articleACS CatalysisApr 19, 2024Closed access

Boosting Hydrogen Adsorption via Manipulating the d-Band Center of Ferroferric Oxide for Anion Exchange Membrane-Based Seawater Electrolysis

LSLong SongLGLili GuoJMJiayu MaoZLZhipeng LiJZJiawei Zhu

Qingdao University of Science and Technology · China University of Petroleum, East China

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Abstract

Ferroferric oxide-based electrocatalysts are widely applied as hydrogen evolution reaction (HER) catalysts due to their low cost and good electrical conductivity, but they tend to exhibit slow hydrogen adsorption kinetics for HER and poison by corrosive Cl– for alkaline seawater splitting. In this regard, we report a nanosheet-like HER catalyst constructed by decorating Fe3O4 with Ru and P dual doping (Ru/P–Fe3O4@IF). In situ characterization and density functional theory (DFT) calculations demonstrate that the resulting Ru/P–Fe3O4@IF catalyst shows enhanced hydrogen adsorption strength and hydrogen coverage with a thermal neutral free energy of adsorbed H (ΔGH*) due to Ru and P dual doping modulating the…

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Topics & keywords

Topics
Keywords
  • Boosting (machine learning)
  • Electrolysis
  • Catalysis
  • Seawater
  • Membrane
  • Chemistry
  • Adsorption
  • Ion exchange
UN Sustainable Development Goals
  • Life below water
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