![]() ![]() Impressively, the flow cell equipped with Ru-O 4 SAM electrode displays excellent stability and Cl 2 selectivity over 1000 h continuous electrocatalysis at a high current density of 1000 mA cm −2. As a result, the as-prepared single-atom catalyst with Ru-O 4 moiety (Ru-O 4 SAM) exhibits an overpotential of only ~30 mV to achieve a current density of 10 mA cm −2 in an acidic medium (pH = 1) containing 1 M NaCl. Herein, we report a highly active oxygen-coordinated ruthenium single-atom catalyst for the electrosynthesis of chlorine in seawater-like solutions. However, the large overpotential and low selectivity of current chlorine evolution reaction (CER) electrocatalysts result in significant energy consumption during chlorine production. The chlor-alkali process plays an essential and irreplaceable role in the modern chemical industry due to the wide-ranging applications of chlorine gas. ![]()
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