Hierarchical nanocomposite of cobalt sulfide nanoflakes-decorated reduced graphene oxide for enhancing the electrocatalytic hydrogen evolution reaction

Senthilkumar Muthu; Mano Balaji Gandhi; S. Saravanan; Sankar Sekar; S. Arun Kumar; P. Ilanchezhiyan; Sejoon Lee; Moorthy Babu Sridharan

doi:10.1016/j.ijhydene.2023.05.194

Hierarchical nanocomposite of cobalt sulfide nanoflakes-decorated reduced graphene oxide for enhancing the electrocatalytic hydrogen evolution reaction

Senthilkumar Muthu
, Mano Balaji Gandhi
, S. Saravanan
, Sankar Sekar
, S. Arun Kumar
, P. Ilanchezhiyan
, Sejoon Lee
, Moorthy Babu Sridharan

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

The hydrogen evolution reaction (HER) driven by electrocatalytic water splitting is attaining prevalent attention for the manufacturing of clean and green hydrogen energy. Herein, we report the simple one-step hydrothermal synthesis of cobalt sulfide nanoflakes decorated with reduced graphene oxide (CoS/rGO) nanocomposites as an effective electrode material for HER. The CoS/rGO nanocomposites exhibited the rGO nanosheet-decorated hierarchically interconnected CoS nanoflakes structure. The CoS/rGO nanocomposites exhibited an excellent HER activity with a low overpotential of 371 mV and a small Tafel slope of 103 mV/dec. More interestingly, the catalytic stability of CoS/rGO nanocomposites is comparatively higher than the pristine CoS NFs. These results suggest that the facile nanocomposites of CoS/rGO could be a prominent catalytic material for effective green hydrogen production.

Original language	English
Pages (from-to)	1405-1414
Number of pages	10
Journal	International Journal of Hydrogen Energy
Volume	52
DOIs	https://doi.org/10.1016/j.ijhydene.2023.05.194
State	Published - 2 Jan 2024

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

CoS/rGO nanocomposites
Electrocatalyst
Hierarchical nanostructures
Hydrogen evolution reaction
Water splitting

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10.1016/j.ijhydene.2023.05.194

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Muthu, S., Gandhi, M. B., Saravanan, S., Sekar, S., Arun Kumar, S., Ilanchezhiyan, P., Lee, S., & Sridharan, M. B. (2024). Hierarchical nanocomposite of cobalt sulfide nanoflakes-decorated reduced graphene oxide for enhancing the electrocatalytic hydrogen evolution reaction. International Journal of Hydrogen Energy, 52, 1405-1414. https://doi.org/10.1016/j.ijhydene.2023.05.194

@article{ea55c472fab04af78bb75bbd31596aa4,

title = "Hierarchical nanocomposite of cobalt sulfide nanoflakes-decorated reduced graphene oxide for enhancing the electrocatalytic hydrogen evolution reaction",

abstract = "The hydrogen evolution reaction (HER) driven by electrocatalytic water splitting is attaining prevalent attention for the manufacturing of clean and green hydrogen energy. Herein, we report the simple one-step hydrothermal synthesis of cobalt sulfide nanoflakes decorated with reduced graphene oxide (CoS/rGO) nanocomposites as an effective electrode material for HER. The CoS/rGO nanocomposites exhibited the rGO nanosheet-decorated hierarchically interconnected CoS nanoflakes structure. The CoS/rGO nanocomposites exhibited an excellent HER activity with a low overpotential of 371 mV and a small Tafel slope of 103 mV/dec. More interestingly, the catalytic stability of CoS/rGO nanocomposites is comparatively higher than the pristine CoS NFs. These results suggest that the facile nanocomposites of CoS/rGO could be a prominent catalytic material for effective green hydrogen production.",

keywords = "CoS/rGO nanocomposites, Electrocatalyst, Hierarchical nanostructures, Hydrogen evolution reaction, Water splitting",

