articleAdvanced MaterialsNov 14, 2024BRONZE OA

Low‐Spin Fe 3+ Evoked by Multiple Defects with Optimal Intermediate Adsorption Attaining Unparalleled Performance in Water Oxidation

YWYihao WangSLShanqing LiXHXu HouTCTingting CuiZZZechao Zhuang

Northeast Forestry University · Chizhou University · +6 more institutions

PubMed
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Abstract

Abstract Electrocatalytic water splitting is long constrained by the sluggish kinetics of anodic oxygen evolution reaction (OER), and rational spin‐state manipulation holds great promise to break through this bottleneck. Low‐spin Fe 3+ (LS, t 2g 5 e g 0 ) species are identified as highly active sites for OER in theory, whereas it is still a formidable challenge to construct experimentally. Herein, a new strategy is demonstrated for the effective construction of LS Fe 3+ in NiFe‐layered double hydroxide (NiFe‐LDH) by introducing multiple defects, which induce coordination unsaturation over Fe sites and thus enlarge their d orbital splitting energy. The as‐obtained catalyst exhibits extraordinary OER performance…

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125
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100%
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Authors

12

Topics & keywords

Topics
Keywords
  • Overpotential
  • Oxygen evolution
  • Water splitting
  • Materials science
  • Catalysis
  • Hydroxide
  • Density functional theory
  • Spin states
UN Sustainable Development Goals
  • Affordable and clean energy
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