报告题目：Hydrogen electrocatalysis:from mechanistic study to advanced catalyst development

报告人：Dr. Wenchao Sheng (Department of Chemical Engineering, Columbia University, USA)

报告时间：2015年4月7日15:30-17:00

报告地点：化学A楼528演讲厅

邀请人：马紫峰教授（beat365）

报告简介：

H2-based polymer membrane fuel cells, electrolysers and solar hydrogen generators are keycomponents in a sustainable hydrogen economy. In particular, alkaline membrane based devices arepromising alternatives to their acidic counterparts owing to the availability of earth-abundant metalcatalysts for the oxygen reactions, while such catalysts have not been reported for the hydrogenreactions. Moreover, previous research on the hydrogen oxidation/evolution reactions on the state-of-the-art Pt catalysts has shown significantly reduced kinetics in alkaline environment than in acids,which projects an increased Pt loading in alkaline membrane based devices, and impedes their largescale commercialization. In this talk, I will present the mechanistic study of the hydrogenoxidation/evolution kinetics of Pt in a full range of solution pH, especially in alkaline environment, andshow how fundamental understanding guides efficient catalyst design and development for thehydrogen reactions.

报告人简介：

Dr. Wenchao Sheng is currently a postdoctoral researcher in the Department of Chemical Engineeringat Columbia University. She obtained her B.Sc and M.Sc from the Department of Chemistry at TongjiUniversity and Ph.D from the Department of Chemistry at MIT. Her Research interests includefundamental understanding of the electrocatalysis and surface science for the renewable energy storageand conversion, electrochemical hydrogenation for liquid fuel production, and synthesis ofnanostructured materials for energy applications.