文献类型：期刊文献

英文题名：1D@2D Hierarchical NiCo2O4@MIL-53(Fe) Nanostructures Synergistically Enhance Oxygen Evolution Reaction

作者：Wang, Zeng Guo[1];Li, Xiaoxia[2];Ding, Zijie[2];Mao, Fangxin[1];Wu, Jia Chen[1];Liu, Peng Fei[1,3];Yang, Hua Gui[1,3]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China;[2]China Gen Nucl New Energy Holdings Co Ltd, Beijing 100071, Peoples R China;[3]Minist Educ, Engn Res Ctr Resource Utilizat Carbon Containing W, Shanghai 200237, Peoples R China

年份：2024

卷号：38

期号：10

起止页码：9027

外文期刊名：ENERGY & FUELS

收录：;EI(收录号：20241916049532);WOS:【SCI-EXPANDED(收录号:WOS:001226236100001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (51920105003, 22239001, and 22379043), the Shanghai Pilot Program for Basic Research (22TQ1400100-12), the Science and Technology Commission of Shanghai Municipality (23520710700, 21DZ1207101, and 22ZR1416400), and the Fundamental Research Funds of the Central University (JKB01231715). The authors also thank the crew of the BL14W1 beamline at the Shanghai Synchrotron Radiation Facility (SSRF) for their constructive assistance with the XAFS measurements and data analyses.

语种：英文

外文关键词：Catalyst activity - Cobalt compounds - Electrocatalysis - Iron compounds - Nanostructures - Oxygen - Potassium hydroxide - Stability

摘要：Hierarchical nanostructures with unique synergistic electronic effects and abundant active sites play an essential role in the field of electrocatalysis. In this work, 1D@2D hierarchical NiCo2O4@MIL-53(Fe) nanostructures are constructed via introducing MIL-53(Fe) over NiCo2O4 nanoneedles grown on nickel foam [NiCo2O4@MIL-53(Fe)]. NiCo2O4@MIL-53(Fe) exhibits high catalytic activity of the oxygen evolution reaction due to the strong electronic interaction between NiCo2O4 and MIL-53(Fe), as well as the hierarchical nanostructures that provide numerous active sites. In 1.0 M KOH, the NiCo2O4@MIL-53(Fe) can achieve the current densities of 10 and 100 mA cm(-2) with overpotentials of only 231 and 260 mV, respectively; the hierarchical catalysts show good electrochemical and structural stability, operating for more than 100 h at a current density of 10 mA cm(-2) without obvious decay.