文献类型：期刊文献

英文题名：Enhanced OER performance of composite Co-Fe-based MOF catalysts via a one-pot ultrasonic-assisted synthetic approach

作者：Li, Fen[1];Li, Jinxia[1];Zhou, Lihui[1];Dai, Sheng[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Shanghai 200237, Peoples R China

年份：2021

卷号：5

期号：4

起止页码：1095

外文期刊名：SUSTAINABLE ENERGY & FUELS

收录：;EI(收录号：20210909991793);WOS:【SCI-EXPANDED(收录号:WOS:000620730300018)】；

基金：This work is sponsored by the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, Shanghai Rising-star Program (20QA1402400), and the Fundamental Research Funds for the Central Universities (JKVJ12001022). Additional support was provided by the Feringa Nobel Prize Scientist Joint Research Center.

语种：英文

外文关键词：Metal-Organic Frameworks - Iron compounds

摘要：Metal-organic frameworks (MOFs) have recently emerged as one of the most promising electrocatalysts for oxygen evolution reaction (OER) due to their abundant metal sites and porous structures. However, the limited modulation of the single-metal sites of MOF-based catalysts restricts further promotion of their catalytic performance. In this work, we have developed a composite Co-Fe-based MOF catalyst based on Co-BDC (1,4-benzenedicarboxylate) and Fe-BDC, which modulated the electronic structure via the construction of the heterogeneous interfaces of Co-BDC and Fe-BDC. Enhanced OER performance was achieved in the composite Co-Fe-BDC catalyst, far more exceeding that of the counterpart Co-BDC or Fe-BDC. In addition, it was found that additional ultrasonic treatment effectively facilitated the dispersion of Fe-BDC on Co-BDC, as compared to the composited MOF obtained via physical mixture or magnetic stirring. The composite Co-Fe-BDC catalyst prepared via the ultrasonic-assisted one-pot synthesis exhibited an overpotential of 295 mV at a current density of 10 mA cm(-2), which was even superior to that of the commercial RuO2 catalyst, while holding a lower cost and excellent stability. Insights gained in this study may shed new lights on heterogeneous interfaces and composition strategy of MOF-based electrochemical catalysts.