Alleviating the Work Function of Vein‐Like Co X P by Cr Doping for Enhanced Seawater Electrolysis

Abstract For mass production of hydrogen fuel by electrochemical water splitting, seawater is preferred because of its abundant reserves on Earth. However, the current seawater electrolysis technology is seriously hindered by the low selectivity and poor stability of oxygen evolution reaction (OER) at anode due to undesirable chloride electrochemistry and severe corrosion in practical application. Herein, based on the “work function optimization” concept, vein‐like Cr‐doping Co x P is rationally designed as a highly‐efficient OER electrocatalyst for direct seawater electrolysis, achieving current densities of 20 and 100 mA cm –2 at overpotentials of 268 and 325 mV, respectively, together with high OER…

• DO
  Department of Education of Shandong Province

  Award: 2019KJC023
• NN
  National Natural Science Foundation of China

  Awards: 22075159, 22209088, 21775142
• NS
  Natural Science Foundation of Shandong Province

  Award: ZR2020ZD10