Aboelazm, Eslam A. A. and Ali, Gomaa A. M. and Algarni, H. and K. F., Chong (2018) Flakes Size-Dependent Optical and Electrochemical Properties of MoS2. Current Nanoscience, 14 (5). pp. 416-420. ISSN 1573-4137 (Print); 1875-6786 (Online). (Published)
|
Pdf
Flakes Size.pdf Download (103kB) | Preview |
Abstract
Background: Molybdenum disulfide (MoS2) is a transition metal dichalcogenides and has some interesting and promising properties. MoS2 has direct and indirect band gaps depending on its crystalline structure. In addition, its sheets morphology makes it a good candidate for supercapacitor applications. Objective: The aim of this work is to study the effect of MoS2 flakes size on its optical and electrochemical properties. Method: MoS2 with different flakes sizes were prepared by exfoliation method. The exfoliation was performed by sonication of MoS2 powder in N,N-Dimethylformamide followed by different centrifugation speeds. UV-Vis spectra illustrated the optical energy gap was inversely proportional to the MoS2 flakes size. Results: Absorption coefficient values indicated that the exfoliation reduced the number of layers. Symmetric supercapacitor was made from two MoS2 electrodes and tested in 6 M KOH electrolyte. The specific capacitance was found to be dramatically increased with decreasing flakes size (9.5 and 4.5 mF/cm2 for 0.26 and 0.98 µm flakes size, respectively). Conclusion: These findings recommend that MoS2 can be the excellent electrode material for supercapacitor.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Molybdenum disulfide, nanoflakes, optical band gap, supercapacitors, cyclic voltammetry, Transition Metal Dichalcogenides (TMDs) |
| Subjects: | Q Science > QD Chemistry |
| Faculty/Division: | Faculty of Industrial Sciences And Technology Institute of Postgraduate Studies |
| Depositing User: | Noorul Farina Arifin |
| Date Deposited: | 18 Sep 2018 04:14 |
| Last Modified: | 28 Feb 2020 01:24 |
| URI: | http://umpir.ump.edu.my/id/eprint/22120 |
| Download Statistic: | View Download Statistics |
Actions (login required)
 |
View Item |