| 학회 | 한국공업화학회 |
| 학술대회 | 2020년 가을 (10/28 ~ 10/30, 광주 김대중컨벤션센터(Kimdaejung Convention Center)) |
| 권호 | 24권 1호 |
| 발표분야 | 학생우수논문발표(박사과정) |
| 제목 | An ultra-low loading iridium on porous gold support for proton exchange membrane water electrolyzer |
| 초록 | With interest in global warming, hydrogen produced by water electrolysis is a promising candidate for alternative for fossil fuel. For proton exchange membrane water electrolyzer (PEMWE), Ir-based oxide used as an anode which showed high performance for oxygen evolution reaction (OER). However, its high price and scarcity prevent from commercialization. In this study, low loading Ir-based catalyst on Au were fabricated by self-terminated electrodeposition and subsequent oxidation process. By normalizing the geometric OER activity by electrochemical surface area, intrinsic OER activities were obtained. Through controlling the number of Ir deposition and oxidation process, the Ir valency and electronic structure were modified. Conclusively, it was confirmed that the intrinsic OER activity was strongly affected by electronic structure for Ir-Au interface. Then, fabricated electrode was employed for an anode of PEMWE single-cell and showed remarkable mass activity. |
| 저자 | 김현기, 김준형, Guo Wenwu, 한경호, 홍석진, 안상현 |
| 소속 | 중앙대 |
| 키워드 | Self-terminated electrodeposition; Iridium; oxygen evolution reaction; proton exchange membrane water electrolyzer |
