CHOWDARI B V R – författare

Solid state ionics is concerned with the science and technology of ions in motion in the solid state. Ions in motion may also involve electrons, depending on the materials and surroundings. These days, solid state ionics is finding an increasing variety of applications. The knowledge of solid state ionics is also extensively mobilized to protect, predict or elongate the lifetime of structural materials in harsh service conditions and to improve the performance reliability of devices. Furthermore, solid state ionics is now being combined with the emerging nanotechnology to produce new knowledge and applications. This book covers the following topics: fuel cells and membranes; batteries; sensors and electrochromics; fundamentals of ionic transport and defect chemistry; cation/anion/mixed ionic electronic conductors.

Solid state ionics is a multidisciplinary scientific and industrial field dealing with ionic transport phenomena in solids. In a couple of decades, solid state ionics has become one of the largest disciplines closely related to energy technologies, such as batteries, fuel cells, and so on.So far, a large number of scientists and engineers in Asia as well as in Europe and US are engaged in the research in solid state ionics. In the context of such a situation, the Asian Society for Solid State Ionics was founded in 1986, and a series of academic conferences has been held biennially since 1988. In 2012, the 13th conference is organized in Sendai, Japan.This book provides research papers describing the latest developments and findings in the field of solid state ionics. The selected contributions from prominent researchers in the Asian Society for Solid State Ionics, which are presented at the 13th Asian Conference on Solid State Ionics, can be found. The papers in this book are detailed and suitable to understand recent research trends in solid state ionics, and thus will be a valuable resource for physicists, chemists, and material scientists.br>

The Asian Physics Olympiad (APhO) is a unique, single-subject, practical and theory-based individual competition in the field of physics. It was developed to provide young Asian students with a platform to display their physics knowledge. It is the celebration of the best in pre-university physics.Each year, for about one week, pre-university students from across Asia gather and test their theory and practical skills in physics. This book contains question papers in both theory and experiment and their solutions together with description of various activities of the 15th Asian Physics Olympiad held in Singapore from 11th to 18th May 2014. The book will serve as a valuable source of interesting and challenging experimental and theoretical topics for young physicists worldwide.

Solid state ionics, being a multidisciplinary area, is expected to grow at a faster rate in the new millennium, prompting the discovery of new materials and devices, as well as helping to optimize the known devices, especially the portable power sources and display systems. The Asian Society for Solid State Ionics (ASSSI) plays a significant role in bringing together researchers from the Asian countries, every two years, to exchange notes and ideas, to foster friendship and collaboration, and to discuss the prospects.The topics covered in this volume are: ion dynamics, theoretical modeling, ion-conducting polymers, gels and ceramics, glasses, crystalline materials including nano-phases, composites, electrode/electrolyte interfaces and novel experimental techniques. Papers on crystalline materials deal with ion conduction in Li, Na, Ag, Tl, F and O-containing compounds. Materials and device aspects have received wide coverage, especially the areas of lithium ion batteries (LIBs) and solid oxide fuel cells (SOFCs).Rechargeable high energy density LIBs, especially those employing immobilized gel or polymer electrolyte, are the favorite portable power sources in the new millennium. As expected, a large number of papers on both cathodes and polymer electrolytes for LIBs were presented at the conference. The papers on fuel cells almost exclusively deal with SOFCs, indicating the great importance being given to this area in Japan and China. A breakthrough in materials and technology of SOFC is expected in the coming decade. This volume will be useful not only to the active researchers in the field but also to youngsters entering the exciting area of solid state ionics.

This volume presents a comprehensive collection of state-of-the-art advances in the field of solid state ionic materials and the design, fabrication and performance of devices that use them, such as lithium batteries, gas sensors, fuel cells, supercapacitors and electrochromic displays. These electrochemical devices are becoming pervasive in our technologically driven lifestyles.The book includes research activities being carried out in the new millennium, through special keynote addresses, as well as invited and contributed papers, related to experimental and theoretical modeling in solid state ionics. The excellent coverage of topics arranged in such a fashion helps students and beginners to understand the field with enthusiasm. It also encompasses various experimental techniques often employed in solid state ionics research, such as XRD, XPS, hole-burning spectroscopy, EDAX, EXAFS, SEM, thermal analysis techniques, ac-impedance spectroscopy and other electrochemical techniques such as cyclic voltammetry, galvanostatic and potentiostatic electrochemical techniques. Theoretical and applied aspects of mixed conduction for applications mainly in solid oxide fuel cells occupy a portion of the text. Finally, this volume demonstrates the amount of research activities being carried out in this application-oriented field.Solid State Ionics will be of interest to all in the solid state ionics community, including chemists, physicists, materials scientists and electrochemists, both in industry and in research.

The field of solid state ionics deals with ionically conducting materials in the solid state and numerous devices based on such materials. Solid state ionic materials cover a wide spectrum, ranging from inorganic crystalline and polycrystalline solids, ceramics, glasses, polymers, composites and nano-scale materials. A large number of Scientists in Asia are engaged in research in solid state ionic materials and devices and since 1988. The Asian Society for solid state ionics has played a key role in organizing a series of bi-ennial conferences on solid state ionics in different Asian countries. The contributions in this volume were presented at the 10th conference in the series organized by the Postgraduate Institute of Science (PGIS) and the Faculty of Science, University of Peradeniya, Sri Lanka, which coincided with the 10th Anniversary of the Postgraduate Institute of Science (PGIS). The topics cover solid state ionic materials as well as such devices as solid state batteries, fuel cells, sensors, and electrochromic devices. The aspects covered include theoretical studies and modeling, experimental techniques, materials synthesis and characterization, device fabrication and characterization.