| METALS AND METAL MATRIX COMPOSITES |
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| Co-N-C Nanosheet Anchored on N-doped Carbon Nanofiber for Oxygen Reduction Reaction |
| DONG Mengjiao1, XU Yangyang1,*, LI Jingshan1, YE Yipeng1, LI Bingxin2, CHEN Haotian2
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1 Research Institute of Textile and Clothing Industries, Zhongyuan University of Technology, Zhengzhou 451100, China
2 College of International Education, Zhongyuan University of Technology, Zhengzhou 451100, China |
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Abstract The exploitation of low cost and high performance non-precious metal catalyst is of great significance to promote the development of fuel cells. In this work, Co(OH)2 nanosheets anchored on nanofiber were prepared by electrospinning technology and solvothermal reaction method, and the Co(OH)2 nanosheets as the hard template was converted to ZIF-67 nanosheets. Then, Co-N-C nanosheets (Co-NS) anchored on the nitrogen-doped carbon nanofibers (NCNF) were obtained by high temperature heat treatment method, which were non-precious metal catalysts for ORR. Based on the advantages of highly conductive NCNF, abundant Co-N-C active species and nanosheet array structure, NCNF/Co-NS has excellent ORR dynamics. Test results show that NCNF/Co-NS catalysts in 0.1 mol/L KOH solution, are comparable to Pt/C (0.92 V vs.RHE, 0.85 V vs.RHE) in terms of the initial potential, half-wave potential (0.9 V vs.RHE, 0.83 V vs.RHE). Moreover, the electrochemical stability and methanol resistance of NCNF/Co-NS are much higher than Pt/C. In summary, NCNF/Co-NS has a broad application prospect in the field of energy.
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Published:
Online: 2025-05-29
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2025, Vol. 39 
