Prof.  Sergey  RYAZANTSEV
Shenzhen MSU-BIT University,  China

Title: Advanced spectroscopy studies of materials for metal-ion batteries

Abstract:

Development of new materials for metal-ion batteries and improvement of its characteristics requires extensive research work involving great variety of experimental techniques. Application of various spectroscopic techniques in the in situ (operando) and ex situ (post portem) regimes to the studies of the battery materials and the physico-chemical process occurring with battery operation provides deep fundamental understanding at atomic-molecular scale, which is required for rational design of new materials for batteries. The talk will cover the studies of various electrode materials for lithium-, sodium-, potassium-, and magnesium-ion batteries by means of vibrational (FTIR and Raman), electron paramagnetic resonance and X-ray absorption spectroscopies. Both cathode and anode materials of different types (polyoxoanion compounds, Prussian blue analogues, carbon materials, coordination polymers, and transition-metal oxides) were investigated. The results include original spectroscopic insights into the characteristics of novel electrode materials for metal-ion batteries. Particularly, the discovered charge/dischargeinduced changes in various battery materials affecting their electrochemical performance will be highlighted.

Keywords: Metal-ion batteries, In situ characterization, X-ray absorption spectroscopy, Vibrational spectroscopy, EPR spectroscopy

Biography:

Dr. Sergey Ryazantsev is currently an Associate Professor at Department of Materials Science, Shenzhen MSU-BIT University (China). He graduated (2013) and got his Ph.D. degree (2017) from Department of Chemistry, Lomonosov Moscow State University (Russia). He worked as Invited Researcher at University of Helsinki (Finland), as Research Fellow at Lomonosov Moscow State University and at Skolkovo Institute of Science and Technology (Russia). He also taught multiple courses (as Invited Lecturer, Senior Lecturer, Teaching Associate Professor) at several leading universities in Russia – Lomonosov Moscow State University, Moscow Institute of Physics and Technology, Skolkovo Institute of Science and Technology, National Research University Higher School of Economics, Mendeleev University of Chemical Technology of Russia. His research is devoted to applications of in situ spectroscopic techniques in the studies of photo-, radiation-, and electro-chemical processes, with particular interest to the spectroscopic studies of battery materials. Till now, he has published over 40 scientific articles in these areas, with a total citation of 1000+ and a h-index of 17.