Asymmetric CO–CHO Coupling over Pr Single-Atom Alloy Enables Industrial-Level Electrosynthesis of Ethylene DOI
Yanteng Xiao, Fuqing Yu,

Chenfeng Xia

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

The electrocatalytic conversion of carbon dioxide (CO2) to ethylene (C2H4) holds great promise for sustainable chemical synthesis, yet achieving industrially relevant production rates remains a significant challenge. Through computational screening, we have identified praseodymium (Pr) single-atom alloy embedded in copper (Cu) catalyst (Pr@Cu) that exhibits superior CO2 activation and remarkably low energy barrier asymmetric *CO-*CHO coupling, primarily by facilitating the *CHO intermediate formation. Our optimized catalyst, Pr@Cu-2 (6 wt % Pr), achieves C2H4 Faradaic efficiency (FE) 64.2% at -1.6 V versus reversible hydrogen electrode (RHE) under high current density 1200 mA cm-2 reduction reaction (CO2RR). Furthermore, when integrated into 100 cm2 membrane assembly (MEA) electrolyzer, demonstrates robust performance, maintaining continuous rate 21.3 mL min-1 20 A over 200 h. This work provides fundamental insights role Pr alloys CO2RR highlights their potential scalable electrosynthesis.

Language: Английский

Asymmetric CO–CHO Coupling over Pr Single-Atom Alloy Enables Industrial-Level Electrosynthesis of Ethylene DOI
Yanteng Xiao, Fuqing Yu,

Chenfeng Xia

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

The electrocatalytic conversion of carbon dioxide (CO2) to ethylene (C2H4) holds great promise for sustainable chemical synthesis, yet achieving industrially relevant production rates remains a significant challenge. Through computational screening, we have identified praseodymium (Pr) single-atom alloy embedded in copper (Cu) catalyst (Pr@Cu) that exhibits superior CO2 activation and remarkably low energy barrier asymmetric *CO-*CHO coupling, primarily by facilitating the *CHO intermediate formation. Our optimized catalyst, Pr@Cu-2 (6 wt % Pr), achieves C2H4 Faradaic efficiency (FE) 64.2% at -1.6 V versus reversible hydrogen electrode (RHE) under high current density 1200 mA cm-2 reduction reaction (CO2RR). Furthermore, when integrated into 100 cm2 membrane assembly (MEA) electrolyzer, demonstrates robust performance, maintaining continuous rate 21.3 mL min-1 20 A over 200 h. This work provides fundamental insights role Pr alloys CO2RR highlights their potential scalable electrosynthesis.

Language: Английский

Citations

0