Single Ru Atoms Stabilized by Hybrid Amorphous/Crystalline FeCoNi Layered Double Hydroxide for Ultraefficient Oxygen Evolution

Journal Article · Wed Nov 11 23:00:00 EST 2020 · Advanced Energy Materials

DOI:https://doi.org/10.1002/aenm.202002816· OSTI ID:1785563

Hu, Yidong ^[1]; Luo, Gan ^[2]; Wang, Liguang ^[3]; Liu, Xiaokang ^[4]; Qu, Yunteng ^[5]; Zhou, Yansong ^[6]; Zhou, Fangyao ^[5]; Li, Zhijun ^[7]; Li, Yafei ^[2]; Yao, Tao ^[4]; Xiong, Can ^[5]; Yang, Bo ^[8]; Yu, Zhenqiang ^[8]; Wu, Yuen ^[9]

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1. School of Chemistry and Materials Science Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 P. R. China, School of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 P. R. China
2. Jiangsu Key Laboratory of New Power Batteries Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials School of Chemistry and Materials Science Nanjing Normal University Nanjing 210023 P. R. China
3. X‐Ray Science Division Argonne National Laboratory 9700 S. Cass Avenue Lemont IL 60439 USA
4. National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 P. R. China
5. School of Chemistry and Materials Science Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 P. R. China
6. Faculty of Science Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
7. Provincial Key Laboratory of Oil and Gas Chemical Technology College of Chemistry and Chemical Engineering Northeast Petroleum University Daqing 163318 P. R. China
8. School of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 P. R. China
9. School of Chemistry and Materials Science Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 P. R. China, Dalian National Laboratory for Clean Energy University of Science and Technology of China Dalian 116023 P. R. China

Abstract

In view of the sluggish kinetics suppressing the oxygen evolution reaction (OER), developing efficient and robust OER catalysts is urgent and essential for developing efficient energy conversion technologies. Herein, hybrid amorphous/crystalline FeCoNi layered double hydroxide (LDH)‐supported single Ru atoms (Ru SAs/AC‐FeCoNi) are developed for enabling a highly efficient electrocatalytic OER. The amorphous outer layer in Ru SAs/AC‐FeCoNi is composed of abundant defect sites and unsaturated coordination sites, which can serve as anchoring sites to stabilize single Ru atoms. The crystalline inner has a highly symmetric rigid structure, thereby strengthening the stability of support for a long‐lasting OER. The synergistic effects endow this hybrid catalyst with extremely low overpotential (205 mV at 10 mA cm ⁻² ). Density functional theory calculation indicates that single Ru atoms stabilized by hybrid amorphous/crystalline FeCoNi LDH facilitate the formation of Ru–O* (rate‐determining step), thus accelerating the OER process.

• Sponsoring Organization: USDOE
• Grant/Contract Number: NONE; AC02-06CH11357
• OSTI ID: 1785563
• Journal Information: Advanced Energy Materials, Journal Name: Advanced Energy Materials Journal Issue: 1 Vol. 11; ISSN 1614-6832
• Publisher: Wiley Blackwell (John Wiley & Sons)
• Country of Publication: Germany
• Language: English