Preparation and electrochemical performance of uniform RuO2/Ti and RuO2-IrO2/Ti electrode for electrolysis of NaCl solution

The electrochemical preparation of NaClO has been widely used for the production of industrial disinfectant. To reduce the cost of electrode preparation using the brushing method, this paper introduces a method for the electrodeposition for RuO2/Ti and RuO2-IrO2/Ti preparation and NaCl solution electrolysis. The deposition of Ir improves the uniformity and stability of the RuO2/Ti electrode. The optimum preparation conditions and additive concentrations were investigated in detail through the orthogonal experiment. By adjusting the electroplating time, temperature and voltage, the electrode with a high content of available chlorine was synthesized successfully. The physicochemical properties of the as-prepared RuO2/Ti and RuO2-IrO2/Ti were determined by XRD, SEM-EDS, and XPS, and the electrochemical performance and lifetime of the RuO2/Ti and RuO2-IrO2/Ti was verified via an electrochemical workstation. Uniform and stable RuO2/TiO2 and RuO2-IrO2/TiO2 were synthesized successfully for the electrolysis of the NaCl solution.