ChBE Seminar: Qiang Zhang, Tsinghua University
Monday, August 21, 2017
10:00 a.m.-11:00 a.m.
2110, Chemical and Nuclear Engineering Building
Qiang Zhang, Associate Professor
Department of Chemical Engineering, Tsinghua University, Beijing, China
Emerging Materials Concept forLithium-Sulfur Batteries
Among various promising candidates with high energy densities, lithium-sulfur (Li-S) batteries with a high theoretical capacity and energy density are highly attractive;1-2 while the commercial application of Li-S batteries still faces some persistent obstacles, such as the low electrical conductivity of sulfur and lithium sulfide and the dissolution of polysulfides. The introduction of 3D graphene into the field of Li-S batteries sheds a light on the efficient utilization of sulfur by improving the conductivity of the composites and restraining the shuttle of polysulfides. In this presentation, the concept for the rational design of 3D graphene is explained. The advances in the use of 3D graphene in the cathode, separator, and anode is explained.3-14 New insights on the relationship between the 3D graphene structure and the electrochemical performance are presented.
Dr. Qiang Zhang graduated in 2009 from the Department of Chemical Engineering at Tsinghua University in China. After a stay in Case Western Reserve University (USA) and Fritz Haber Institute of the Max Planck Society (Germany), he was appointed Associate Professor of Chemical Engineering at Tsinghua University in 2011. He held the Newton Advanced Fellowship from Royal Society (UK) and the NSFC Young Scholar in China. His current research interests are advanced energy materials (lithium metal anode, lithium sulfur batteries, electrocatalysis). He had served as a referee for Nature Enegy, Science Adv., Nature Communications, etc. Zhang has published research results on Nature Comm, CHEM, Sci Adv, EES, Adv Mater, Angew Chem, JACS and Chem Rev - 33 of them are ESI highly cited paper.