Volume 21, Issue 24 2412068
Research Article

Boosting Oxygen Electrocatalysis in CoN-CoSe2 Heterogeneous Hollow Nanocages with Engineered Build-In Electric Field for Zn–Air Batteries

Tiantian Tang

Tiantian Tang

Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry and Chemical Engineering, College of Physics and Electric Engineering, Harbin Normal University, Harbin, Heilongjiang, 150025 China

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Hanwen He

Hanwen He

Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry and Chemical Engineering, College of Physics and Electric Engineering, Harbin Normal University, Harbin, Heilongjiang, 150025 China

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Yukun Liu

Yukun Liu

Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry and Chemical Engineering, College of Physics and Electric Engineering, Harbin Normal University, Harbin, Heilongjiang, 150025 China

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Hongrui Yang

Hongrui Yang

Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry and Chemical Engineering, College of Physics and Electric Engineering, Harbin Normal University, Harbin, Heilongjiang, 150025 China

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Jiabei Yu

Jiabei Yu

Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry and Chemical Engineering, College of Physics and Electric Engineering, Harbin Normal University, Harbin, Heilongjiang, 150025 China

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Xinshuang Lin

Xinshuang Lin

Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry and Chemical Engineering, College of Physics and Electric Engineering, Harbin Normal University, Harbin, Heilongjiang, 150025 China

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Yang Song

Yang Song

Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry and Chemical Engineering, College of Physics and Electric Engineering, Harbin Normal University, Harbin, Heilongjiang, 150025 China

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Sen Zhang

Corresponding Author

Sen Zhang

College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang, 150001 China

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

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Chao Deng

Corresponding Author

Chao Deng

Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry and Chemical Engineering, College of Physics and Electric Engineering, Harbin Normal University, Harbin, Heilongjiang, 150025 China

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

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First published: 25 April 2025

Abstract

The exploration of oxygen catalyst with superior behaviors in a wide temperature range is a key issue for Zn–air battery. Herein, the CoN-CoSe2@C hollow cages with a built-in electric field (BIEF) on heterointerface are explored as the oxygen electrocatalyst for Zn–air battery (ZAB). Based on the theoretical analysis, the large work function difference (∆WF) of CoN-CoSe2 heterostructure propels the interfacial electron redistribution, which results in the strong BIEF and facilitates high catalytic activities. In addition, the CoN-CoSe2 nanocrystals are embedded in the hollow carbon nanocage to fully realize its performance. The central hollow structure of the carbon based nanocages provides the facile electron/ion/mass pathways and endows fast kinetics. Taking the advantages of both the strong BIEF and the well-designed substrate, the CoN-CoSe2@C hollow cages achieve the superior bifunctional electrocatalytic behaviors and good cycling performance even down to low-temperature such as −30 °C. Moreover, the full ZAB with CoN-CoSe2@C hollow cage cathode shows the superior performance and high reliability in diverse working conditions. Therefore, it is a promising power source candidate for the electronics in practical applications.

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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