| 초록 |
The development of efficient electrocatalysts for oxygen evolution reaction (OER) is essential for the practical application of water splitting. Herein, we have synthesized M(OH)2 (M=Fe, Co) using electrodeposition method on nickel foam. In-depth characterization of all the films using X-ray photoelectron emission spectroscopy (XPS), field emission scanning electron microscopy (FE-SEM), electrochemical impedance spectroscopy (EIS) and linear sweep voltammetry (LSV) techniques, which reveals their structural, morphological and electrochemical properties, respectively. The Fe(OH)2 and Co(OH)2 films show high catalytic activity with 265 and 300 mV overpotential to reach the current density of 10 mA cm-2 and with stability (24 h) in 1 M KOH solution. The better OER activity of both films originated from high active sites, enhanced surface, and charge transport capability. |
