報告時間：2023年4月26日（星期三）10:00-11:30
報告地點：材料學院601會議室
報 告 人：Jingjie Wu Assistant Professor
工作單位：美國辛辛那提大學
舉辦單位：材料科學與工程學院、先進功能材料與器件安徽省重點實驗室
報告簡介：
CO2 capture and utilization can be a feasible way for the net-zero transition of the chemical industry when concerted efforts buildup the carbon-capture-and-utilization value chain worldwide. The frontier research on CO2 electrolyzers focuses on increasing selectivity toward a single product, promoting energy efficiency, reducing CO2 crossover, and enhancing stability. The first part of this presentation will introduce our recent progress in developing tandem electrodes for promoting the C-C coupling (rate-determining step, RDS) kinetics and designing catalysts based on reaction descriptor for steering the post-C-C coupling selectivity (selectivity-determining step, SDS). The collective control of RDS and SDS could direct CO2 conversion to C2H4 with 70% Faradaic efficiency and a partial current density of >1.5 A cm-2. The second part of this presentation will address the coupled carbon and energy efficiencies by pairing CO2 reduction with electrochemical oxidative dehydrogenation and efficient oxygen evolution reaction under pure water conditions. Finally, this talk will present the visualization of electrode flooding causing CO2 reduction performance degradation and discuss strategies to mitigate flooding when operating at a current density of industrial relevance.
報告人簡介：
Jingjie Wu is an Assistant Professor of Chemical Engineering at the University of Cincinnati and will be promoted to Associate Professor with tenure effective in August. He received Ph.D. in Chemical Engineering from the University of South Carolina and got postdoctorate training at Rice University. His research interests focus on the transformative development of catalysts, electrodes, processes, and modular reactors for the low-carbon synthesis of chemicals and fuels using renewable energy. His research has been recognized by Research Award for Early Career Faculty at the University of Cincinnati and ORAU Ralph E. Powe Junior Faculty Enhancement Award, and as Emerging Investigator or Rising Star by many journals, including Journal of Materials Chemistry A, Chemical Communications, Chem Catalysis, Materials Chemistry Frontiers, and Energy & Fuels.
