articleNature CommunicationsJan 16, 2024GOLD OA

Site-specific metal-support interaction to switch the activity of Ir single atoms for oxygen evolution reaction

JWJie WeiHTHua TangLSLi ShengRWRuyang WangMFMinghui Fan

University of Science and Technology of China · Hefei National Center for Physical Sciences at Nanoscale · +4 more institutions

PubMed
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Abstract

The metal-support interactions (MSI) could greatly determine the electronic properties of single-atom catalysts, thus affecting the catalytic performance. However, the typical approach to regulating MSI usually suffers from interference of the variation of supports or sacrificing the stability of catalysts. Here, we effectively regulate the site-specific MSI of Ir single atoms anchored on Ni layered double hydroxide through an electrochemical deposition strategy. Cathodic deposition drives Ir atoms to locate at three-fold facial center cubic hollow sites with strong MSI, while anodic deposition drives Ir atoms to deposit onto oxygen vacancy sites with weak MSI. The mass activity and intrinsic activity of Ir…

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168
total citations
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15.57
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100%
References
44
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Authors

10

Topics & keywords

Topics
Keywords
  • Catalysis
  • Metal
  • Atom (system on chip)
  • Electrochemistry
  • Oxygen
  • Chemistry
  • Adsorption
  • Hydroxide
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