articleSmallAug 20, 2020Closed access

Co‐Induced Electronic Optimization of Hierarchical NiFe LDH for Oxygen Evolution

YLYanping LinHWHao WangCPChun‐Kuo PengLBLiangmin BuCCChao‐Lung Chiang

Soochow University · National Synchrotron Radiation Research Center · +1 more institution

PubMed
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Abstract

Abstract Developing efficient and stable non‐noble electrocatalysts for the oxygen evolution reaction (OER) remains challenging for practical applications. While nickel–iron layered double hydroxides (NiFe‐LDH) are emerging as prominent candidates with promising OER activity, their catalytic performance is still restricted by the limited active sites, poor conductivity and durability. Herein, hierarchical nickel–iron–cobalt LDH nanosheets/carbon fibers (NiFeCo‐LDH/CF) are synthesized through solvent‐thermal treatment of ZIF‐67/CF. Extended X‐ray adsorption fine structure analyses reveal that the Co substitution can stabilize the Fe local coordination environment and facilitate the π‐symmetry bonding orbital in…

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Authors

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Topics & keywords

Topics
Keywords
  • Overpotential
  • Oxygen evolution
  • Nickel
  • Materials science
  • Catalysis
  • Cobalt
  • Chemical engineering
  • Layered double hydroxides
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