Search for dissertations about: "proton conduction"
Showing result 1 - 5 of 27 swedish dissertations containing the words proton conduction.
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1. Vibrational proton dynamics in hydrated perovskites and alkali thio-hydroxogermanates
Abstract : .... READ MORE
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2. Point defects and ion conduction in solid oxides: a first-principles case study of La2Zr2O7
Abstract : In the endeavor to attain a clean environment and sustainable energy consumption, the notion of a future hydrogen economy stands out as one of the grandest visions. Striving for this vision, a critical task lies in optimizing the performance of the fuel-cell devices responsible for extracting electric power from the energy stored in hydrogen molecules. READ MORE
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3. Thin-Film Electrocatalysts for Polymer Electrolyte Fuel Cells - Activity, Durability and Proton Conduction
Abstract : The polymer electrolyte membrane fuel cell (PEMFC) is a potential technology for future energy conversion in sustainable energy systems. By using hydrogen from renewable energy sources and oxygen from the air, the fuel cell produces electricity with water as the only exhaust. READ MORE
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4. Proton Conducting Ceramics; Synthesis, Characterization and Sample Cell Environments
Abstract : Acceptor doped Perovskite ceramics have been shown to exhibit high levels of protonic conduction in humid atmospheres. However significant grain boundary resistance and long sintering times required to achieve sufficient grain size growth has hindered their widespread application as electrolyzers, fuel cells and gas separation membranes. READ MORE
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5. Significance of grain boundaries for transport phenomena in graphene and proton-conducting barium zirconate
Abstract : Grain boundaries can have a significant influence on the properties of polycrystalline materials. When determining the type and extent of this influence it is frequently useful to employ computational methods such as density functional theory and molecular dynamics, which can provide models of the grain boundary structure at the atomistic level. READ MORE