Academic Journal
Ni 3 V 2 O 8 Marigold Structures with rGO Coating for Enhanced Supercapacitor Performance
| العنوان: | Ni 3 V 2 O 8 Marigold Structures with rGO Coating for Enhanced Supercapacitor Performance |
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| المؤلفون: | Manesh A. Yewale, Pritam J. Morankar, Vineet Kumar, Aviraj M. Teli., Sonali A. Beknalkar, Suprimkumar D. Dhas, Dong-Kil Shin |
| المصدر: | Micromachines, Vol 15, Iss 7, p 930 (2024) |
| بيانات النشر: | MDPI AG |
| سنة النشر: | 2024 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | Ni 3 V 2 O 8, Ni 3 V 2 O 8 -rGO nanoparticles, hydrothermal synthesis, FESEM, TEM, XPS, Mechanical engineering and machinery, TJ1-1570 |
| الوصف: | In this work, Ni 3 V 2 O 8 (NVO) and Ni 3 V 2 O 8 -reduced graphene oxide (NVO-rGO) are synthesized hydrothermally, and their extensive structural, morphological, and electrochemical characterizations follow subsequently. The synthetic materials’ crystalline structure was confirmed by X-ray diffraction (XRD), and its unique marigold-like morphology was observed by field emission scanning electron microscopy (FESEM). The chemical states of the elements were investigated via X-ray photoelectron spectroscopy (XPS). Electrochemical impedance spectroscopy (EIS), Galvanostatic charge–discharge (GCD), and cyclic voltammetry (CV) were used to assess the electrochemical performance. A specific capacitance of 132 F/g, an energy density of 5.04 Wh/kg, and a power density of 187 W/kg were demonstrated by Ni 3 V 2 O 8 -rGO. Key electrochemical characteristics were b = 0.67; a transfer coefficient of 0.52; a standard rate constant of 6.07 × 10 −5 cm/S; a diffusion coefficient of 5.27 × 10 −8 cm 2 /S; and a series resistance of 1.65 Ω. By employing Ni 3 V 2 O 8 -rGO and activated carbon, an asymmetric supercapacitor with a specific capacitance of 7.85 F/g, an energy density of 3.52 Wh/kg, and a power density of 225 W/kg was achieved. The series resistance increased from 4.27 Ω to 6.63 Ω during cyclic stability tests, which showed 99% columbic efficiency and 87% energy retention. The potential of Ni 3 V 2 O 8 -rGO as a high-performance electrode material for supercapacitors is highlighted by these findings. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2072-666X |
| Relation: | https://www.mdpi.com/2072-666X/15/7/930; https://doaj.org/toc/2072-666X; https://doaj.org/article/76af797a6a8844b890814acc3e073e31 |
| DOI: | 10.3390/mi15070930 |
| الاتاحة: | https://doi.org/10.3390/mi15070930 https://doaj.org/article/76af797a6a8844b890814acc3e073e31 |
| رقم الانضمام: | edsbas.21289A7F |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 2072666X |
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| DOI: | 10.3390/mi15070930 |