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Nano Research 2023, 16(5): 8012-8017 https://doi.org/10.1007/s12274-023-5389-4
Research Article | Issue | Published: 10 January 2023

A 3D hierarchical electrocatalyst: Core–shell Cu@Cu(OH)2 nanorods/MOF octahedra supported on N-doped carbon for oxygen evolution reaction

Show Author's Information Xinran Li1,2,  Yipei Li2,  Changli Wang1,  Huaiguo Xue1,  Huan Pang1( ),  Qiang Xu1,2( )
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China
Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials (SKLPM), SUSTech-Kyoto University Advanced Energy Materials Joint Innovation Laboratory (SKAEM-JIL), Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of Guangdong, Department of Chemistry, Department of Materials Science and Engineering and SUSTech Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
Keywords:
oxygen evolution reaction, metal–organic framework, Cu@Cu(OH)2, core–shell nanorod
Topics:
Structural design
Cite this article:
Li X, Li Y, Wang C, et al. A 3D hierarchical electrocatalyst: Core–shell Cu@Cu(OH)2 nanorods/MOF octahedra supported on N-doped carbon for oxygen evolution reaction. Nano Research, 2023, 16(5): 8012-8017. https://doi.org/10.1007/s12274-023-5389-4
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Abstract Full text Electronic supplementary material About this article

Cu-based materials are seldom reported as oxygen evolution reaction (OER) electrocatalysts due to their inherent electron orbital configuration, which makes them difficult to adsorb oxygen-intermediates during OER. Reasonably engineering the hierarchical architectures and the electronic structures can improve the performance of Cu-based OER catalysts, such as constructing multilevel morphology, inducing the porous materials, improving the Cu valence, building heterostructures, doping heteroatoms, etc. In this work, copper-1,3,5-benzenetricarboxylate (HKUST-1) octahedra in-situ grow on the Cu nanorod (NR)-supported N-doped carbon microplates, meanwhile an active layer of Cu(OH)2 forms on the surface of the original conductive Cu NRs. The octahedral HKUST-1, serving as a spacer between the microplates, greatly improves the porosity and increases the available active sites, facilitating the mass transport and electron transfer, thus resulting in greatly enhanced OER performance.


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Electronic supplementary material
About this article

A 3D hierarchical electrocatalyst: Core–shell Cu@Cu(OH)2 nanorods/MOF octahedra supported on N-doped carbon for oxygen evolution reaction

Show Author's information Xinran Li1,2, Yipei Li2, Changli Wang1, Huaiguo Xue1, Huan Pang1( ), Qiang Xu1,2( )
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China
Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials (SKLPM), SUSTech-Kyoto University Advanced Energy Materials Joint Innovation Laboratory (SKAEM-JIL), Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of Guangdong, Department of Chemistry, Department of Materials Science and Engineering and SUSTech Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China

Abstract

Cu-based materials are seldom reported as oxygen evolution reaction (OER) electrocatalysts due to their inherent electron orbital configuration, which makes them difficult to adsorb oxygen-intermediates during OER. Reasonably engineering the hierarchical architectures and the electronic structures can improve the performance of Cu-based OER catalysts, such as constructing multilevel morphology, inducing the porous materials, improving the Cu valence, building heterostructures, doping heteroatoms, etc. In this work, copper-1,3,5-benzenetricarboxylate (HKUST-1) octahedra in-situ grow on the Cu nanorod (NR)-supported N-doped carbon microplates, meanwhile an active layer of Cu(OH)2 forms on the surface of the original conductive Cu NRs. The octahedral HKUST-1, serving as a spacer between the microplates, greatly improves the porosity and increases the available active sites, facilitating the mass transport and electron transfer, thus resulting in greatly enhanced OER performance.

Keywords: oxygen evolution reaction, metal–organic framework, Cu@Cu(OH)2, core–shell nanorod

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Publication history
Copyright
Acknowledgements

Publication history

Received: 21 October 2022
Revised: 28 November 2022
Accepted: 03 December 2022
Published: 10 January 2023
Issue date: May 2023

Copyright

© Tsinghua University Press 2023

Acknowledgements

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. U1904215 and 21875207), the Natural Science Foundation of Jiangsu Province (No. BK20200044), and the Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials (SKLPM, No. ZDSYS20210709112802010).

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