| 학회 | 한국화학공학회 |
| 학술대회 | 2021년 가을 (10/27 ~ 10/29, 광주 김대중컨벤션센터) |
| 권호 | 27권 2호, p.2179 |
| 발표분야 | 촉매 및 반응공학 |
| 제목 | Controling Valence State of Iridium Using CeO2 for Efficient Oxygen Evolution Reaction in Acidic Media |
| 초록 | Due to sluggish kinetics and highly corrosive environment, oxygen evolution reaction (OER) is bottleneck region for the commerciallization of proton exchange membrane water electrolysis (PEMWE). Currently, Iridium-based materials are emerging as effective catalysts for OER reactions due to their superior activity and stability compared to other noble metals. However, iridium is very expensive and rare. Therefore, fabrication of highly active and stable iridium-based with reduced Ir content is essential. Herein, we introduced CeO2 as a support material for Ir due to its various beneficial effects. In particular, the unique redox properties between Ce(Ⅲ) and Ce(Ⅳ) can be useful for inducing more Ir(Ⅲ) species which is known as OER-effective. In this study, we fabricated IrOx/CeO2 with 20 wt% of Ir contents. Also displayed enhanced OER activity with a low overpotential value (263.4 mV at 10 mAcm-2) and good stability (40.2 mV increased for 10h at 10 mAcm-2). |
| 저자 | 전우태, 윤덕현 |
| 소속 | 강원대 |
| 키워드 | 촉매 |
| 원문파일 | 초록 보기 |
