One-pot synthesis of Fe2O3/C by urea combustion method as an efficient electrocatalyst for oxygen evolution reaction |
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| Affiliation: | 1. State Key Laboratory for Powder Metallurgy, Central South University, Changsha, China;2. School of Chemistry and Chemical Engineering, Central South University, Changsha, China;1. School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, PR China;2. Analysis and Testing Center, Jiangsu University, Zhenjiang 212013, PR China;1. Department of Chemistry, Chonnam National University, Gwangju 500-757, South Korea;2. School of Chemical Engineering, Yeungnam University, Gyeongsan 712-749, South Korea;3. Department of Chemistry Education and Optoelectronic Convergence Research Center, Chonnam National University, Gwangju 500-757, South Korea;1. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China;2. School of Environmental & Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, PR China |
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| Abstract: | The hematite type Fe2O3/C catalyst for oxygen evolution reaction (OER) was prepared using a facile urea combustion method. The Fe2O3/C electrode showed excellent electrocatalytic ability towards OER in alkaline medium. The phase and morphology of the product were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The sintering temperature is 600 °C, and the calcination time is 3 h, which is the best preparation process condition. The particles were irregular spherical with the size of 10–30 nm and dispersed uniformly. The current density of the Fe2O3/C electrode was 147 mA cm−2 at 0.6 V (vs. HgO/Hg) in 6 mol L−1 KOH electrolyte at room temperature. |
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| Keywords: | Electrocatalytic OER Oxide Urea combustion method EIS |
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