| 초록 |
Transition metal hydroxides have emerged as one of the important candidates for electrochemical water splitting, especially oxygen evolution reaction (OER) activity. In this study, we report a facile synthesis of ultrathin-layered nickel hydroxide (Ni(OH)2) with abundant active sites for OER. Furthermore, the as-prepared Ni(OH)2 are employed as an efficient templates for depositing gold nanodots to form Ni(OH)2@Au dots nanohybrids. The obtained gold nanodots loaded-nanohybrid shows enhanced OER performance due to the increased electron conductivity. The Ni(OH)2@Au dots exhibit substantially lower overpotential at a current density of 5 mA cm-2 and a smaller Tafel slope (390 mV and 120 mV dec-1, respectively) compared with those of Ni(OH)2 (540 mV and 324 mV dec-1, respectively). |
