关于举行林雪平大学Mikhail Vagin副教授学术报告的通知

报告题目：Electrocatalysis on conducting polymers

主 讲 人：Mikhail Vagin副教授（瑞典林雪平大学）

邀 请 人：马於光 院士

报告时间：11月2号（星期四） 15:00-16:00

报告地点：北区科技园1号楼发光国重502会议室

欢迎广大师生踊跃参与~~~

报告摘要

The electrocatalysis behind the direct chemical-to-electrical energy interconversion is one of key facets in the development of sustainable economy. This results in a technological demand for a variety of applications such as electrical transportation, electrified synthesis and the grid balancing. Here are three examples of problematized electrocatalytic processes. (A) The sluggish kinetics and multistep character of oxygen reduction reaction (ORR) are causing losses in electrical energy conversion and poor selectivity, which limit the wide implementation of oxygen-associated energy conversion technologies. (B) The water electrolysis yielding the hydrogen evolution reaction (HER), the key process in technologies of green hydrogen, provides only 4% of worldwide hydrogen production due to the high catalyst cost. (C) The control of the proton-coupled electron transfers on organic redox molecules such as benzenediols. These three illustrate the stimulus of the intensive research on noble-metal-free electrocatalysts.

Intrinsically conducting polymers, the organic materials synthesised from abundant element, constitute a distinct class of molecular electrocatalysts [1, 2] attributed with behaviour of mixed ion-electron conductors (MIEC). Firstly, the landscape of ORR phenomena happening on p- and n-type intrinsically conducting polymers at the mechanistic and device levels are discussed [1-3]. Secondly, the effect of proton supply is rationalized at both mechanistic and device levels for HER on PEDOT-triflate [4]. Thirdly, the significant effect of ionic transport on the rate of the proton-coupled electron transfers was observed and conceptualized as a ion-selective electrocatalysis (ISEC) [5]. Fourthly, the systematic effect of fine porosity controlled by the secondary dopant on the electrocatalysis of oxygen reduction reaction was investigated on p-type intrinsically conductive polymer as a general model of porous electrified interface.