Engineering the CuO–HfO2 interface toward enhanced CO2 electroreduction to C2H4. Issue 53 (13th June 2022)

• Record Type: Journal Article
• Authors: Li, Xin; Li, Lifen; Wang, Lijun; Xia, Qineng; Hao, Leiduan; Zhan, Xinyu; Robertson, Alex W.; Sun, Zhenyu
• Is Part Of: Chemical communications. Volume 58:Issue 53(2022)
• Page Start: 7412
• Page End: 7415
• Publication Date: 2022-06-13
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d2cc01776h
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : We demonstrate tuning of the CuO x @HfO2 interface for greatly enhanced electrocatalytic CO2 reduction to produce C2 H4 . Abstract : We report significantly enhanced electrochemical CO2 reduction (ECR) to C2 H4 by tuning the interface of a metal oxide composite (CuO x /HfO2 ), enabling a C2 H4 faradaic efficiency as high as 62.6 ± 1.3% at 300 mA cm −2, in contrast to only 11.6 ± 1.6% over pure CuO. Collective knowledge from multiple control experiments, density functional theory calculations, and operando Raman study reveals that the CuO x –HfO2 interface greatly strengthens CO2 adsorption and the binding of *CO for further C–C coupling to yield C2 H4 .