Heterostructured Bimetallic MOF‐on‐MOF Architectures for Efficient Oxygen Evolution Reaction

Author:

Jiang Yuanjuan1,Chen Tsung‐Yi2,Chen Jeng‐Lung2,Liu Ying3,Yuan Xiaolu4,Yan Jicong4,Sun Qi5,Xu Zichen1,Zhang Daliang3,Wang Xiang4,Meng Changgong16,Guo Xinwen4,Ren Limin1ORCID,Liu Lingmei3,Lin Ryan Yeh‐Yung1

Affiliation:

1. State Key Laboratory of Fine Chemicals School of Chemistry Dalian University of Technology Dalian 116024 China

2. National Synchrotron Radiation Research Center Hsinchu 300092 Taiwan

3. Multi‐Scale Porous Materials Center Institute of Advanced Interdisciplinary Studies & School of Chemistry and Chemical Engineering Chongqing University Chongqing 400044 China

4. State Key Laboratory of Fine Chemicals Frontiers Science Center for Smart Materials School of Chemical Engineering Dalian University of Technology Dalian 116024 China

5. Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological Engineering Zhejiang University Hangzhou 310058 China

6. College of Environmental and Chemical Engineering Dalian University Dalian 116622 China

Abstract

AbstractElectron modulation presents a captivating approach to fabricate efficient electrocatalysts for the oxygen evolution reaction (OER), yet it remains a challenging undertaking. In this study, an effective strategy is proposed to regulate the electronic structure of metal–organic frameworks (MOFs) by the construction of MOF‐on‐MOF heterogeneous architectures. As a representative heterogeneous architectures, MOF‐74 on MOF‐274 hybrids are in situ prepared on 3D metal substrates (NiFe alloy foam (NFF)) via a two‐step self‐assembly method, resulting in MOF‐(74 + 274)@NFF. Through a combination of spectroscopic and theory calculation, the successful modulation of the electronic property of MOF‐(74 + 274)@NFF is unveiled. This modulation arises from the phase conjugation of the two MOFs and the synergistic effect of the multimetallic centers (Ni and Fe). Consequently, MOF‐(74 + 274)@NFF exhibits excellent OER activity, displaying ultralow overpotentials of 198 and 223 mV at a current density of 10 mA cm−2 in the 1.0 and 0.1 M KOH solutions, respectively. This work paves the way for manipulating the electronic structure of electrocatalysts to enhance their catalytic activity.

Funder

National Natural Science Foundation of China

Ministry of Science and Technology, Taiwan

Liaoning Revitalization Talents Program

Natural Science Foundation of Chongqing Municipality

Publisher

Wiley

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

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