Solvent effects on the electrochemical performance of few layered MoS2 electrodes fabricated using FTO substrates
Owing to its exceptional structural, electrical, and optical features, Molybdenum disulphide (MoS _2 ), a two-dimensional (2D) layered material with tuneable bandgap, finds its application in electrochemical supercapacitors for superior energy and power density. Because of their low toxicity and lon...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | Nano Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2632-959X/ad2b82 |
| _version_ | 1797276826943356928 |
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| author | Abin Philip A Ruban Kumar |
| author_facet | Abin Philip A Ruban Kumar |
| author_sort | Abin Philip |
| collection | DOAJ |
| description | Owing to its exceptional structural, electrical, and optical features, Molybdenum disulphide (MoS _2 ), a two-dimensional (2D) layered material with tuneable bandgap, finds its application in electrochemical supercapacitors for superior energy and power density. Because of their low toxicity and long-term energy storage, the development of MoS _2 -based supercapacitors is inevitable. The study of solvent effects on the electrochemical performance of a few layered MoS _2 using FTO substrates is done for the first time to the best of our knowledge. Exfoliating bulk MoS _2 powder in different solvents with variable surface tensions such as Ethanol, Ethylene Glycol (EG), Dimethylformamide (DMF), and Dimethyl Sulfoxide (DMSO) results in the formation of few-layered MoS _2 structures. The sample’s structural, optical, and electrochemical behaviours are investigated using x-ray diffraction (XRD), atomic force microscopy (AFM), UV spectroscopy, Fourier transform infrared (FTIR), cyclic-voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS). XRD confirms the formation of a 2D MoS _2 film with (002) planes and the optical investigation revealed the variation of layer-dependent bandgap with solvents. We observe both faradaic and non-faradaic charge storage mechanisms in the samples and demonstrate a superior pseudocapacitive behaviour for MoS _2 in DMF with a maximum specific capacitance of 34.25 F g ^−1 at a current density of 1 A/g. |
| first_indexed | 2024-03-07T15:34:32Z |
| format | Article |
| id | doaj.art-a1554e96b9b34461b2a16f0ab5982b47 |
| institution | Directory Open Access Journal |
| issn | 2632-959X |
| language | English |
| last_indexed | 2024-03-07T15:34:32Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Nano Express |
| spelling | doaj.art-a1554e96b9b34461b2a16f0ab5982b472024-03-05T11:58:47ZengIOP PublishingNano Express2632-959X2024-01-015101501510.1088/2632-959X/ad2b82Solvent effects on the electrochemical performance of few layered MoS2 electrodes fabricated using FTO substratesAbin Philip0A Ruban Kumar1https://orcid.org/0000-0001-6835-9392School of Advanced Sciences , Vellore Institute of Technology, Vellore, Tamil Nadu-632014, IndiaSchool of Advanced Sciences , Vellore Institute of Technology, Vellore, Tamil Nadu-632014, IndiaOwing to its exceptional structural, electrical, and optical features, Molybdenum disulphide (MoS _2 ), a two-dimensional (2D) layered material with tuneable bandgap, finds its application in electrochemical supercapacitors for superior energy and power density. Because of their low toxicity and long-term energy storage, the development of MoS _2 -based supercapacitors is inevitable. The study of solvent effects on the electrochemical performance of a few layered MoS _2 using FTO substrates is done for the first time to the best of our knowledge. Exfoliating bulk MoS _2 powder in different solvents with variable surface tensions such as Ethanol, Ethylene Glycol (EG), Dimethylformamide (DMF), and Dimethyl Sulfoxide (DMSO) results in the formation of few-layered MoS _2 structures. The sample’s structural, optical, and electrochemical behaviours are investigated using x-ray diffraction (XRD), atomic force microscopy (AFM), UV spectroscopy, Fourier transform infrared (FTIR), cyclic-voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS). XRD confirms the formation of a 2D MoS _2 film with (002) planes and the optical investigation revealed the variation of layer-dependent bandgap with solvents. We observe both faradaic and non-faradaic charge storage mechanisms in the samples and demonstrate a superior pseudocapacitive behaviour for MoS _2 in DMF with a maximum specific capacitance of 34.25 F g ^−1 at a current density of 1 A/g.https://doi.org/10.1088/2632-959X/ad2b82molybdenum disulphide (MoS2)solventsenergy storage devicessupercapacitor |
| spellingShingle | Abin Philip A Ruban Kumar Solvent effects on the electrochemical performance of few layered MoS2 electrodes fabricated using FTO substrates Nano Express molybdenum disulphide (MoS2) solvents energy storage devices supercapacitor |
| title | Solvent effects on the electrochemical performance of few layered MoS2 electrodes fabricated using FTO substrates |
| title_full | Solvent effects on the electrochemical performance of few layered MoS2 electrodes fabricated using FTO substrates |
| title_fullStr | Solvent effects on the electrochemical performance of few layered MoS2 electrodes fabricated using FTO substrates |
| title_full_unstemmed | Solvent effects on the electrochemical performance of few layered MoS2 electrodes fabricated using FTO substrates |
| title_short | Solvent effects on the electrochemical performance of few layered MoS2 electrodes fabricated using FTO substrates |
| title_sort | solvent effects on the electrochemical performance of few layered mos2 electrodes fabricated using fto substrates |
| topic | molybdenum disulphide (MoS2) solvents energy storage devices supercapacitor |
| url | https://doi.org/10.1088/2632-959X/ad2b82 |
| work_keys_str_mv | AT abinphilip solventeffectsontheelectrochemicalperformanceoffewlayeredmos2electrodesfabricatedusingftosubstrates AT arubankumar solventeffectsontheelectrochemicalperformanceoffewlayeredmos2electrodesfabricatedusingftosubstrates |