文献类型：期刊文献

英文题名：Highly dispersed secondary building unit-stabilized binary metal center on a hierarchical porous carbon matrix for enhanced oxygen evolution reaction

作者：Meng, Lu[1];Zhang, Ling[1];Zhu, Yihua[1];Jiang, Hongliang[2];Kaneti, Yusuf Valentino[3,4];Na, Jongbeom[3,4,5,6];Yamauchi, Yusuke[3,4,5,6];Golberg, Dmitri[7,8,9];Jiang, Hao[1];Li, Chunzhong[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Ultrafine Mat, Shanghai Engn Res Ctr Hierarch Nanomat, Minist Educ,Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[3]Natl Inst Mat Sci NIMS, JST ERATO Yamauchi Mat Space Tecton Project, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan;[4]Natl Inst Mat Sci NIMS, Int Ctr Mat Nanoarchitecton WPI MANA, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan;[5]Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia;[6]Univ Queensland, Australian Inst Bioengn & Nanotechnol AIBN, Brisbane, Qld 4072, Australia;[7]Queensland Univ Technol, Ctr Mat Sci, Brisbane, Qld 4000, Australia;[8]Queensland Univ Technol, Sch Chem & Phys, Brisbane, Qld 4000, Australia;[9]Natl Inst Mat Sci NIMS, Nanotubes Grp, Int Ctr Mat Nanoarchitecton WPI MANA, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

年份：2021

卷号：13

期号：2

起止页码：1213

外文期刊名：NANOSCALE

收录：;EI(收录号：20210509837681);WOS:【SCI-EXPANDED(收录号:WOS:000610368100064)】；

基金：This work was supported by the National Natural Science Foundation of China (21838003, 21676093, 21776092, 21808061, and 91834301), the Shanghai Scientific and Technological Innovation Project (18JC1410500), the Social Development Program of Shanghai (17DZ1200900), the Innovation Program of Shanghai Municipal Education Commission, and the Fundamental Research Funds for the Central Universities (222201718002). This work was performed in part at the Queensland node of the Australian National Fabrication Facility (ANFF), a company established under the National Collaborative Research Infrastructure Strategy to provide nano and microfabrication facilities for Australian researchers. D. G. is grateful to the Australian Research Council (ARC) for granting a Laureate Fellowship FL160100089.

语种：英文

外文关键词：Organometallics - Crystalline materials - Carbon - Energy conversion - Potassium hydroxide - Porous materials - Electronic structure - Electrocatalysts - Metals

摘要：Restricting the aggregation and rationally adjusting the electronic structure of binary metal centers in metal-organic framework (MOF) precursors are important for optimizing their performance as electrocatalysts for the oxygen evolution reaction (OER) and achieving low overpotential and high stability in such applications. Herein, we demonstrate the possibility of enhancing the electrochemical activity of MOF-derived binary metal center catalysts by controlling the form of the Fe species. The introduction of Fe-SBU (iron 2,5-dihydroxyterephthalic acid) into ZIF-67 is found to induce a distinct confinement effect and this can be exploited to improve the electroconductivity of binary metal center catalysts, and therefore, to reduce the OER reaction barrier (OOH* -> O*). When applied as an OER catalyst in 1 M KOH solution, the Fe-SBU@Co-Matrix catalyst exhibits a low overpotential of 249 mV to reach a current density of 10 mA cm(-2) and high stability for over 40 h. This work describes the secondary growth treatment of MOF-derived porous carbons to promote their application as catalysts in energy conversion reactions.