Details

Autor(en) / Beteiligte

• Lin, Yan
• Wang, Tuo
• Zhang, Lili
• Zhang, Gong
• Li, Lulu
• Chang, Qingfeng
• Pang, Zifan
• Gao, Hui
• Huang, Kai
• Zhang, Peng
• Zhao, Zhi-Jian
• Pei, Chunlei
• Gong, Jinlong

Titel

Tunable CO 2 electroreduction to ethanol and ethylene with controllable interfacial wettability

Ist Teil von

• Nature communications, 2023-06, Vol.14 (1), p.3575

Ort / Verlag

England

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The mechanism of how interfacial wettability impacts the CO electroreduction pathways to ethylene and ethanol remains unclear. This paper describes the design and realization of controllable equilibrium of kinetic-controlled *CO and *H via modifying alkanethiols with different alkyl chain lengths to reveal its contribution to ethylene and ethanol pathways. Characterization and simulation reveal that the mass transport of CO and H O is related with interfacial wettability, which may result in the variation of kinetic-controlled *CO and *H ratio, which affects ethylene and ethanol pathways. Through modulating the hydrophilic interface to superhydrophobic interface, the reaction limitation shifts from insufficient supply of kinetic-controlled *CO to that of *H. The ethanol to ethylene ratio can be continuously tailored in a wide range from 0.9 to 1.92, with remarkable Faradaic efficiencies toward ethanol and multi-carbon (C ) products up to 53.7% and 86.1%, respectively. A C Faradaic efficiency of 80.3% can be achieved with a high C partial current density of 321 mA cm , which is among the highest selectivity at such current densities.