報告題目：Double layer effects on electrocatalytic reactions: Frumkin corrections and beyond

報告人：黃俊教授（德國于利希研究中心，德國亞琛工業大學）

主持人（邀請人）： 趙曉 教授

報告時間：2023年5月26日上午9:30-10:30

報告地點: 唐敖慶樓D區 D429

主辦單位：汽車材料教育部重點實驗室，伟德bv1946官网

摘要：Double layer effects on outer-sphere electron transfer was conceived by Frumkin in the 1930s, experimentally studied by the Frumkin school in the 1950-70s, and enriched greatly since 1970s thanks to new developments in experimental single crystals etc. and theoretical first-principles based approaches electrochemistry. This spectacular research line will be briefly reviewed in the first part of my talk. The main part of my talk is about threefold challenges of understanding of double layer effects on inner-sphere electron transfer to which electrocatalytic reactions belong. First, the double layer structure and properties are dramatically changed by specific adsorption and chemisorption of electrolyte species. Second, double layer effects on inner-sphere electron transfer reactions go beyond electrostatics; instead, short-range electronic effects and their interplay with electrostatic effects are essential. Third, as electrocatalytic reactions involve multiple electrons and the double layer structure is influenced by mass transport in the electrolyte solution, a hierarchal consideration of multielectron microkinetics, double layer charging and mass transport is important to comprehend the double layer effects.

Key references

[1]. Tsirlina G. The role of supporting electrolyte in heterogeneous electron transfer. Journal of Solid State Electrochemistry, 2017. [An excellent review on Frumkin corrections, and my first part will heavily rely on this paper]

[2]. Huang J. Zooming into the Inner Helmholtz Plane of Pt(111)-Aqueous Solution Interfaces: Chemisorbed Water and Partially-Charged Ions. JACS Au, 2023 [This paper discusses newcompared to non-electrocatalytic metals features of electrocatalytic double layers at the example of Pt 111]

[3]. Huang J. Mixed quantum-classical treatment of electron transfer at electrocatalytic interfaces: Theoretical framework and conceptual analysis. The Journal of Chemical Physics. 2020. [On the interplay between electronic and electrostatic effects on inner-sphere electron transfer]

[4]. Huang J, Climent V, Groß A, Feliu JM. Understanding surface charge effects in electrocatalysis. Part 2: Hydrogen peroxide reactions at platinum. Chinese Journal of Catalysis. 2022. [a hierarchal model combining multielectron microkinetics, double layer charging and mass transport]

報告人簡介：黃俊，德國于利希研究中心亥姆霍茲青年課題組長，德國亞琛工業大學初級教授。2012年獲清華大學車輛工程學士學位，2017年獲該校博士學位。2017-2019年，任中南大學特聘副教授，獨立開展研究工作。2020-2022年，受洪堡基金會資助，依次訪問了德國于利希研究中心、德國烏爾姆大學、西班牙阿利坎特大學，漫步理論電化學的小花園。