Volume 21, Issue 3 2408897
Research Article

Interface Engineering for Improved Large-Current Oxygen Evolution via Partial Phosphorization of Ce-MOF/NiCo-MOF Heterostructure

Dan Liu

Dan Liu

State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444 China

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Xuewen Xia

Xuewen Xia

State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444 China

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Xueqiang Zhang

Xueqiang Zhang

State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444 China

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Fei Wang

Fei Wang

State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444 China

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Li Tao

Li Tao

State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444 China

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Ya Gao

Ya Gao

State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444 China

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Shujuan Wang

Shujuan Wang

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800 China

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Zhongya Pang

Zhongya Pang

State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444 China

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Xing Yu

Corresponding Author

Xing Yu

State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444 China

E-mail: [email protected]; [email protected]; [email protected]

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Guangshi Li

Guangshi Li

State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444 China

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Hsien-Yi Hsu

Hsien-Yi Hsu

Department of Materials Science and Engineering, School of Energy and Environment, City University of Hong Kong, Hong Kong, 999077 China

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Shen Hu

Shen Hu

State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433 China

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Li Ji

Corresponding Author

Li Ji

State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433 China

E-mail: [email protected]; [email protected]; [email protected]

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Xionggang Lu

Xionggang Lu

State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444 China

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Xingli Zou

Corresponding Author

Xingli Zou

State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444 China

E-mail: [email protected]; [email protected]; [email protected]

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First published: 22 November 2024
Citations: 1

Abstract

Interface engineering for electrocatalysts has proven to be an effective method for modulating electrocatalytic properties, yet a more efficient and straightforward strategy to construct a valid heterointerface for further enhancing interface effects is urgently needed for boosting oxygen evolution reactions (OER) at large current. Herein, a closely compacted heterostructure combining NiCo-metal-organic framework (MOF) and Ce-MOF is in situ formed through a one-step hydrothermal treatment, and partial phosphorization is employed to further enhance the interface effect between the newly formed urchin-shaped NiCoP shells and hexagonal rod-like Ce-MOF cores on nickel foam (NiCoP/Ce-MOF@NF). Experimental and theoretical results indicate that the heterogeneous NiCoP/Ce-MOF@NF, characterized by a more intensive interface rather than a simple physical mixture, generates an OER-beneficial electronic structure, significantly facilitates charge transfer and reaction kinetics, and creates a synergistically stable structure. The optimal NiCoP/Ce-MOF@NF exhibits remarkable electrocatalytic activity for OER, achieving an ultralow overpotential of 268 mV at a current density of 500 mA cm−2, and also delivers satisfactory large-current stability of up to 120 h. This work offers a novel approach for designing heterogeneous catalysts with strong interface effects for potential applications in industrial water electrolysis.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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