Facile synthesis of sulfur-containing transition metal (Mn, Fe, Co, and Ni) (hydr)oxides for efficient oxygen evolution reaction

Feng Zeng, Cornelia Broicher, Jan Philipp Hofmann, Stefan Palkovits, Regina Palkovits (Corresponding author)

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Abstract

Transition metal based materials are promising non‐noble metal based catalysts for the oxygen evolution reaction (OER). Transition metal (hydr)oxides have been intensively investigated as OER catalysts. Promoting transition metal (hydr)oxides with heteroatoms or using carbon materials as additives can increase the electric conductivity and tailor the nature of active sites to enhance OER activity. We developed a scalable one‐step wet chemical method to prepare sulfur‐containing transition metal (manganese, iron, cobalt, and nickel) (hydr)oxides coupled with carbon nanotubes as additives to tailor OER performance. Facilitated OER kinetics, enhanced intrinsic activity, and high electrochemically active surface area derived from sulfur promotion with/without carbon nanotubes addition together with the nanostructure of the materials led to decent OER performance. Sulfur‐containing cobalt (hydr)oxide achieved a low overpotential of 0.38 V at 10 mA cm ‐2 together with a low Tafel slope of 66 mV dec ‐1 , and good stability.
Original languageEnglish
Pages (from-to)710-716
Number of pages7
JournalChemCatChem
Volume12
Issue number3
Early online date2019
DOIs
Publication statusPublished - 6 Feb 2020

Keywords

  • OER
  • oxygen evolution reaction
  • sulfur-containing
  • transition metal hydroxides
  • transition metal oxides

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