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Atomically Dispersed Fe on Nanosheet-linked, Defect-rich, Highly N-Doped 3D Porous Carbon for Efficient Oxygen Reduction

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Chemical Research in Chinese Universities Aims and scope

Abstract

Exploring cost-effective and high-performance oxygen reduction reaction(ORR) electrocatalysts to replace precious platinum-based materials is crucial for developing electrochemical energy conversion devices but remains a great challenge. Herein, Fe single atoms anchored on nanosheet-linked, defect-rich, highly N-doped 3D porous carbon(Fe-SAs/NLPC) electrocatalysts were obtained by pyrolyzing salt-sealed Fe-doped zeolitic imidazolate frameworks(ZIFs). NaCl functions both as pore-forming agent and closed nanoreactor, which can not only lead to the formation of defects-rich three-dimensional interconnected structures with high N-doping content to expose abundant active sites, promote mass transfer and electron transfer, but also facilitate the effective incorporation of Fe to form Fe-Nx active sites without aggregation. These unique characteristics render Fe-SAs/NLPC outstanding electrocatalytic activity for ORR, with one-set potential of 0.96 V and high kinetic current density(jK) of 33.32 mA/cm2 in alkaline medium, which surpass the values of most nonprecious-metal catalysts and even commercial Pt/C.

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Authors and Affiliations

  1. State Key Laboratory of Chemo/Bio-sensing and Chemometrics, Provincial Hunan Key Laboratory for Graphene Materials and Devices, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China

    Yuqing Wang, Li Tao, Ru Chen, Hao Li, Nana Zhang & Shuangyin Wang

  2. USA National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230029, P. R. China

    Hui Su & Qinghua Liu

Authors
  1. Yuqing Wang
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  2. Li Tao
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  3. Ru Chen
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  4. Hao Li
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  5. Hui Su
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  6. Nana Zhang
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  7. Qinghua Liu
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  8. Shuangyin Wang
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Corresponding authors

Correspondence to Ru Chen or Shuangyin Wang.

Additional information

Supported by the National Natural Science Foundation of China(Nos.21701043, 21573066, 21825201), the Provincial Natural Science Foundation of Hunan, China(Nos.2016JJ1006, 2016TP1009), the Hunan Provincial Innovation Foundation for Postgraduate, China(No.CX2018B182) and the Open Project Program of Key Laboratory of Low Dimensional Materials & Application Technology(Xiangtan University), Ministry of Education, China(No.KF20180202).

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40242_2020_101_MOESM1_ESM.pdf

Atomically Dispersed Fe on Nanosheet-linked, Defect-rich, Highly N-doped 3D Porous Carbon for Efficient Oxygen Reduction

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Wang, Y., Tao, L., Chen, R. et al. Atomically Dispersed Fe on Nanosheet-linked, Defect-rich, Highly N-Doped 3D Porous Carbon for Efficient Oxygen Reduction. Chem. Res. Chin. Univ. 36, 453–458 (2020). https://doi.org/10.1007/s40242-020-0101-7

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  • DOI: https://doi.org/10.1007/s40242-020-0101-7

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