Department of Chemistry
will present a seminar entitled:
"Materials for Sustainable Energy in the 21st Century "
Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4
Solid electrolytes are ionic conductors and electronic insulators while electrodes exhibit both ionic and electronic conduction. Several inorganic crystalline, organic polymers, amorphous, and gels are found to exhibit fast ionic (e.g., O2-, H+, Li+) conduction. The science and technology of solid electrolyte and electrode is known as solid-state ionics devices (SSID) that include fuel cells, gas sensors, batteries and electrochromic displays. The general requirements for practical solid electrolytes are a high ionic and negligible electronic conductivity over the employed range of activity of the mobile species, chemical stability with the adjacent components during the operation and the preparation of the devices. Development of materials for high power applications such as solid oxide fuel cells (SOFCs) and Li ion batteries is continuing to be a major challenge for solid-state materials chemists and electrochemists. The limitations arise due to the lack of electrolytes and electrodes with the desired functional properties as well as their lack of chemical stability during long term operation. Furthermore, the current development in the field of SOFCs and batteries depends primarily on the availability of new or appropriately modified existing solid state materials. Thangadurai research group has been focused on the fundamental understanding of the functional property-composition-crystal structure relationship in numerous inorganic perovskite and perovskite-related structure materials, and to develop fast oxide ion, proton and Li ion conductors. In this talk, current trends in the advancement of solid electrolytes and electrodes for application in fuel cells and batteries will be discussed.
Friday, Jan 08, 2010 at 3:00 p.m. ST 143 Department Contact: Dr Viola Birss