author = "Senthilkumar Muthu and Gandhi, \{Mano Balaji\} and S. Saravanan and Sankar Sekar and \{Arun Kumar\}, S. and P. Ilanchezhiyan and Sejoon Lee and Sridharan, \{Moorthy Babu\}",

note = "Publisher Copyright: {\textcopyright} 2023 Hydrogen Energy Publications LLC",

year = "2024",

month = jan,

day = "2",

doi = "10.1016/j.ijhydene.2023.05.194",

language = "English",

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Muthu, S, Gandhi, MB, Saravanan, S, Sekar, S, Arun Kumar, S, Ilanchezhiyan, P, Lee, S & Sridharan, MB 2024, 'Hierarchical nanocomposite of cobalt sulfide nanoflakes-decorated reduced graphene oxide for enhancing the electrocatalytic hydrogen evolution reaction', International Journal of Hydrogen Energy, vol. 52, pp. 1405-1414. https://doi.org/10.1016/j.ijhydene.2023.05.194

TY - JOUR

T1 - Hierarchical nanocomposite of cobalt sulfide nanoflakes-decorated reduced graphene oxide for enhancing the electrocatalytic hydrogen evolution reaction

AU - Muthu, Senthilkumar

AU - Gandhi, Mano Balaji

AU - Saravanan, S.

AU - Sekar, Sankar

AU - Arun Kumar, S.

AU - Ilanchezhiyan, P.

AU - Lee, Sejoon

AU - Sridharan, Moorthy Babu

PY - 2024/1/2

Y1 - 2024/1/2

N2 - The hydrogen evolution reaction (HER) driven by electrocatalytic water splitting is attaining prevalent attention for the manufacturing of clean and green hydrogen energy. Herein, we report the simple one-step hydrothermal synthesis of cobalt sulfide nanoflakes decorated with reduced graphene oxide (CoS/rGO) nanocomposites as an effective electrode material for HER. The CoS/rGO nanocomposites exhibited the rGO nanosheet-decorated hierarchically interconnected CoS nanoflakes structure. The CoS/rGO nanocomposites exhibited an excellent HER activity with a low overpotential of 371 mV and a small Tafel slope of 103 mV/dec. More interestingly, the catalytic stability of CoS/rGO nanocomposites is comparatively higher than the pristine CoS NFs. These results suggest that the facile nanocomposites of CoS/rGO could be a prominent catalytic material for effective green hydrogen production.

AB - The hydrogen evolution reaction (HER) driven by electrocatalytic water splitting is attaining prevalent attention for the manufacturing of clean and green hydrogen energy. Herein, we report the simple one-step hydrothermal synthesis of cobalt sulfide nanoflakes decorated with reduced graphene oxide (CoS/rGO) nanocomposites as an effective electrode material for HER. The CoS/rGO nanocomposites exhibited the rGO nanosheet-decorated hierarchically interconnected CoS nanoflakes structure. The CoS/rGO nanocomposites exhibited an excellent HER activity with a low overpotential of 371 mV and a small Tafel slope of 103 mV/dec. More interestingly, the catalytic stability of CoS/rGO nanocomposites is comparatively higher than the pristine CoS NFs. These results suggest that the facile nanocomposites of CoS/rGO could be a prominent catalytic material for effective green hydrogen production.

KW - CoS/rGO nanocomposites

KW - Electrocatalyst

KW - Hierarchical nanostructures

KW - Hydrogen evolution reaction

KW - Water splitting

UR - https://www.scopus.com/pages/publications/85161031174

U2 - 10.1016/j.ijhydene.2023.05.194

DO - 10.1016/j.ijhydene.2023.05.194

M3 - Article

AN - SCOPUS:85161031174

SN - 0360-3199

VL - 52

SP - 1405

EP - 1414

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

ER -

Hierarchical nanocomposite of cobalt sulfide nanoflakes-decorated reduced graphene oxide for enhancing the electrocatalytic hydrogen evolution reaction

Abstract

UN SDGs

Keywords

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