Dr. Ekaterina PomerantsevaMaterials Science and Engineering, Drexel University
With increase in the world’s population and climate change, the importance of and demand for the energy storage and water purification systems continue to grow. In order to keep pace with rising levels of consumption, the performance of these systems needs to be improved while maintaining low cost and minimizing environmental impact. As a result, novel scalable and cost-efficient materials that exhibit superior performance are sought for.
In this talk, I will present chemical synthesis approaches that can be used to control structure and composition of the layered and tunnel oxides with the aim to achieve enhanced electrochemical performance in energy storage and water purification systems. Our approaches are based on the insertion of the specific amounts of inorganic ions and organic molecules between the layers or inside the tunnel space of the redox active transition metal oxides prior to electrochemical testing. Analyses of the synthesized materials and their electrochemical properties in reversible ion intercalation processes elucidate fundamental synthesis – composition – structure – performance relationships that govern specific capacity, cycle life and rate capability of the electrode materials in batteries, pseudocapacitors and water desalination devices. Ultimately, the materials and methods developed in this work have the potential to enable next-generation technologies based on reversible cycling of ions that will provide not only more efficient energy storage and water treatment solutions but also advanced electrochromics, sensing and actuation systems.
Ekaterina Pomerantseva is Anne Stevens Assistant Professor of Materials Science and Engineering at Drexel University. She received a B.S. degree in Materials Science in 2000 and M.S. degree in Chemistry and Materials Science in 2003 from Lomonosov Moscow State University, a M.S. degree in Biochemistry in 2005 from McGill University, and a Ph.D. degree in Solid-State Chemistry in 2007 from Lomonosov Moscow State University. Prior to joining Drexel she held Postdoctoral appointments in the Institute for Systems Research at the University of Maryland College Park (2010 – 2013) and the Department of Chemistry at the University of Waterloo (2009 – 2010). She has co-authored over 45 journal papers. In 2016, she received the International Association of Advanced Materials (IAAM) Energy Technologies Award, which is presented for notable and outstanding research in the field of smart energy technologies. Her research interests lie in the development and characterization of novel nanostructured materials for batteries, pseudocapacitors and water treatment with the goal to better understand intercalation-based electrochemical processes at nanoscale.