Amorphizing of Cu Nanoparticles toward Highly Efficient and Robust Electrocatalyst for CO2 Reduction to Liquid Fuels with High Faradaic Efficiencies

• Published in: Advanced materials (Weinheim) Vol. 30; no. 14; pp. e1706194 - n/a
• Main Authors: Duan, Yan‐Xin, Meng, Fan‐Lu, Liu, Kai‐Hua, Yi, Sha‐Sha, Li, Si‐Jia, Yan, Jun‐Min, Jiang, Qing
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 05.04.2018
• Subjects: Alternative energy; Amorphization; amorphous Cu; Carbon dioxide; Catalysis; Catalysts; Catalytic activity; Chemical reduction; Chemical synthesis; CO2 electroreduction; Ethanol; Formic acid; Fossil fuels; Liquid fuels; Nanoparticles; selectivity
• ISSN: 0935-9648; 1521-4095; 1521-4095
• DOI: 10.1002/adma.201706194

Conversion of carbon dioxide (CO2) into valuable chemicals, especially liquid fuels, through electrochemical reduction driven by sustainable energy sources, is a promising way to get rid of dependence on fossil fuels, wherein developing of highly efficient catalyst is still of paramount importance. In this study, as a proof‐of‐concept experiment, first a facile while very effective protocol is proposed to synthesize amorphous Cu NPs. Unexpectedly, superior electrochemical performances, including high catalytic activity and selectivity of CO2 reduction to liquid fuels are achieved, that is, a total Faradaic efficiency of liquid fuels can sum up to the maximum value of 59% at −1.4 V, with formic acid (HCOOH) and ethanol (C2H6O) account for 37% and 22%, respectively, as well as a desirable long‐term stability even up to 12 h. More importantly, this work opens a new avenue for improved electroreduction of CO2 based on amorphous metal catalysts. An amorphous Cu catalyst displays superior catalytic activity toward electroreduction of CO2 with a remarkable selectivity for the reduction to liquid fuels (HCOOH andC2H6O) relative to a crystalline Cu catalyst.