated aptamer-based sensors were then used for the electrochemical …
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Water-Soluble Redox Materials and Their Applications in Aqueous Batteries
… due to the safety (using the non-combustible aqueous electrolytes) and cost-effectiveness (low-cost separators and aqueous electrolyte salts), aqueous batteries are focused in terms of electrocatalyst design for optimising the aqueous redox reaction, development of novel aqueous battery …
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Charge Storage Mechanism of Redox Polymers for Energy Storage
… polymer P(NDI2OD-T2) was investigated in non-aqueous electrolyte solutions. The solvated ion clusters served as charge carriers for polymer redox reactions, whose structure varied with solvents. The rate performance of the polymer electrodes was determined by their degree of initial swelling …
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Using molecule-surface interactions for improved photoelectrochemical device performance and modeling
… semiconductor photoelectrode in contact with an aqueous electrolyte. Surface functionalization has been shown to be an attractive strategy for tuning the photoelectrode’s surface properties, enabling high-efficiency PEC devices. Experimental investigations of functionalized photoelectrode …
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Design of electrode for electrochemical energy storage and conversion devices using multiwall carbon nanotubes
… characteristics of LbL assembly of weak polyelectrolytes, controlling thickness and morphology with assembly pH conditions. We demonstrate that these MWNT thin films have randomly oriented interpenetrating network structure with well developed nanopores using SEM, which is an ideal structure …
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Eigenschaften von Silber-Nanodrähten
… was applied to produce silver-nanowires in an aqueous electrolyte. The thickness of produced wires proved to be constant over the whole length. The thickness distribution in the ensemble varied around a maximum at about 27 nm, the lengths extended in the experiments up to more than 100 µm. …
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SYNTHESIS AND CHARACTERIZATION OF ZINC OXIDE BASED NANOSTRUCTURES AND COMPOSITES FOR ENERGY RELATED APPLICATIONS
… and galvanostatic charge-discharge using various electrolytes. The ionic electrolyte device showed a maximum specific capacitance of 120 F/g along with a maximum energy density of 5.17 Wh/Kg and a high power density of 8.4 kW/h. Additionally, we found that a high specific capacitance value of 358 …
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