MSE Seminar - Professor Gleb Yushin - Georgia Tech
Title: Nanostructured Materials for Energy Storage Applications
High power energy storage devices, such as supercapacitors and Li-ion batteries, are critical for the development of zero-emission electrical vehicles, large scale smart grid, and energy efficient ships and locomotives. The energy storage characteristics of supercapacitors and Li-ion batteries are mostly determined by the specific capacities of their electrodes, while their power characteristics are influenced by the maximum rate of the ion transport. The talk will focus on the development of nanocomposite electrodes capable to improve both the energy and power storage characteristics of the state of the art devices. Carbon-polymer, carbon-metal oxide and metal-metal oxide nanocomposites have been demonstrated to greatly exceed the specific capacitance of traditional electrodes for supercapacitors. Selected materials showed the unprecedented ultra-fast charging and discharging characteristics. Rationally designed silicon-carbon-polymer and sulfur-carbon-polymer composites showed up to 8 times higher specific capacity than conventional electrodes utilized in Li-ion batteries. Stable performance for 100-2000 cycles has been demonstrated. Finally, the talk will provide several examples of multifunctional electrode materials demonstrating both high energy storage capacities and ultra-high specific strength and toughness. In order to overcome the limitations of traditional composites precise control over the materials’ structure and porosity at the nanoscale was required.
Gleb Yushin is an Associate Professor of the School of Materials Science and Engineering at The Georgia Institute of Technology. Gleb has over 17 years of research experience in the synthesis and characterization of nanostructured materials. For his contributions to these areas, he has received numerous awards and recognitions, including the R&D 100 ward, National Science Foundation Faculty Early Career Development Award, Air Force Office of Scientific Research Young Investigator Award, Honda Initiation Award, Petroleum Research Fund Doctoral New Investigator Award, NASA NANO 50Award, Roland B. Snow Award from the American Ceramic Society, various best poster awards from the Electrochemical Society, Materials Research Society, and North American Membrane Society meetings, and multiple awards at ceramographic competitions.