| 초록 |
Chlorine evolution reaction (CER) is one of the most important reactions in the electrochemical industry. The oxidizing chloride ions (Cl-) to various chlorine species is promising as an alternative to oxygen evolution reaction (OER). In general, DSA electrodes are used in chloro-alkali processes, which are expensive due to the high content of noble metals. To resolve this, in preceding experiment Sb-SnO2/IrTaOx/TNT electrodes with low noble metal content were fabricated through brushing and electrodeposition as electrodes for the production of HClO. This non-noble metal-based electrode can reduce cost and energy consumption by showing selectivity with OER at neutral pH and low NaCl concentration. In order to make a catalyst with better efficiency, the mechanism of the Sb-SnO2/IrTaOx/Ti electrode is to be identified. Field emission scanning electron microscopy (FE-SEM) and linear scanning voltmeter (LSV) were used to characterize the surface of the electrode and electrochemical activity. As a result, as the content of Sb increases, the Onset Potential of OER increases, which can be seen that Sb of the surface inhibits OER and increases the selectivity with CER. |
