Prof. Yury Gogotsi, Drexel University, USA, visited 12th Asian BioCeramics (ABC2012) Symposium, November 18-21, 2012 at the International Conference Hall, Kuang-Fu Campus, National Cheng Kung University, Tainan, Taiwan
The Asian BioCeramics Symposium is held annually in Asia, gathering front-line researchers, scientists, engineers, manufactures, dentists and surgeons from countries around the world. The Symposium was first organized in 2001 to encourage young Asian researchers interested in bioceramics and related fields. During the first decade of the Asian BioCeramics Symposium history, the scope of the symposium has widely spread and impregnated. The next decade starting from the ABC2012 would encourage further evolution and revolution of the symposium.
At the plenary lecture Prof. Yury Gogotsi, Drexel University, USA, gave keynote/plenary talk Manufacturing Carbon Nanomaterials for Energy Related Applications.
That seminar provided an overview of research activities in the area of synthesis and manufacturing of nanostructured carbon materials with focus on supercapacitors and other energy-related applications. Supercapacitors are devices that store electrical energy electrostatically and are used in applications where batteries cannot provide sufficient power or charge-discharge rates. Until now, their higher cost, compared to batteries with similar performance, has been limiting the use of supercapacitors in many household, automotive and other cost-sensitive applications.
That presentation describes the material aspects of supercapacitor development, addresses unresolved issues and outlines future research directions. High surface area carbon materials are widely used as supercapacitor electrodes. Extraction of metals from carbides can generate a broad range of potentially important carbon nanostructures, which range from porous carbon networks to onions and nanotubes. They are known as Carbide-Derived Carbons (CDC). The CDC structure depends on the crystal structure of the carbide precursor as well as process parameters including temperature, time and environment. Extraction of silicon, boron, aluminum, zirconium or titanium from their respective carbides by chlorine at 200-1200°C results in the formation of micro- and mesoporous carbons with the specific surface area up to 3000 m²/g. CDC technology allows the control of carbon growth on the atomic level, monolayer by monolayer, with a high accuracy. The pore size to ion size ratio determines the efficiency of electrochemical energy storage systems. Design of nanoporous carbons for supercapacitor electrodes, hydrogen and methane storage, fuel cells and other applications will be addressed in this presentation.