应化工与化学学院尹鸽平教授邀请，新加坡国立大学Qing Wang（王庆）博士将于近日来我校访问并作学术报告，欢迎感兴趣的老师和同学参加。
讲座题目：Redox Targeting-based Flow Batteries for Large-scale Energy Storage
讲座时间：2017年7月21日上午9：30
讲座地点：理学楼801
报告人简介：Dr. Qing Wang (王庆) is an Associate Professor at the Department of Materials Science & Engineering, National University of Singapore. His research interest is “Charge Transport in Mesoscopic Energy Conversion and Storage Systems”. He did undergraduate and master study in electrochemistry in Harbin Institute of Technology in 1999 and obtained his PhD in Physics at Institute of Physics, Chinese Academy of Sciences in 2002. Before he moved to Singapore, he had been working with Prof. Michael Grätzel at École Polytechnique Fédérale de Lausanne (EPFL), Switzerland and Dr. Arthur J. Frank at National Renewable Energy Laboratory (NREL), USA, in the area of sensitised mesoscopic solar cells.Based on the redox targeting concept, he is currently working on a new battery technology — redox flow X-batteries, for advanced large-scale energy storage.
讲座内容简介：In conventional lithium-ion batteries, active materials are coated on current collector with binder and carbon additives in order to form conducting electrode sheets. In 2006, we proposed “redox targeting” of poorly conductive materials such as LiFePO4to eliminate the need for carbon additives. In the presence of redox shuttle molecules, an active electrode material can be reversibly delithiated/lithiated via redox targeting reactions without being attached to the current collector. The transport of electrons between the material and the current collector is mediated by the diffusion of redox molecules dissolved in the electrolyte. The application of redox targeting reactions to both the anode and cathode intuitively leads to a novel energy storage device — Redox Flow Lithium Battery (RFLB). In RFLB, the active materials are stored statically in two separate tanks and power is produced in the cell stack by the redox reactions of redox mediators, disruptively changing the operation mode of the conventional batteries. The transport of electrons between the active materials and the current collector is mediated by the circulation of redox shuttle molecules in the electrolyte. RFLB is poised to have significant advantages over other types of electrochemical energy storage devices in terms of energy density, safety, and operation flexibility for large-scale stationary energy storage. In this talk, Dr. Wang will report the latest progress on the development of RFLB and the application of redox targeting concept to other battery chemistries, such as redox flow Li-O2battery and solar rechargeable flow battery.
