| 학회 |
한국화학공학회 |
| 학술대회 |
2019년 가을 (10/23 ~ 10/25, 대전컨벤션센터) |
| 권호 |
25권 2호, p.1659 |
| 발표분야 |
에너지 환경 (Energy and Environment) |
| 제목 |
Highly selective C2 oxygenates formation from CO2 electro-conversion with high-density of Cu step-sites catalyst |
| 초록 |
Electrochemical CO2 conversion into valuable C2 fuel products has been studied intensively since these C2 products have high energy densities and can be used as a chemical feedstock and a fuel. In this work, we produced highly selective C2 oxygenates from Cu wrinkle with high density of step-sites using graphene growth process. Resulted Cu wrinkle catalyst showed high C2 products selectivity achieving 50 % of faradaic efficiency at -0.8 V vs. reversible hydrogen electrode (RHE), which is the largest value compared to previous reports (＜ ~1% at -0.8 V vs. RHE) before. The partial current density of ethylene glycol was significantly high as -6 mA/cm2 at -1.2 V (vs. RHE) indicating that suitable productivity value for a practical use. Density functional theory (DFT) calculation results showed that high ethylene glycol productivity was mainly attributed to the (310) facet of wrinkle having a low C-C coupling barrier (0.5 eV) and preferable reaction path toward ethylene glycol (0.02 eV). |
| 저자 |
김주예1, 정희태2
|
| 소속 |
1한국과학기술원, 2KAIST |
| 키워드 |
에너지 환경 |
| E-Mail |
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| 원문파일 |
초록 보기 |
