应betway必威、功能有机分子化学国家重点实验、甘肃省有色金属化学与资源利用重点实验室邀请，新加坡南洋理工大学徐??川教授与华东师范大学杨海波教授将于线上为我院师生做学术报告并讨论交流，欢迎感兴趣的师生参加。

报 告 人：徐??川 教授

报告题目：A brief introduction on Pt electrochemistry: the story behind nano-sizing

报告时间：2022年11月24日（星期四） 14:30

报 告 人：杨海波 教授

报告题目：超分子拓扑聚合物的精准构筑及性质研究

报告时间：2022年11月24日（星期四） 15:30

腾讯会议号：739 377 193 会议密码：970203

报告摘要：

The development of fuel cells and water electrolzyers has been reaching a technical bottom-neck for years. The high cost of Pt catalysts is one of most critical issues in these devices. Much effort has been given in recent years on exploring alternatives to Pt or reducing the usage of Pt in electrodes. Exciting progress has been made. For example, bimetallic Pt-X catalysts exhibited significantly improved activity towards oxygen reduction reaction. Non-precious metal catalysts, such as sulphides, doped carbons, transition metal oxides, and etc., have been also investigated intensively and some of them are found highly active for hydrogen evolution, oxygen reduction, and oxygen evolution reactions. In this tutorial talk, we put our attention on the conventional electrode material, Pt, which is also the state of the art electrode in those devices. Pt is the best single element in the elemental table for fuel cells and the cathodic reaction (HER) of water electrolzyers. The most fundamentals of fuel cell and electrolzyer electrochemistry are established through investigating Pt and its electrochemical behaviour. This tutorial will introduce the electrochemistry of Pt in terms of electrochemical surface area (ECSA), ORR, MOR, and HER. Some concepts related to the catalyst performance evaluation, such as specific activity (intrinsic activity), mass activity, and stability will be discussed. The origin of size effects on activity and durability of Pt catalysts will be also introduced. With these understandings, one should be able to extend the knowledge and protocols of Pt to other new catalysts under the development. This tutorial may be also helpful to new electrochemistry learners, who are interested in new electrocatalyst development.