Journal of Materials Science

, Volume 54, Issue 23, pp 14495–14503 | Cite as

N,O-codoped 3D graphene fibers with densely arranged sharp edges as highly efficient electrocatalyst for oxygen reduction reaction

  • Jie Zeng
  • Yongbiao Mu
  • Xixi Ji
  • Zijia Lin
  • Yanhong Lin
  • Yihui Ma
  • Zhongxing Zhang
  • Shuguang Wang
  • Zhonghua Ren
  • Jie YuEmail author
Energy materials


To replace the noble-metal Pt catalysts for oxygen reduction reaction (ORR), developing efficient and earth-abundant electrocatalysts is of great importance. Both the morphology and composition engineering of graphene could effectively modify the electronic structure to optimize its electrocatalytic performance for ORR. Here, we report an effective method to dope carbon materials with N, by which the N doping concentration and form could be well controlled. We first grow 3D graphene fibers (3DGFs) by thermal chemical vapor deposition, which are then treated with acid or heated in air and heated in NH3 in succession, obtaining N,O-codoped 3DGFs. The codoped 3DGFs exhibit outstanding electrocatalytic performance toward ORR with onset potential of 1.01 V, half-wave potential of 0.883 V, long-term operation stability with 90% current retention after 50 h, and a good methanol tolerance in alkaline solutions, which are superior to 20 wt% Pt/C catalyst and other reported advanced metal-free catalysts. The excellent catalytic performance of the 3DGFs probably arises from the synergic effect of the morphology and composition engineering, e.g., the edges and doping, especially the pyridine N. The present work is expected to open up new approach to design outstanding metal-free carbon-based electrocatalysts for ORR.



All authors acknowledge supports from Shenzhen Basic Research Program (JCYJ20160318093244885 and JCYJ20170413112249615) and the National Natural Science Foundation of China (No. 51272057).

Supplementary material

10853_2019_3743_MOESM1_ESM.docx (3.2 mb)
Supplementary material 1 (DOCX 3227 kb)


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Shenzhen Engineering Lab for Supercapacitor Materials, Shenzhen Key Laboratory for Advanced Materials, Department of Material Science and Engineering, Shenzhen Graduate SchoolHarbin Institute of Technology, University Town ShenzhenChina

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