Seawater electrolysis holds great promise for hydrogen production in the future,while the development of anodic catalysts has been severely hampered by the side-reaction,chloride evolution reaction.In this work,nano-f...Seawater electrolysis holds great promise for hydrogen production in the future,while the development of anodic catalysts has been severely hampered by the side-reaction,chloride evolution reaction.In this work,nano-flower-cluster structured Coo@FeSe_(2)/CF catalysts are synthesized via a scalable electrodeposition technique,and the performance is systematically studied.The oxygen evolution reaction(OER)overpotential of Co0@FeSe_(2)/CF is 267 mV at 100 mA.cm^(-2),which is significantly lower than that of the IrO_(2) catalyst(435 mV).Additionally,the catalyst shows high selectivity for OER(97.9%)and almost no loss of activity after a durability test for 1100 h.The impressive performance is attributed to the dense rod-like structure with abundant active centers after electrochemical activation and the in-situ generated CoOOH and FeOOH that improve the catalytic activity of the catalyst.The synergistic effect induced bythenon-uniform structureendows the catalyst with excellent stability.展开更多
基金supported by the Hainan Provincial Natural Science Foundation(222RC548,222RC554)the National Natural Science Foundation of China(22109034,22109035,52164028,62105083)+1 种基金the specific research fund of the Innovation Platform for Academicians of Hainan Province,the Start-up Research Foundation of Hainan University(KYQD(ZR)-20008,20082,20083,20084,21065,21124,21125)the Innovative Research Projects for Graduate Students of Hainan Province(Qhyb2022-86).
文摘Seawater electrolysis holds great promise for hydrogen production in the future,while the development of anodic catalysts has been severely hampered by the side-reaction,chloride evolution reaction.In this work,nano-flower-cluster structured Coo@FeSe_(2)/CF catalysts are synthesized via a scalable electrodeposition technique,and the performance is systematically studied.The oxygen evolution reaction(OER)overpotential of Co0@FeSe_(2)/CF is 267 mV at 100 mA.cm^(-2),which is significantly lower than that of the IrO_(2) catalyst(435 mV).Additionally,the catalyst shows high selectivity for OER(97.9%)and almost no loss of activity after a durability test for 1100 h.The impressive performance is attributed to the dense rod-like structure with abundant active centers after electrochemical activation and the in-situ generated CoOOH and FeOOH that improve the catalytic activity of the catalyst.The synergistic effect induced bythenon-uniform structureendows the catalyst with excellent stability.
