Synthesis of Cobalt Sulfide/Sulfur Doped Carbon Nanocomposites with Efficient Catalytic Activity in the Oxygen Evolution Reaction

Huayu Qian, Jing Tang, Zhongli Wang, Jeonghun Kim, Jung Ho Kim, Saad M. Alshehri, Ekrem Yanmaz, Xin Wang, Yusuke Yamauchi

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

Cobalt sulfide/sulfur doped carbon composites (Co9S8/S-C) were synthesized by calcining a rationally designed sulfur-containing cobalt coordination complex in an inert atmosphere. From the detailed transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) analyses, the electrocatalytically active Co9S8 nanoparticles were clearly obtained and combined with the thin sulfur doped carbon layers. Electrochemical data showed that Co9S8/S-C had a good activity and long-term stability in catalyzing oxygen evolution reaction in alkaline electrolyte, even better than the traditional RuO2 electrocatalyst. The excellent electrocatalytic activity of Co9S8/S-C was mainly attributed to the synergistic effect between the Co9S8 catalyst which contributed to the oxygen evolution reaction and the sulfur doped carbon layer which facilitated the adsorption of reactants, prevented the Co9S8 particles from aggregating and served as the electrically conductive binder between each component.

Original languageEnglish
Pages (from-to)18259-18264
Number of pages6
JournalChemistry - A European Journal
Volume22
Issue number50
DOIs
Publication statusPublished - 2016 Dec 12

Bibliographical note

Publisher Copyright:
© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Organic Chemistry

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