10/02(금) 나노융복합산업기술 특강은 포스텍 최창혁 교수님을 모시고 진행합니다.

관심있는 분들의 많은 참석 부탁드립니다.

ㅁ주제:  The intriguing role of alkali cations at the electrified interface in electrocatalysis

ㅁ일시: 10/02(금) 15:00

ㅁ장소: 제2종합연구동 83188호

ㅁ약력: 

ㅁ초록: 

Electrocatalysis at the electrode-electrolyte interface is fundamentally governed by electron transfer across the electric double layer (EDL), highlighting a crucial mechanistic link between electrocatalytic properties and EDL structure. A central question in this field is the role of alkali metal cations at this interface, commonly known as the “cation effect”. This presentation will outline our ongoing research aimed at uncovering the fundamental principles underlying the cation effect in several important electrochemical reactions in aqueous environments.^1,2 Using advanced in situ analytical techniques,³ we have discovered that alkali metal cations are not merely spectators, as traditionally believed, but actively influence the kinetics and mass transport in electrocatalysis. The identity and concentration of the alkali metal cation is critical in modulating electrocatalytic activity and selectivity,⁴ as well as affecting electrode stability.⁵ We will present a mechanism of cation-coupled electron transfer and its potentially interesting role in alkaline hydrogen evolution reactions. By gaining a deeper understanding of how alkali metal cations affect electrocatalysis, we will envision a novel conceptual framework for improving electrocatalytic processes.