文献类型：期刊文献

英文题名：Construction of Ultrafine PtIr Clusters Supported on Co3O4 Nanoflowers for Enhanced Overall Water Splitting

作者：Zhang, Longtao[1,2];Zhang, Mingliang[1,2];Zhang, Yu[1,2];Zhuo, Wei[1,2];Chen, Tong[1,2];Fang, Yilin[1,2];Hong, Jiaxiang[1,2];Wei, Hehe[1,2];Gong, Xue-Qing[1,2,3]

机构：[1]East China Univ Sci & Technol, Ctr Computat Chem, State Key Lab Green Chem Engn & Ind Catalysis, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

年份：2024

卷号：30

期号：31

外文期刊名：CHEMISTRY-A EUROPEAN JOURNAL

收录：;EI(收录号：20241916036914);WOS:【SCI-EXPANDED(收录号:WOS:001214326900001)】；

基金：This work was supported by National Key R&D Program of China (2021YFA1500700), National Natural Science Foundation of China (22203030, 22102057, 21825301, 92045303) and Shanghai Sailing Program (21YF1409400). The authors thank Research Center of Analysis and Test of East China University of Science and Technology and Feringa Nobel Prize Scientist Joint Research Center for the characterizations.

语种：英文

外文关键词：OER; HER; PtIr clusters; Co3O4; electrocatalysis

摘要：Green hydrogen production through electrochemical overall water splitting has suffered from sluggish oxygen evolution reaction (OER) kinetics, inferior conversion efficiency, and high cost. Herein, ultrafine PtIr clusters are synthesized via an electrodeposition method and decorated on the Co3O4 nanoflowers assembled by nanowires (PtIr-Co3O4). The encouraging performances in electrochemical OER and hydrogen evolution reaction (HER) are achieved over the PtIr-Co3O4 catalyst, with the overpotentials as low as 410 and 237 mV at 100 mA cm(-2), respectively, outperforming the commercial IrO2 and Pt/C catalysts. Due to the ultralow loading of PtIr clusters, the PtIr-Co3O4 catalyst exhibits 1270 A g(Ir)(-1) for OER at the overpotential of 400 mV. Our detailed analyses also show that the strong interactions between the ultrafine PtIr clusters and the Co3O4 nanoflowers enable the PtIr-Co3O4 catalyst to afford 10 mA cm(-2) for the overall water splitting at the potential of 1.57 V, accompanied by high durability for 100 h.