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

doi:10.1016/j.ijhydene.2022.04.069

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 journal › Article › peer-review

23 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 language	English
Pages (from-to)	40359-40367
Number of pages	9
Journal	International Journal of Hydrogen Energy
Volume	47
Issue number	95
DOIs	https://doi.org/10.1016/j.ijhydene.2022.04.069
State	Published - 8 Dec 2022

Keywords

2D nanostructures
Cobalt disulfide
Electrocatalyst
Hydrogen evolution reaction
rGO

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2022.04.069

Cite this

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title = "One-step facile hydrothermal synthesis of rGO-CoS2 nanocomposites for high performance HER electrocatalysts",

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.",

keywords = "2D nanostructures, Cobalt disulfide, Electrocatalyst, Hydrogen evolution reaction, rGO",

author = "Sankar Sekar and \{Brindha Devi\}, S. and S. Maruthasalamoorthy and T. Maiyalagan and Kim, \{Deuk Young\} and Sejoon Lee and R. Navamathavan",

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doi = "10.1016/j.ijhydene.2022.04.069",

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AU - Sekar, Sankar

AU - Brindha Devi, S.

AU - Maruthasalamoorthy, S.

AU - Maiyalagan, T.

AU - Kim, Deuk Young

AU - Lee, Sejoon

AU - Navamathavan, R.

PY - 2022/12/8

Y1 - 2022/12/8

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AB - 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.

KW - 2D nanostructures

KW - Cobalt disulfide

KW - Electrocatalyst

KW - Hydrogen evolution reaction

KW - rGO

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