articleAdvanced MaterialsSep 16, 2020GREEN OA

Coexisting Single‐Atomic Fe and Ni Sites on Hierarchically Ordered Porous Carbon as a Highly Efficient ORR Electrocatalyst

ZZZhengju ZhuHYHuajie YinYWYun WangCCCheng‐Hao ChuangLXLei Xing

Griffith University · East China University of Science and Technology · +6 more institutions

PubMed
Indexed incrossrefpubmed

Abstract

Abstract The development of oxygen reduction reaction (ORR) electrocatalysts based on earth‐abundant nonprecious materials is critically important for sustainable large‐scale applications of fuel cells and metal–air batteries. Herein, a hetero‐single‐atom (h‐SA) ORR electrocatalyst is presented, which has atomically dispersed Fe and Ni coanchored to a microsized nitrogen‐doped graphitic carbon support with unique trimodal‐porous structure configured by highly ordered macropores interconnected through mesopores. Extended X‐ray absorption fine structure spectra confirm that Fe‐ and Ni‐SAs are affixed to the carbon support via FeN 4 and NiN 4 coordination bonds. The resultant Fe/Ni h‐SA electrocatalyst exhibits…

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Topics & keywords

Topics
Keywords
  • Electrocatalyst
  • Materials science
  • Carbon fibers
  • Chemical engineering
  • Mesoporous material
  • Metal
  • Porosity
  • Catalysis
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