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Charakterisierung und Modellentwicklung von Natur und Funktionalität der Kathoden/Elektrolyt-Grenzfläche von Hochtemperatur-Brennstoffzellen (SOFC)

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Book Series: Schriften des Instituts für Angewandte Materialien - Werkstoffe der Elektrotechnik, Karlsruher Institut für Technologie / Institut für Angewandte Materialien - Werkstoffe der Elektrotechnik ISSN: 23658029 ISBN: 9783731508618 Year: Volume: 35 Pages: II, 246 p. DOI: 10.5445/KSP/1000087336 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:01
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Solid oxide fuel cells (SOFC) achieve high efficiencies, the lower the internal electrochemical losses are. This work investigates insulating secondary phases at the cathode/electrolyte interface that are formed during fabrication. Full cells and model systems are electrochemically characterized, analyzed by electron microscopy and reconstructed by tomography. A FEM model reveals performance limiting factors. As a result, an optimized production routine is proposed.

Advanced Synchrotron Radiation Techniques for Nanostructured Materials

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ISBN: 9783039216802 9783039216819 Year: Pages: 138 DOI: 10.3390/books978-3-03921-681-9 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Mathematics --- Science (General)
Added to DOAB on : 2019-12-09 11:49:16
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Nanostructured materials exploit physical phenomena and mechanisms that cannot be derived by simply scaling down the associated bulk structures and phenomena; furthermore, new quantum effects come into play in nanosystems. The exploitation of these emerging nanoscale interactions prompts the innovative design of nanomaterials. Understanding the behavior of materials on all length scales—from the nanostructure up to the macroscopic response—is a critical challenge for materials science. Modern analytical technologies based on synchrotron radiation (SR) allow for the non-destructive investigation of the chemical, electronic, and magnetic structure of materials in any environment. SR facilities have developed revolutionary new ideas and experimental setups for characterizing nanomaterials, involving spectroscopy, diffraction, scatterings, microscopy, tomography, and all kinds of highly sophisticated combinations of such investigation techniques. This book is a collection of contributions addressing several aspects of synchrotron radiation as applied to the investigation of chemical, electronic, and magnetic structure of nanostructured materials. The results reported here provide not only an interesting and multidisciplinary overview of the chemicophysical investigations of nanostructured materials carried out by state-of-the-art SR-induced techniques, but also an exciting glance into the future perspectives of nanomaterial characterization methods.

Sol-Gel Chemistry Applied to Materials Science

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ISBN: 9783039213535 9783039213542 Year: Pages: 216 DOI: 10.3390/books978-3-03921-354-2 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Chemistry (General)
Added to DOAB on : 2019-12-09 11:49:15
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Sol–gel technology is a contemporary advancement in science that requires taking a multidisciplinary approach with regard to its various applications. This book highlights some applications of the sol–gel technology, including protective coatings, catalysts, piezoelectric devices, wave guides, lenses, high-strength ceramics, superconductors, synthesis of nanoparticles, and insulating materials. In particular, for biotechnological applications, biomolecules or the incorporation of bioactive substances into the sol–gel matrix has been extensively studied and has been a challenge for many researchers. Some sol–gel materials are widely applied in light-emitting diodes, solar cells, sensing, catalysis, integration in photovoltaic devices, and more recently in biosensing, bioimaging, or medical diagnosis; others can be considered excellent drug delivery systems. The goal of an ideal drug delivery system is the prompt delivery of a therapeutic amount of the drug to the proper site in the body, where the desired drug concentration can be maintained. The interactions between drugs and the sol–gel system can affect the release rate. In conclusion, the sol–gel synthesis method offers mixing at the molecular level and is able to improve the chemical homogeneity of the resulting composite. This opens new doors not only regarding

Keywords

sol-gel method --- Fourier transform infrared spectroscopy (FTIR) analysis --- bioactivity --- biocompatibility --- sol–gel method --- organic-inorganic hybrids --- chlorogenic acid --- cytotoxicity --- biocompatibility --- silsesquioxanes --- thiol-ene click reaction --- in situ water production --- hydrophobic coatings --- cotton fabric --- paper --- NMR --- wettability --- sol-gel --- hollow sphere --- 1D structure --- sol-gel --- thin-disk laser --- Yb-doped glasses --- aluminosilicate glasses --- photoluminescence --- ultrasonic spray deposition --- tungsten oxide --- lithium lanthanum titanium oxide --- conformal coating --- Li-ion batteries --- sol-gel technique --- biomaterials --- cell proliferation --- cell cycle --- one transistor and one resistor (1T1R) --- organic thin-film transistor (OTFT) --- resistive random access memory (RRAM) --- sol-gel --- lithium-ion battery --- LiMnxFe(1?x)PO4 --- carbon coating --- pseudo-diffusion coefficient --- potential step voltammetry --- electrochemical impedance spectroscopy --- sol-gel --- oxyfluoride glass-ceramics --- nanocrystal --- optical properties --- sol-gel method --- SiO2–based hybrids --- poly(?-caprolactone) --- TG-DSC --- TG-FTIR --- X-ray diffraction analysis --- computer-aided design (CAD) --- mechanical analysis --- finite element analysis (FEA) --- composites --- organic–inorganic hybrid materials --- biomedical applications --- metal oxides --- multi-layer --- surface plasmon resonance --- optical sensors --- computer-aided design (CAD) --- mechanical analysis --- finite element analysis (FEA) --- composites --- hybrid materials --- biomedical applications

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