Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/155673
Title: SmCo₅ with a reconstructed oxyhydroxide surface for spin-selective water oxidation at elevated temperature
Authors: Chen, Riccardo Ruixi
Chen, Gao
Ren, Xiao
Ge, Jingjie
Ong, Samuel Jun Hoong
Xi, Shibo
Wang, Xin
Xu, Jason Zhichuan
Keywords: Engineering::Materials
Issue Date: 2021
Source: Chen, R. R., Chen, G., Ren, X., Ge, J., Ong, S. J. H., Xi, S., Wang, X. & Xu, J. Z. (2021). SmCo₅ with a reconstructed oxyhydroxide surface for spin-selective water oxidation at elevated temperature. Angewandte Chemie International Edition, 60(49), 25884-25890. https://dx.doi.org/10.1002/anie.202109065
Project: MOE2018-T2-2-027 
Journal: Angewandte Chemie International Edition 
Abstract: The efficiency of electrolytic hydrogen production is limited by the slow reaction kinetics of oxygen evolution reaction (OER). Surface-reconstructed ferromagnetic (FM) catalysts with a spin-pinning effect at the FM/oxyhydroxide interface could enhance the spin-dependent OER kinetics. However, in real-life applications, electrolyzers are operated at elevated temperature, which may disrupt the spin orientations of FM catalysts and limit their performance. In this study, we prepared surface-reconstructed SmCo5 /CoOx Hy , which possesses polarized spins at the FM/oxyhydroxide interface that lead to excellent OER activity. These interfacial polarized spins could be further aligned through a magnetization process, which further enhanced the OER performance. Moreover, the operation temperature was elevated to mimic the practical operation conditions of water electrolyzers. It was found that the OER activity enhancement of the magnetized SmCo5 /CoOx Hy catalyst could be preserved up to 60 °C.
URI: https://hdl.handle.net/10356/155673
ISSN: 1433-7851
DOI: 10.1002/anie.202109065
Rights: This is the peer reviewed version of the following article: Chen, R. R., Chen, G., Ren, X., Ge, J., Ong, S. J. H., Xi, S., Wang, X. & Xu, J. Z. (2021). SmCo₅ with a reconstructed oxyhydroxide surface for spin-selective water oxidation at elevated temperature. Angewandte Chemie International Edition, 60(49), 25884-25890, which has been published in final form at https://doi.org/10.1002/anie.202109065. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: embargo_20221208
Fulltext Availability: With Fulltext
Appears in Collections:ERI@N Journal Articles
IGS Journal Articles
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