On a Two-Dimensional MoS2/Mo2CTxHydrogen Evolution Catalyst Obtained by the Topotactic Sulfurization of Mo2CTxMXene

Mohamed Benchakar; Varun Natu; Tarek Ali Elmelegy; Maxim Sokol; Joshua Snyder; Clément Comminges; Claúdia Morais; Stéphane Célérier; Aurélien Habrioux; Michel W. Barsoum

doi:10.1149/1945-7111/abad6e

On a Two-Dimensional MoS₂/Mo₂CT_xHydrogen Evolution Catalyst Obtained by the Topotactic Sulfurization of Mo₂CT_xMXene

Mohamed Benchakar, Varun Natu, Tarek Ali Elmelegy, Maxim Sokol, Joshua Snyder, Clément Comminges, Claúdia Morais, Stéphane Célérier, Aurélien Habrioux, Michel W. Barsoum

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

Abstract

Herein we topotactically reacted sulphur, S, with Mo2CTx MXene powders to synthesize Mo2CTx sheets covered by MoS2 nanosheets and tested the resulting material as a hydrogen evolution reaction, HER, electrocatalyst. As a result, a high electrochemical active surface area catalyst was obtained. It allows driving a current density of 10 mA cm-2 at a low overpotential of only 150 mV. Stabilization of the water activated complex as well as interfacial charge transfer accompanied by changes in the adsorption energy hydrogen are most likely responsible for the high electrochemical activity. Moreover, no efficiency loss was observed under working conditions during 30 h in a 1 mol l-1 KOH electrolyte, confirming the remarkable electrochemical stability of this composite catalyst.

Original language	English
Article number	124507
Journal	Journal of the Electrochemical Society
Volume	167
Issue number	12
DOIs	https://doi.org/10.1149/1945-7111/abad6e
State	Published - 9 Jan 2020
Externally published	Yes

UN SDGs

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

SDG 7 Affordable and Clean Energy

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Condensed Matter Physics
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

Access to Document

10.1149/1945-7111/abad6e

Cite this

@article{aef2592bc9e14a84be96ca7cdc94a56c,

title = "On a Two-Dimensional MoS2/Mo2CTxHydrogen Evolution Catalyst Obtained by the Topotactic Sulfurization of Mo2CTxMXene",

abstract = "Herein we topotactically reacted sulphur, S, with Mo2CTx MXene powders to synthesize Mo2CTx sheets covered by MoS2 nanosheets and tested the resulting material as a hydrogen evolution reaction, HER, electrocatalyst. As a result, a high electrochemical active surface area catalyst was obtained. It allows driving a current density of 10 mA cm-2 at a low overpotential of only 150 mV. Stabilization of the water activated complex as well as interfacial charge transfer accompanied by changes in the adsorption energy hydrogen are most likely responsible for the high electrochemical activity. Moreover, no efficiency loss was observed under working conditions during 30 h in a 1 mol l-1 KOH electrolyte, confirming the remarkable electrochemical stability of this composite catalyst.",

author = "Mohamed Benchakar and Varun Natu and Elmelegy, \{Tarek Ali\} and Maxim Sokol and Joshua Snyder and Cl{\'e}ment Comminges and Cla{\'u}dia Morais and St{\'e}phane C{\'e}l{\'e}rier and Aur{\'e}lien Habrioux and Barsoum, \{Michel W.\}",

note = "Publisher Copyright: {\textcopyright} 2020 The Electrochemical Society ({"}ECS{"}). Published on behalf of ECS by IOP Publishing Limited.",

year = "2020",

month = jan,

day = "9",

doi = "10.1149/1945-7111/abad6e",

language = "الإنجليزيّة",

volume = "167",

journal = "Journal of the Electrochemical Society",

issn = "0013-4651",

publisher = "Institute of Physics",

number = "12",

}

TY - JOUR

T1 - On a Two-Dimensional MoS2/Mo2CTxHydrogen Evolution Catalyst Obtained by the Topotactic Sulfurization of Mo2CTxMXene

AU - Benchakar, Mohamed

AU - Natu, Varun

AU - Elmelegy, Tarek Ali

AU - Sokol, Maxim

AU - Snyder, Joshua

AU - Comminges, Clément

AU - Morais, Claúdia

AU - Célérier, Stéphane

AU - Habrioux, Aurélien

AU - Barsoum, Michel W.

PY - 2020/1/9

Y1 - 2020/1/9

N2 - Herein we topotactically reacted sulphur, S, with Mo2CTx MXene powders to synthesize Mo2CTx sheets covered by MoS2 nanosheets and tested the resulting material as a hydrogen evolution reaction, HER, electrocatalyst. As a result, a high electrochemical active surface area catalyst was obtained. It allows driving a current density of 10 mA cm-2 at a low overpotential of only 150 mV. Stabilization of the water activated complex as well as interfacial charge transfer accompanied by changes in the adsorption energy hydrogen are most likely responsible for the high electrochemical activity. Moreover, no efficiency loss was observed under working conditions during 30 h in a 1 mol l-1 KOH electrolyte, confirming the remarkable electrochemical stability of this composite catalyst.

AB - Herein we topotactically reacted sulphur, S, with Mo2CTx MXene powders to synthesize Mo2CTx sheets covered by MoS2 nanosheets and tested the resulting material as a hydrogen evolution reaction, HER, electrocatalyst. As a result, a high electrochemical active surface area catalyst was obtained. It allows driving a current density of 10 mA cm-2 at a low overpotential of only 150 mV. Stabilization of the water activated complex as well as interfacial charge transfer accompanied by changes in the adsorption energy hydrogen are most likely responsible for the high electrochemical activity. Moreover, no efficiency loss was observed under working conditions during 30 h in a 1 mol l-1 KOH electrolyte, confirming the remarkable electrochemical stability of this composite catalyst.

UR - http://www.scopus.com/inward/record.url?scp=85090116212&partnerID=8YFLogxK

U2 - 10.1149/1945-7111/abad6e

DO - 10.1149/1945-7111/abad6e

M3 - مقالة

SN - 0013-4651

VL - 167

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 12

M1 - 124507

ER -