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|
| Type |
Poster Presentation |
| Area |
Electrochemistry |
| Room No. |
Exhibition Hall 2 |
| Time |
4월 18일 (목요일) 11:00~12:30 |
| Code |
ELEC.P-460 |
| Subject |
Synthesis and characterization of cobalt-iron composites for electrochemical water splitting |
| Authors |
Sujin Jo, Sunguk Noh, Jun Ho Shim*
Department of Chemistry, Daegu University, Korea
|
| Abstract |
The electrochemical water splitting has long been considered a promising approach to producing clean hydrogen fuel using renewable energy sources. The hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are the major half reactions occurring in the cathode and the anode respectively in the electrochemical water splitting reaction. At present, IrO2 (or RuO2) and its compound materials are the most traditional anodic activity catalysts for OER. However, precious materials have disadvantages, such as high cost, scarce resources and inferior durability, which impede their widespread commercialization and limit their performance. Therefore, there is an urgent need to search for new cheap metal catalysts with unexceptionable electrocatalytic properties for OER. Herein, we present the synthesis and characterization of nanostructured cobalt-iron composites (Co-Fe) that exhibit catalytic activity comparable to those of the state-of-the-art nonprecious catalysts. The catalysts are fabricated from inexpensive cobalt and iron precursors through a corrosion strategy without any additional agents, such as reductants. The Co-Fe catalysts are characterized by X-ray diffraction, transmission electron microscopy, and scanning electron microscopy. We also investigate the electrocatalytic activity of the Co-Fe catalysts for OER and compare them with commercial carbon-supported iridium. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2016R1D1A1B03930895). |
| E-mail |
jo03238@daegu.ac.kr |
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123rd General Meeting of the KCS