articleAdvanced Functional MaterialsApr 27, 2022Closed access

Partial Sulfidation Strategy to NiFe‐LDH@FeNi 2 S 4 Heterostructure Enable High‐Performance Water/Seawater Oxidation

LTLei TanJYJiangtao YuCWChao WangHWHaifeng WangXLXien Liu

Qingdao University of Science and Technology · Donghua University · +1 more institution

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Abstract

Abstract The development of a high‐performance electrocatalyst for oxygen evolution reaction (OER) is imperative but challenging. Here, a partial sulfidation route to construct Ni 2 Fe‐LDH/FeNi 2 S 4 heterostructure on nickel foam (Ni 2 Fe‐LDH/FeNi 2 S 4 /NF) by adjusting the hydrothermal duration is reported. The heterostructures afford abundant hydroxide/sulfide interfaces that offer plentiful active sites, rapid charge and mass transfer, favorable adsorption energy to oxygenated species (OH − and OOH) evidenced by the density functional theory calculations, which synergistically boost the alkaline water oxidation. In the 1.0 m KOH solution, Ni 2 Fe‐LDH/FeNi 2 S 4 /NF exhibits an excellent OER catalytic…

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Topics & keywords

Topics
Keywords
  • Overpotential
  • Sulfidation
  • Materials science
  • Oxygen evolution
  • Hydroxide
  • Water splitting
  • Catalysis
  • Chemical engineering
UN Sustainable Development Goals
  • Life below water
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