| 학회 |
한국재료학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 광주 김대중컨벤션센터) |
| 권호 |
27권 1호 |
| 발표분야 |
B. 나노화학/바이오 재료 분과 |
| 제목 |
CoFe2O4 prepared by metal-organic decomposition for higly efficient oxygen evolution reaction of water splitting |
| 초록 |
Cobalt ferrite (CoFe2O4) has attracted attention as a promising electrode material with a high catalytic activity for the anodic oxygen evolution reaction (OER) through electrocatalytic water splitting. In this work, the novel solution route based on metal-organic decomposition (MOD) process is successfully developed for a facile preparation of CoFe2O4. It was thermally calcinated at various temperatures ( 300 - 450 degree C ) in an air-tube furnace. It is significantly found that a drastic cation redistribution in active sites within the spinel structure of 450 degree C - calcinated CoFe2O4 leads to the dramatic enhancement OER activity, including an overpotential of 359 mV at 10 mA/cm2 and a Tafel slope of 53.8 mV/dec in 1 M KOH aqueous solution. Based on this work, a design principle of the MOD solution process developed can be applied to preparation of a greater variety of compositions. |
| 저자 |
Kyung-Hwan Kim, Yun-Hyuk Choi
|
| 소속 |
Advanced Materials and Chemical Engineering of Daegu Catholic Univ. |
| 키워드 |
Cobalt ferrite; Metal-organic decomposiotion; Electrocatalyst; Oxygen evolution reaction
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| E-Mail |
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