A Study of the Conductive Properties of Nanostructured Metal Oxide Films: A Novel Composite MIEC Thin Film Material for SOFCs

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Fuel cells which were first employed in spacecraft, are part of the ongoing pursuit for renewable energy sources, and environmentally compatible electric power generation. Recent enhancements in design and materials might establish fuel cells in a sustainable hydrogen energy economy (SHEE) as viable alternatives to the internal combustion engine. This study investigates the conductive properties of metal-oxide thin films by developing a new deposition technique called dual channel ultrasonic spray pyrolysis (DC-USP). The DC-USP process has proved to be a reliable and cost-effective method to fabricate thin films. We have then created a novel mixed ionic electronic conductor (MIEC) composed of two metal-oxides: lanthanum strontium ferrite and copper-doped bismuth vanadate (LSF.40:BiCuVOx.10). This composite material can contribute to solve the major outstanding problem of the three-phase boundary (TPB) that limits the oxygen reduction reaction to within a microscopic region near the cathode-electrolyte interface in the SOFC device. Results show that at a temperature of 550 C, the average bulk resistivity for LSF.40:BiCuVOx.10 films was 2.08 ohm-cm (a conductivity of 0.48 S/cm).

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Inorganic and Metallic Nanotubular Materials: Recent Technologies and Applications

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This book describes the synthesis, characterization and applications of inorganic and metallic nanotubular materials. It cover a wide variety of nanotubular materials excluding carbon nanotubes, ranging from metal oxides, sulfides and nitrides such as titanium oxide, tungsten sulfide, and boron nitride, as well as platinum and other noble-metals to unique nanotubes consisting of water, graphen or fulleren. Based on their structural and compositional characteristics, these nanotubular materials are of importance for their potential applications in electronic devices, photocatalysts, dye-sensitized solar cells, nanothermometer, electrodes for fuel cells and batteries, sensors, and reinforcing fillers for plastics, among others. Such materials are also having a great impact on future developments, including renewable energy sources as well as highly efficient energy-conversion and energy-saving technologies. This book will be of particular interest to graduate students in chemistry and physics as well as experts in the fields of nanotechnology, material science and inorganic and solid-state chemistry.

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Nanotechnology in Catalysis 3

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This volume continues the tradition formed in Nanotechnology in Catalysis 1 and 2. As with those books, this one is based upon an ACS symposium. Some of the most illustrious names in heterogeneous catalysis are among the contributors.

The book covers:
- Design, synthesis, and control of catalysts at nanoscale
- Understanding of catalytic reaction at nanometer scale
- Characterization of nanomaterials as catalysts
- Nanoparticle metal or metal oxides catalysts
- Nanomaterials as catalyst supports
- New catalytic applications of nanomaterials

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Nanomaterials: Toxicity, Health and Environmental Issues

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Offering a unique overview of nanoparticle-related environmental risks depending on particle type and exposed surroundings, this volume brings together both medical and nanotechnological aspects. The book adopts an in-depth approach to toxicology from both particle size as well as particle nature, covering all important nanomaterial classes: carbon materials, polymers, metals, and metal oxides. Clearly structured, the text is careful to address the effects on human physiology, air, water and the general environment.

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