Energy-saving synthesis of potassium iodatevia electrolysis of potassium iodine and O 2 in a membraneless cell

An electrochemical process for producing potassium iodate based on oxidation of KI coupled with oxygen reduction reaction in a newly designed cell is reported. By using an Ag-modified oxygen reduction cathode, the proposed cell needed no ion exchange membrane, and the current efficiency for KIO3 was confirmed to be over 96%, the corresponding cell voltage was only 0.7–0.8 V.