Fe 2+ ‐ Induced Activation of Single and Dual Metal Site—Lattice Oxygen Mechanism in Fe Rich NiFe‐LDHs for Oxygen Evolution Reaction

ABSTRACT Developing a durable and efficient oxygen evolution reaction (OER) catalyst without noble metals is essential for the economical and sustainable production of hydrogen by alkaline water electrolysis. Recent studies have advocated triggering the lattice oxygen mechanism (LOM) to reduce the overpotential of catalysis and overcome the inherent limitations of the adsorbate evolution mechanism (AEM). Herein, we explored a facile and scalable method for synthesizing an iron‐rich nickel‐layered double hydroxide (NiFe‐LDH) with a unique hollow nanocapsule morphology using a metal‐organic framework (MOF) MIL‐88A as a sacrificial template for OER. The transformation of the MOF into hollow NiFe‐LDH provides…

• HR
  Harish-Chandra Research Institute
• DO
  Department of Science and Technology, Ministry of Science and Technology, India
• MO
  Ministry of Science, ICT and Future Planning

  Award: 2022K1A4A8A01080312
• NR
  National Research Foundation of Korea
• AR
  Australian Research Council

  Awards: DP220103045, DE190100965