Boosting Oxygen Reduction Catalysis with Fe-N 4 Sites Decorated Porous Carbons toward Fuel Cells

  • Zhengkun Yang
  • , Yu Wang
  • , Mengzhao Zhu
  • , Zhijun Li
  • , Wenxing Chen
  • , Weichen Wei
  • , Tongwei Yuan
  • , Yunteng Qu
  • , Qian Xu
  • , Changming Zhao
  • , Xin Wang
  • , Peng Li
  • , Yafei Li*
  • , Yuen Wu
  • , Yadong Li
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

356 Citations (Scopus)

Abstract

It is highly desired but remains a great challenge to develop nonprecious metal single-atom catalysts to supersede the Pt-based material for oxygen reduction reaction (ORR). Herein, we report a porous nitrogen-doped carbon matrix catalyst with 3.5 wt % single Fe atoms (Fe SAs/N-C) through a versatile molecules-confined pyrolysis strategy. In 0.1 M KOH condition, the Fe SAs/N-C catalyst possesses a half-wave potential of 0.91 V vs RHE. In a more challenging acidic solution, Fe SAs/N-C catalyst also offers good ORR activity, comparable with the commercial Pt/C. Impressively, Fe SAs/N-C shows extremely high stability both in alkaline and acidic media. In addition, this Fe SAs/N-C-derived Zn-air battery and proton exchange membrane fuel cells (PEMFCs) exhibit high performance. This work opens an avenue for designing and preparing single-atom catalysts.

Original languageEnglish
Pages (from-to)2158-2163
Number of pages6
JournalACS Catalysis
Volume9
Issue number3
DOIs
Publication statusPublished - 1 Mar 2019

Keywords

  • Zn-air battery
  • electrocatalysis
  • fuel cells
  • oxygen reduction reaction
  • porous carbons
  • single-atom Fe

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