articleNature CommunicationsSep 27, 2023GOLD OA

Activating lattice oxygen in high-entropy LDH for robust and durable water oxidation

FWFangqing WangPZPeichao ZouYZYangyang ZhangWPWenli PanYLYing Li

Hebei University of Technology · University of California, Irvine · +2 more institutions

PubMed
Indexed incrossrefdoajpubmed

Abstract

Abstract The oxygen evolution reaction is known to be a kinetic bottleneck for water splitting. Triggering the lattice oxygen oxidation mechanism (LOM) can break the theoretical limit of the conventional adsorbate evolution mechanism and enhance the oxygen evolution reaction kinetics, yet the unsatisfied stability remains a grand challenge. Here, we report a high-entropy MnFeCoNiCu layered double hydroxide decorated with Au single atoms and O vacancies (Au SA -MnFeCoNiCu LDH), which not only displays a low overpotential of 213 mV at 10 mA cm −2 and high mass activity of 732.925 A g −1 at 250 mV overpotential in 1.0 M KOH, but also delivers good stability with 700 h of continuous operation at ~100 mA cm −2 .…

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Authors

9

Topics & keywords

Topics
Keywords
  • Overpotential
  • Oxygen evolution
  • Oxygen
  • Density functional theory
  • Materials science
  • Hydroxide
  • Chemical physics
  • Chemistry
UN Sustainable Development Goals
  • Affordable and clean energy
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