2-Dimensional layered molybdenum disulfide nanosheets and CTAB-assisted molybdenum disulfide nanoflower for high performance supercapacitor application

• Published in: Nanoscale advances 2022-01, Vol.4 (2), p.521-531
• Main Authors: Ganesha, H, Veeresh, S, Nagaraju, Y. S, Vandana, M, Basappa, M, Vijeth, H, Devendrappa, H
• Format: Article
• Language: English
• Subjects: Chemistry
• ISSN: 2516-0230; 2516-0230
• DOI: 10.1039/d1na00664a

In this study, the supercapacitor performance of the hydrothermal synthesized molybdenum disulfide (MoS 2 ) nanosheets and the cetyltrimethylammonium bromide (CTAB)-assisted MoS 2 nanoflower morphology have been investigated. The as-synthesized MoS 2 nanoflower and nanosheet morphology structures were investigated via field emission scanning electron microscopy (FESEM), and the internal microstructure was examined via high resolution-transmission electron microscopy (HR-TEM) technique. The Fourier transform infrared (FT-IR) spectra were obtained to identify the chemical interaction and the functional groups present in the material. The shifting of the binding energy, oxidation states, and elemental identification were conducted by X-ray photon spectroscopy (XPS). The MoS 2 nanoflower possesses surface defects, which produce numerous active sites. The MoS 2 nanoflower and nanosheet electrodes demonstrate the high specific capacitance ( C sp ) values of 516 F g −1 and 438 F g −1 , respectively, at a current density of 1 A g −1 . However, the MoS 2 nanoflower shows high C sp due to the large surface area with active edges, making them store more energy in the electrode. It represents the supercapacitor performance of the MoS 2 nanosheets and CTAB assisted MoS 2 nanoflower morphology have been investigated.