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Electrodeposition of MoS2 from dichloromethane

Electrodeposition of MoS2 from dichloromethane
Electrodeposition of MoS2 from dichloromethane
The electrodeposition of MoS2 from dichloromethane (CH2Cl2) using tetrabutylammonium tetrathiomolybdate ([NnBu4]2[MoS4]) as a single source precursor is presented. The electrodeposition of MoS2 from CH2Cl2 requires addition of a proton donor to the electrolyte and trimethylammonium chloride (Me3NHCl) was used for this purpose. Electrochemical Quartz Crystal Microbalance (EQCM) experiments have been employed for a detailed study of the electrochemical mechanism and to study the role of the proton donor. EQCM reveals cathodic electrodeposition of MoS2 and anodic deposition of MoS3 as well as an additional corrosion process where the deposited MoS3 strips back into solution. The electrodeposited MoS2 films are amorphous in nature. All the films were found to be homogeneous in composition across the electrode area and to be reproducible between experiments. Annealing of the as-deposited films under a sulfur atmosphere results in crystalline MoS2 as confirmed by energy dispersive X-ray spectroscopy (EDX), Raman spectroscopy and X-ray diffraction. The deposited films were smooth and planar, as observed with scanning electron microscopy (SEM), indicating a layer-by-layer growth typical of transition metal dichalogenides.
0013-4651
Thomas, Shibin
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Smith, Danielle Emily
dca4b149-33c4-4bc6-9f67-3d46b862363c
Greenacre, Victoria
c665a38b-0b1a-4671-ac75-bf0679dd1c57
Noori, Yasir
704d0b70-1ea6-4e00-92ce-cc2543087a09
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
De Groot, Cornelis
92cd2e02-fcc4-43da-8816-c86f966be90c
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Bartlett, Philip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Thomas, Shibin
f9dd0751-582b-4c35-9725-36fbe08bbda8
Smith, Danielle Emily
dca4b149-33c4-4bc6-9f67-3d46b862363c
Greenacre, Victoria
c665a38b-0b1a-4671-ac75-bf0679dd1c57
Noori, Yasir
704d0b70-1ea6-4e00-92ce-cc2543087a09
Hector, Andrew L.
f19a8f31-b37f-4474-b32a-b7cf05b9f0e5
De Groot, Cornelis
92cd2e02-fcc4-43da-8816-c86f966be90c
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
Bartlett, Philip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075

Thomas, Shibin, Smith, Danielle Emily, Greenacre, Victoria, Noori, Yasir, Hector, Andrew L., De Groot, Cornelis, Reid, Gillian and Bartlett, Philip N. (2020) Electrodeposition of MoS2 from dichloromethane. Journal of the Electrochemical Society, 167 (10), [106511]. (doi:10.1149/1945-7111/ab9c88).

Record type: Article

Abstract

The electrodeposition of MoS2 from dichloromethane (CH2Cl2) using tetrabutylammonium tetrathiomolybdate ([NnBu4]2[MoS4]) as a single source precursor is presented. The electrodeposition of MoS2 from CH2Cl2 requires addition of a proton donor to the electrolyte and trimethylammonium chloride (Me3NHCl) was used for this purpose. Electrochemical Quartz Crystal Microbalance (EQCM) experiments have been employed for a detailed study of the electrochemical mechanism and to study the role of the proton donor. EQCM reveals cathodic electrodeposition of MoS2 and anodic deposition of MoS3 as well as an additional corrosion process where the deposited MoS3 strips back into solution. The electrodeposited MoS2 films are amorphous in nature. All the films were found to be homogeneous in composition across the electrode area and to be reproducible between experiments. Annealing of the as-deposited films under a sulfur atmosphere results in crystalline MoS2 as confirmed by energy dispersive X-ray spectroscopy (EDX), Raman spectroscopy and X-ray diffraction. The deposited films were smooth and planar, as observed with scanning electron microscopy (SEM), indicating a layer-by-layer growth typical of transition metal dichalogenides.

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More information

e-pub ahead of print date: 23 June 2020
Published date: 23 June 2020

Identifiers

Local EPrints ID: 442417
URI: http://eprints.soton.ac.uk/id/eprint/442417
ISSN: 0013-4651
PURE UUID: 333bf8f1-f51e-4bbb-bd65-060ac3060c00
ORCID for Danielle Emily Smith: ORCID iD orcid.org/0000-0002-2446-1763
ORCID for Yasir Noori: ORCID iD orcid.org/0000-0001-5285-8779
ORCID for Andrew L. Hector: ORCID iD orcid.org/0000-0002-9964-2163
ORCID for Cornelis De Groot: ORCID iD orcid.org/0000-0002-3850-7101
ORCID for Gillian Reid: ORCID iD orcid.org/0000-0001-5349-3468
ORCID for Philip N. Bartlett: ORCID iD orcid.org/0000-0002-7300-6900

Catalogue record

Date deposited: 15 Jul 2020 16:31
Last modified: 18 Feb 2021 17:37

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