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Facile Synthesis of Sulfur‐Containing Transition Metal (Mn, Fe, Co, and Ni) (Hydr)oxides for Efficient Oxygen Evolution Reaction
Author(s) -
Zeng Feng,
Broicher Cornelia,
Hofmann Jan P.,
Palkovits Stefan,
Palkovits Regina
Publication year - 2020
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201901493
Subject(s) - tafel equation , oxygen evolution , overpotential , transition metal , cobalt , catalysis , inorganic chemistry , sulfur , chemistry , nickel , manganese , oxide , materials science , heteroatom , chemical engineering , electrochemistry , electrode , organic chemistry , ring (chemistry) , engineering
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 , a low Tafel slope of 66 mV dec −1 , and good stability.