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Nano Research 2023, 16(1): 545-554 https://doi.org/10.1007/s12274-022-4972-4
Research Article | Issue | Published: 21 September 2022

Bead-like cobalt-nitrogen co-doped carbon nanocage/carbon nanofiber composite: A high-performance oxygen reduction electrocatalyst for zinc-air batteries

Show Author's Information Bo Zhang1,§,  Yige Zhao1,§,  Lu Li1,  Yukun Li1,  Jin Zhang2,  Guosheng Shao1,  Peng Zhang1( )
State Center for International Cooperation on Designer Low-carbon and Environmental Materials (CDLCEM), School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, China

§ Bo Zhang and Yige Zhao contributed equally to this work.

Keywords:
oxygen reduction reaction, carbon nanocages, bead-like structure, electrospinning technology, zinc−air battery
Topics:
Zinc air batteries
Cite this article:
Zhang B, Zhao Y, Li L, et al. Bead-like cobalt-nitrogen co-doped carbon nanocage/carbon nanofiber composite: A high-performance oxygen reduction electrocatalyst for zinc-air batteries. Nano Research, 2023, 16(1): 545-554. https://doi.org/10.1007/s12274-022-4972-4
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Abstract Full text Electronic supplementary material About this article

Proper regulation of metal-nitrogen carbon (M-N-C) materials derived from zeolitic imidazolate frameworks (ZIFs) is essential to enhance the oxygen reduction reaction (ORR) performance. However, most of the reports focus on the component regulation, and the structure regulation of ZIFs-derived M-N-C materials by a simple preparation method has been barely reported. Herein, using a one-step electrospinning method with subsequent pyrolysis, we have prepared a bead-like cobalt-nitrogen co-doped carbon nanocage/carbon nanofiber (Co-N-C/CNF) composite electrocatalyst with the porous carbon nanocages arranged one by one in the highly conductive carbon nanofibers. Profiting from the fully exposed active sites and improved conductivity, the Co-N-C/CNF catalyst exhibits an excellent ORR performance even surpassing the commercial Pt/C catalyst. Density functional theory (DFT) results demonstrate that the CoNP-N1-C2 active sites on Co-N-C/CNF make the core contribution to the improvement of ORR properties. Moreover, the zinc-air battery (ZAB) based on the Co-N-C/CNF catalyst also shows outstanding discharge performance. This study provides a new strategy for the preparation and structural design for ZIFs-derived M-N-C materials as efficient ORR catalysts.


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About this article

Bead-like cobalt-nitrogen co-doped carbon nanocage/carbon nanofiber composite: A high-performance oxygen reduction electrocatalyst for zinc-air batteries

Show Author's information Bo Zhang1,§, Yige Zhao1,§, Lu Li1, Yukun Li1, Jin Zhang2, Guosheng Shao1, Peng Zhang1( )
State Center for International Cooperation on Designer Low-carbon and Environmental Materials (CDLCEM), School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, China

§ Bo Zhang and Yige Zhao contributed equally to this work.

Abstract

Proper regulation of metal-nitrogen carbon (M-N-C) materials derived from zeolitic imidazolate frameworks (ZIFs) is essential to enhance the oxygen reduction reaction (ORR) performance. However, most of the reports focus on the component regulation, and the structure regulation of ZIFs-derived M-N-C materials by a simple preparation method has been barely reported. Herein, using a one-step electrospinning method with subsequent pyrolysis, we have prepared a bead-like cobalt-nitrogen co-doped carbon nanocage/carbon nanofiber (Co-N-C/CNF) composite electrocatalyst with the porous carbon nanocages arranged one by one in the highly conductive carbon nanofibers. Profiting from the fully exposed active sites and improved conductivity, the Co-N-C/CNF catalyst exhibits an excellent ORR performance even surpassing the commercial Pt/C catalyst. Density functional theory (DFT) results demonstrate that the CoNP-N1-C2 active sites on Co-N-C/CNF make the core contribution to the improvement of ORR properties. Moreover, the zinc-air battery (ZAB) based on the Co-N-C/CNF catalyst also shows outstanding discharge performance. This study provides a new strategy for the preparation and structural design for ZIFs-derived M-N-C materials as efficient ORR catalysts.

Keywords: oxygen reduction reaction, carbon nanocages, bead-like structure, electrospinning technology, zinc−air battery

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Publication history
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Acknowledgements

Publication history

Received: 07 July 2022
Revised: 26 August 2022
Accepted: 27 August 2022
Published: 21 September 2022
Issue date: January 2023

Copyright

© Tsinghua University Press 2022

Acknowledgements

Acknowledgements

The work was supported by the National Natural Science Foundation of China (Nos. 52104314, 51972287, U2004172, and 51502269), Natural Science Foundation of Henan Province (No. 202300410368), the Special Project of Key Research Development and Promotion of Henan Province (No. 222102240084), Sponsored by Program for Science＆Technology Innovation Talents in Universities of Henan Province (23HASTIT001) and the Foundation for University Key Teachers of Henan Province (No. 2020GGJS009).

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