articleAdvanced MaterialsJul 24, 2023BRONZE OA

A 3d‐4d‐5d High Entropy Alloy as a Bifunctional Oxygen Catalyst for Robust Aqueous Zinc–Air Batteries

RHRen HeLYLinlin YangYZYu ZhangDJDaochuan JiangSLSeungho Lee

Institut de Recerca en Energia de Catalunya · Universitat de Barcelona · +9 more institutions

PubMed
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Abstract

Abstract High entropy alloys (HEAs) are highly suitable candidate catalysts for oxygen evolution and reduction reactions (OER/ORR) as they offer numerous parameters for optimizing the electronic structure and catalytic sites. Herein, FeCoNiMoW HEA nanoparticles are synthesized using a solution‐based low‐temperature approach. Such FeCoNiMoW nanoparticles show high entropy properties, subtle lattice distortions, and modulated electronic structure, leading to superior OER performance with an overpotential of 233 mV at 10 mA cm −2 and 276 mV at 100 mA cm −2 . Density functional theory calculations reveal the electronic structures of the FeCoNiMoW active sites with an optimized d‐band center position that enables…

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196
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Authors

14

Topics & keywords

Topics
Keywords
  • Materials science
  • Overpotential
  • Oxygen evolution
  • Density functional theory
  • Bifunctional
  • Nanoparticle
  • Gibbs free energy
  • Catalysis
UN Sustainable Development Goals
  • Affordable and clean energy
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