articleAdvanced Functional MaterialsApr 7, 2025Closed access

Accelerating the Transformation of Active β‐NiOOH on NiFe Layered Double Hydroxide via Cation–anion Collaborative Coordination for Alkaline Water Oxidation at High Current Densities

FSFujun ShiLXLiyang XiaoZZZhenglin ZhouXZXueru ZhaoYLYing Liu

Hainan University · Tianjin University of Technology · +1 more institution

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Abstract

Abstract The NiFe‐based layered double hydroxides (LDH) undergo surface reconstruction, generating metal hydroxyl oxides that act as active species during the alkaline oxygen evolution reaction (OER). However, the sluggish reconstruction process and excessive oxidation at higher anodic potentials frustrate the alkaline OER activity and stability. Herein, a cation–anion collaborative coordination strategy is harnessed to build (Ni, Fe)─S─Zn coordination structures in NiFe LDH on the nickel foam (S‐NiFeZn LDH/NF), which lowers the reconstruction energy barrier and aids in forming highly active β‐NiOOH during the alkaline OER process. Meanwhile, the coordination structures also optimize the adsorption of…

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Topics & keywords

Topics
Keywords
  • Materials science
  • Hydroxide
  • Ion
  • Current (fluid)
  • Transformation (genetics)
  • Layered double hydroxides
  • Inorganic chemistry
  • Chemical engineering
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