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 6 of 6 for “"Ionic and electronic conductivity"”.
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Proton dynamics in ultrathin GdO𝑥H𝑦 films for magneto-ionics
… to neuromorphic computing, to solid state pixels and optical circuit components. Metal oxides can conduct ionic current, allowing their properties and those of adjacent materials to be controlled through voltage control of ion transport and electrochemical reactions. This thesis focuses on …
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Catalyst Layer Design in Polymer Membrane Fuel Cells
… specifically the components responsible for ionic and electronic conductivity. The first objective of this work was to determine the optimal ionomer-to-catalyst ratio and additional carbon content within the catalyst layer. Another problem that arises when replacing platinum with non-PGM …
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$^{17}$O Solid-State NMR Spectroscopy of Functional Oxides for Energy Conversion
… techniques to study the local structure and ion dynamics of functional oxide materials for applications in energy conversion, in particular as electrodes and electrolytes in solid oxide fuel cells (SOFCs). Broadly, the work comprises two related areas: (1) application of a combined …
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Oxygen Transport Membrane Reactors for Oxy-Fuel Combustion and Carbon Capture Purposes
… is done by evaluating the material properties and oxygen permeability of different OTM compositions subjected to a variety of operating conditions. The scope of this work consists of three components: (1) evaluate the oxygen permeation capabilities of perovskite-type materials for the …
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Numerical simulations of ion transport membrane oxy-fuel reactors for CO₂ capture applications
… the key features of oxygen permeation and hydrocarbon conversion in ion transport membrane (ITM) reactors. ITM reactors have been suggested as a novel technology to enable air separation and fuel conversion to take place simultaneously in a single unit. Possessing the mixed ionic and …
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New ways to tune the multi-functionality of oxide thin films for memory applications
… presents studies on engineering the electrical and magnetic properties in oxide thin films using vertically-aligned nanocomposites (VAN). The works aim to enhance their multi-functionality for various memory applications. First, electroforming-free resistive switching (RS) with high ON/OFF ratio …