RGO nanosheet wrapped β-phase NiCu 2 S nanorods for advanced supercapacitor applications.

Autor: Kandhasamy N; Centre for Nano Science and Nanotechnology, K.S. Rangasamy College of Technology, Tiruchengode, Tamil Nadu, 637215, India., Preethi LK; Centre for Nanoscience and Nanotechnology, Sathyabama Institute of Science and Technology (Deemed to Be University), Chennai, Tamil Nadu, 600119, India., Mani D; Central Instrumentation Laboratory, Vels Institute of Science Technology and Advanced Studies (VISTAS), Chennai, Tamil Nadu, 600117, India., Walczak L; Science & Research Division, PREVAC Sp. Z O.O, 44-362, Rogow, Poland., Mathews T; Surface and Nanoscience Division, Materials Science Group, Indira Gandhi Centre for Atomic Research, HBNI, Kalpakkam, 603102, India., Venkatachalam R; Centre for Nano Science and Nanotechnology, K.S. Rangasamy College of Technology, Tiruchengode, Tamil Nadu, 637215, India. veerajendran@gmail.com.; Department of Physics, Dr. N. G. P. Arts and Science College, Coimbatore, Tamil Nadu, 641048, India. veerajendran@gmail.com.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2023 Feb; Vol. 30 (7), pp. 18546-18562. Date of Electronic Publication: 2022 Oct 10.
DOI: 10.1007/s11356-022-23359-0
Abstrakt: A new integration strategy of transition metal sulfide with carbon-based materials is used to boost its catalytic property and electrochemical performances in supercapacitor application. Herein, crystalline reduced graphene oxide (rGO) wrapped ternary metal sulfide nanorod composites with different rGO ratios are synthesized using hydrothermal technique and are compared for their physical, chemical, and electrochemical performances. It is found that their properties are tuned by the weight ratios of rGO. The electrochemical investigations reveal that β-NiCu 2 S/rGO nanocomposite electrode with 0.15 wt.% of rGO is found to possess maximum specific capacitance of 1583 F g -1 at current density of 15 mA g -1 in aqueous electrolyte medium. The same electrode shows excellent cycling stability with capacitance retention of 89% after 5000 charging/discharging cycles. The reproducibility test performed on NiCu 2 S/rGO nanocomposite electrode with 0.15 wt.% of rGO indicates that it has high reproducible capacitive response and rate capability. Thus, the present work demonstrates that the β-NiCu 2 S/rGO nanocomposite can serve as a potential electrode material for developing supercapacitor energy storage system.
(© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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