| 학회 |
한국화학공학회 |
| 학술대회 |
2017년 봄 (04/26 ~ 04/28, ICC 제주) |
| 권호 |
23권 1호, p.1383 |
| 발표분야 |
전기화학반응기술 관련 심포지엄(산학연관 협력위원회) |
| 제목 |
Electrochemical CO2 Conversion toward High Ethylene Selectivity |
| 초록 |
An appealing option for the conversion of solar energy to fuels is the (photo)-electrochemical reduction of CO2 (CO2RR) using water as the source of hydrogen. It has been known that polycrystalline Cu is prone to produce C1 products, mainly methane in aqueous solution. The product selectivity of such conversion can be affected by the electrolyte composition including anions and cations. Nanostructuring of polycrystalline copper surfaces via electrochemical cycling in the presence of different halide anions in the electrolyte allows for a suppression of methane and an enhancement of ethylene formation. On the other hands, cations have direct influence on CO2RR. Increasing the size of mono-valent cations can increase the selectivity and activity to ethylene by lowering of pKa of deprotonation of the hydrated cations at the cathode, which facilitates hydrogenation of the reaction intermediates. |
| 저자 |
권영국 |
| 소속 |
한국화학(연) |
| 키워드 |
Electrochemistry; Carbon Dioxide; Ethylene
|
| E-Mail |
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| 원문파일 |
초록 보기 |
