| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 가을 (10/31 ~ 11/02, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
22권 2호 |
| 발표분야 |
전기화학_포스터 |
| 제목 |
3-D thin-film ZnFe2O4 nanoarray-nickel foam composite with high catalytic activity towards Oxygen evolution reaction |
| 초록 |
Oxygen evolution reaction (OER) catalyst are essential to realize commercial application of fuel cells. Zn-ferrite hold great potential in this regard due to its low cost. However, it has poor conductivity and low stability. In this study, we show that direct growth of Zn-ferrite on nickel foam (NF) and control of its morphology can solve the aformentioned problems. The growth of ZnFe2O4 on NF mitigates against its poor conductivity. While, morphology and porosity control of ZnFe2O4 nano-array was done via a PVP assisted grown method. Together, these changes enhance the OER activity of Zn-ferrite such that the benchmark 10mA current density was at achived at 239 mV in 1KOH. This value is better than the activity of noble metals. What is more, the curent density remained stable even after 12 hr under constant potential. Our findings show how nano-fabrication can be used to boost the catalytic activity of earth abundant materials towards useful applications. |
| 저자 |
Richard Appiah-Ntiamoah, 김헌, Medhen Wondwossen Abebe, Bekelcha Tesfaye
|
| 소속 |
명지대 |
| 키워드 |
green energy; electrocatalyst; OER; ZnFe2O4; Nanocomposite
|
| E-Mail |
|
