Comparative electrocatalytic behavior of mesoporous FeP and FeS2 for the hydrogen evolution reaction

Alaaldin Adam, Haruna Adamu, Saleh Mohammed AlMansour, Fares Ahmed Turkestani, Ime Obot, Mohammad Qamar*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

FeP nanoparticles and FeS2 nanospheres with mesoporous surface are synthesized, and their performance is compared for the hydrogen evolution reaction under identical electrochemical conditions. The activity-determining characteristics of the electrodes, such as specific and electrochemically active surface area, electrochemical impedance and charge transfer resistance, Tafel slopes, number of catalytic active sites, and turnover frequency (TOF) are studied and correlated to their activity. Because of its larger surface area and reduced charge transfer resistance, the FeS2 showed superior HER performance than the FeP, despite the latter's higher intrinsic catalytic activity. The electrocatalytic stability of the electrocatalysts are also compared.

Original languageEnglish
Article number137312
JournalMaterials Letters
Volume377
DOIs
StatePublished - 15 Dec 2024

Bibliographical note

Publisher Copyright:
© 2024 Elsevier B.V.

Keywords

  • Energy storage and conversion
  • Nanocrystalline materials
  • Porous materials
  • Surfaces

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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