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 20 of 180 for “"Electrode materials"”.
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Electrode materials for the electrolysis of metal oxides
… and iridium were examined as candidate anode materials for an electrolytic cell. The materials were pre-selected to endure high process temperatures and were characterized for inertness and high current density during electrolysis using voltammometric techniques. Inertness is viewable through …
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Novel electrode materials and advanced electrochemical diagnostics for electrochromic devices
Electrochromic materials (ECMs) are a class of “smart” materials used in a variety of applications due to the ability to alter their optical properties with the application of a potential. For these applications, ECMs are fashioned into electrochromic devices (ECDs). However, commercialization of …
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Investigation of non-intercalation electrode materials for next-generation batteries
… increase dramatically. Conversion and alloying electrodes for secondary rechargeable batteries have been studied intensively as alternatives to intercalation materials as they can provide 2 to 5 times larger gravimetric capacities. However, there are many challenges facing the practical …
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Phase transformations in layered electrode materials for sodium ion batteries
… investigate sodium ion intercalation in layered electrode materials for sodium ion batteries. Layered metal oxides have been at the forefront of rechargeable lithium ion battery technology for decades, and are currently the state of the art materials for sodium ion battery cathodes in line for …
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High Performance Electrode Materials From Carbon Nanofibers with Tunable Pore Architectures
… on the pure electrostatic forces formed at the electrode/electrolyte interface. High surface area carbon and electrolytes with higher working voltage window are the key components to improve the energy density of EDLCs. Novel polyimide (PI) precursors were synthesized and tested for …
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Supercapacitor electrode materials based on nanostructured conducting polymers and metal oxides
… properties and the surface areas of their electrode materials. Therefore, current research in the field of supercapacitors has been carried out with increased emphasis on the development of new electrode materials. Optimal novel synthesis of electrode materials for supercapacitor …
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COMPUTATIONAL STUDIES OF ORGANIC ELECTRODE MATERIALS FOR LI AND NA ION BATTERIES
Organic materials are promising to be used as electrodes for Li/Na ion batteries, which can be sustainable and scalable. Moreover, many organic electrode materials provide similar performance in Li and Na ion batteries, which is not the case for most inorganic materials. As one of post-Li ion …
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The production and characterization of ceramic carbon electrode materials for CuCl-HCl electrolysis.
… process we have produced ceramic carbon electrode (CCE) materials through a sol-gel method incorporating a selection of amine containing silanes with increasing numbers of primary and secondary amines. When protonated these amines allow for improved transport of anionic copper complexes. …
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Novel Syntheses and Surface Modifications of Electrode Materials for Superior Lithium-Ion Batteries
… relies on electrochemical characteristics of electrode materials, i.e., anode and cathode materials. This dissertation work aims at developing novel electrode materials with high capacity, excellent cycling stability and remarkable rate capability for next-generation lithium-ion batteries. The …
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Structure, morphology and reaction mechanisms of novel electrode materials for lithium-ion batteries
For the Li1+xV1-xO2 materials, the amount of excess Li does not change the average crystal structure; however, it alters the cycling performance greatly. This suggests that the local structure governs the electrochemical behaviour. This motivated us to employ the pair distribution function (PDF) …
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Design and synthesis of novel nanometallic catalysts and electrode materials for green fuel cells
… of this work is to develop novel catalysts and electrodes for improving the efficiency of different designs of fuel cells.</p> <p>Towards achieving this goal, the project was divided into three phases. For the first phase, a new electrode material was prepared for Ethanol Oxidation Reaction …
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Synthesis and properties of some electrolyte additives and electrode materials for lithium-ion batteries
… by safety, cycle life, and the availability of materials. This study was aimed at contributing to the development of lithium-ion power sources by synthesizing bifunctional organic electrolyte additives and electrode materials. The bifunctional organic electrolyte additives …
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OPERANDO X-RAY ABSORPTION SPECTROSCOPY STUDIES OF (PHOTO)ELECTRODE MATERIALS FOR H2 PRODUCTION/CONVERSION
… process to rationally design high-efficiency electrodes. Therefore, this thesis is focused on this topic. In this thesis, the works mainly contain 3 parts: (1) Transition metals (Fe, Cu, Mn) are used to dilute or alternate expensive electrode materials for oxygen reduction reaction (ORR), …
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Designing new electrode materials for energy devices by integrating ab initio computations with experiments
… gauge useful properties such as high capacity in electrode materials. The feasibility of a Ni2+/Ni4+ active redox couple is confirmed in a new layered electrode material, Lio.gNi045Ti5502. First principles calculations combined with experiments show that the degree of cation disordering in the …
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Thermal conductivity switching of polymers and lithium-ion battery electrode materials in response to external stimuli
… thermoelectrics, energy science and biomaterials seek for materials with either high or low thermal conductivity as they help to manage heat in the device and the system. However, traditional materials can only provide thermal functionality in one way—thermal conductor or insulator—to …
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Understanding and Exploiting Anion Redox Process for High Energy Density Positive Electrode Materials for Li-ion Batteries
… was widely assumed that Li-ion battery positive electrode materials, Li transition metal oxides, store charges through the redox activity of transition metal species, accompanied by the intercalation and deintercalation of Li-ions into and out of the host structure. Layered lithium nickel, …
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Synthesis and Characterisation of Electron Conducting Mesoporous ti and ta Oxide for Use as Potential Electrode Materials in Lithium Ion Batteries
… were achieved using 5% polymer loading and host materials with the largest pore size. Excessive polymer loading and smaller pore sizes lead to decreased performance due to inhibition of Li+ transport. The C18 templated TiO2 composite produced the best capacity retention at 58% retention, and the …
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