Highly selective and stackable electrode design for gaseous CO2 electroreduction to ethylene in a zero-gap configuration
- Highly selective and stackable electrode design for gaseous CO2 electroreduction to ethylene in a zero-gap configuration
- 채근화; 민병권; 황윤정; 오형석; 이웅; 이웅희; 임철완; 이시영; 최창혁
- CO2 reduction; Ethylene; Zero-gap configuration; KOH-incorporated Cu
- Issue Date
- Nano energy
- VOL 84-105859(10)
- The electrochemical reduction of CO2 to ethylene has the potential to reduce greenhouse gas emissions while producing commodity chemicals for plastics; however, a scalable and feasible system for this remains a challenge. Herein, we report an efficient and stackable electrode design for the electrolysis of CO2 to ethylene. Using KOH-incorporated Cu nanoparticle (Cu-KOH) as the cathode in a zero-gap electrolyzer, Faradaic efficiency of 78.7% for C2 products was achieved at a current density of 281 mA cm？2. Among C2 products, ethylene with a 54.5% FE was dominant product. For mass production, three membrane electrode assemblies (MEAs) were stacked and operated. Operando X-ray absorption spectroscopy under the zero-gap electrolyzer suggested mainly metallic Cu state with some persistent oxide-derived Cu species in Cu-KOH, including Cu2O and Cu(OH)2, which expected a synergistic effect for the conversion of CO2 to C2H4. Our findings provide a new strategy for converting CO2 to C2H4, which is expected to accelerate the commercialization of high-value chemical production through electrochemical CO2 reduction.
- Appears in Collections:
- KIST Publication > Article
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.