“…The current efficiency for chlorine evolution is significantly affected by electrochemical condition such as: salt concentration, electrolysis time, current density, electrode area, and reactor volume. As seen in Table , the current efficiency in this study showed about 39–50% and the previous studies reported the current efficiency for chlorine evolution reaction in dilute chloride solutions were about 8–45%, depending upon the experimental conditions (Table S1). Even though the current efficiency in this study was higher than literature values, it cannot be directly compared due to the difference of the experiment conditions or electrode materials. where CF is the current efficiency (%), V is the volume of electrolyte (L), C is the chlorine concentration in the solution (mol/L), n is the number of electron exchanged, F is the Faraday constant (96485 C/mol), I is the applied current (A), and t is the electrolysis time (s) …”