SNUEI

Cation Dehydration by Surface-Grafted Phenyl Groups for Enhanced C2+ Production in Cu-Catalyzed Electrochemical CO2 Reduction

2025 · Journal of the American Chemical Society

저자

Miyeon Chang, Suhwan Yoo, Wenchao Ma, Hubert H. Girault, 황윤정 (Yun Jeong Hwang), Xile Hu

연구주제

CO2 Reduction Techniques and Catalysts · Electrocatalysts for Energy Conversion · Carbon dioxide utilization in catalysis

NTIS 과학기술표준분류

에너지/자원만에너지·환경·원자력 확장

에너지/자원 > 온실가스 처리 > CO2 전환기술에너지 외

배정 근거: AI 키워드가 잡은 NTIS 과제의 분류(정책 연계 맵과 같은 방법).

AI 연구 키워드·방법

구리 촉매 전기화학적 CO2 환원 전해질 양이온 효과 다탄소 생성물(C2+) 표면 리간드 엔지니어링

키워드 (OpenAlex)

electrochemical CO2 reduction multi-carbon products ethylene production copper electrocatalysts interfacial water structure hydrogen bond network water dissociation outer Helmholtz plane

초록

High Resolution Image Download MS PowerPoint Slide The challenge to produce multicarbon (C 2+ ) products in high current densities in the electrochemical reduction of carbon dioxide (CO 2 RR) has motivated intense research. However, the ability of solvated cations to tune and activate water for C 2+ production in the CO 2 RR has been overlooked. In this study, we report the incorporation of a covalently grown layer of functionalized phenyl groups on the Cu surface that leads to a 7-fold increase in ethylene production (to −530 mA cm –2 ) and a 6-fold increase in C 2+ products (to −760 mA cm –2 ). Our mechanistic study, notably by in situ infrared, isotope effect, and electrochemical impedance spectroscopy, reveals that the surface grafting provokes the reduction of the hydration shell around alkali cations at the electrode–electrolyte interface. This reduction weakens the hydrogen bond n…

이 논문을 지원한 국가R&D 과제 (NTIS 성과)

NTIS 성과DB(2020–24)에서 DOI 매칭 없음

인접 그래프

노드 hover = 이웃 강조 · 1회 클릭 = 고정 · 고정된 노드 다시 클릭 = 페이지 이동

이 문서와 연결된 페이지

교수 1

황윤정

연구주제 1

CO2 Reduction Techniques and Catalysts

정책분야 1

온실가스 처리

키워드 5

전기화학적 CO2 환원 · 구리 촉매 · 다탄소 생성물(C2+) · 전해질 양이온 효과 · 표면 리간드 엔지니어링