One-step facile hydrothermal synthesis of rGO-CoS2 nanocomposites for high performance HER electrocatalysts

Sankar Sekar, S. Brindha Devi, S. Maruthasalamoorthy, T. Maiyalagan, Deuk Young Kim, Sejoon Lee, R. Navamathavan

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

With increasing demand for green and clean energy, the research community moves toward electrocatalytic hydrogen production. Herein, we synthesized the reduced graphene oxide decorated-cobalt disulfide (rGO-CoS2) nanocomposites via the one-step facile hydrothermal method and investigated their excellent hydrogen evolution reaction (HER) activities. The rGO-CoS2 nanocomposites showed an aggregated structure of spherical CoS2 nanoparticles interconnected along with GO nanosheets. The rGO-CoS2 nanocomposites exhibited a low overpotential of 377 mV and a small Tafel slope of 121 mV/dec. This work delivers a prospective scheme for developing the high efficient rGO-CoS2 electrocatalysts for future green energy technology in hydrogen production.

Original languageEnglish
Pages (from-to)40359-40367
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume47
Issue number95
DOIs
StatePublished - 8 Dec 2022

Keywords

  • 2D nanostructures
  • Cobalt disulfide
  • Electrocatalyst
  • Hydrogen evolution reaction
  • rGO

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