A novel high-performance supercapacitor based on the innovated ternary CeO2@CoWO4/N-doped graphene nanocomposites
The present work used multiple steps method to fabrication the three component CeO2@CoWO4/N-doped graphene (CCNG) as active material for supercapacitor application for the first time. For this purpose, firstly CoWO4 nanostructure was synthesized via hydrothermal route, after that CeO2 nanoparticles...
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Elsevier
2025-09-01
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| Series: | Energy Nexus |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772427125001536 |
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| author | Bahareh Arasteh Mehdi Shabani-Nooshabadi Hanieh Ansarinejad |
| author_facet | Bahareh Arasteh Mehdi Shabani-Nooshabadi Hanieh Ansarinejad |
| author_sort | Bahareh Arasteh |
| collection | DOAJ |
| description | The present work used multiple steps method to fabrication the three component CeO2@CoWO4/N-doped graphene (CCNG) as active material for supercapacitor application for the first time. For this purpose, firstly CoWO4 nanostructure was synthesized via hydrothermal route, after that CeO2 nanoparticles were sonochemicaly grown on CoWO4 nanostructures followed by thermal treatment and overall, CCNG nanocomposites were synthesized through the hydrothermal approach in presence of urea as nitrogen source. As-designed materials were physico-chemically characterized by field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), Fourier-transform infrared (FT-IR) spectroscopy and Brunauer-Emmett-Teller (BET) tests. The electrochemical capacitive of as-fabricated nanostructures were investigated by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS) technologies in 3.0 M KOH solution as electrolyte. Also, molar ratio of Ce2+: Co2+ was optimized and CeO2@CoWO4 with molar ratio 1:2 was selected as the best electrode with specific capacitance of 489.27 F g-1 at constant current density of 3 A g-1. Likewise, the mass ratio of N-doped graphene to active materials was optimized and, CCNG-2 nanocomposites illustrated the highest specific capacitance of 698.18 F g−1 at 3 A g−1, which was greater than that of bare CoWO4 (295.64 F g−1) and CeO2 (293.45 F g-1) at this condition. Furthermore, CCNG-2 nanocomposites exhibited superior cycling stability 91.8 % capacity retention after 1000 cycles at sweeping scan rate of 50 mV s-1, while CeO2@CoWO4 possessed 73.2 % capacity retention at 1000th cycles. These interesting results revealed that the CCNG-2 nanocomposites are capable as a active material for usage in high-performance electrochemical supercapacitors. |
| format | Article |
| id | doaj-art-b89a3843e20f4cdfa09e568872e5aa5c |
| institution | Kabale University |
| issn | 2772-4271 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Nexus |
| spelling | doaj-art-b89a3843e20f4cdfa09e568872e5aa5c2025-08-24T05:15:07ZengElsevierEnergy Nexus2772-42712025-09-011910051210.1016/j.nexus.2025.100512A novel high-performance supercapacitor based on the innovated ternary CeO2@CoWO4/N-doped graphene nanocompositesBahareh Arasteh0Mehdi Shabani-Nooshabadi1Hanieh Ansarinejad2Department of Analytical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, IranDepartment of Analytical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran; Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan 87317-51167, Iran; Corresponding author.Department of Analytical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, IranThe present work used multiple steps method to fabrication the three component CeO2@CoWO4/N-doped graphene (CCNG) as active material for supercapacitor application for the first time. For this purpose, firstly CoWO4 nanostructure was synthesized via hydrothermal route, after that CeO2 nanoparticles were sonochemicaly grown on CoWO4 nanostructures followed by thermal treatment and overall, CCNG nanocomposites were synthesized through the hydrothermal approach in presence of urea as nitrogen source. As-designed materials were physico-chemically characterized by field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), Fourier-transform infrared (FT-IR) spectroscopy and Brunauer-Emmett-Teller (BET) tests. The electrochemical capacitive of as-fabricated nanostructures were investigated by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS) technologies in 3.0 M KOH solution as electrolyte. Also, molar ratio of Ce2+: Co2+ was optimized and CeO2@CoWO4 with molar ratio 1:2 was selected as the best electrode with specific capacitance of 489.27 F g-1 at constant current density of 3 A g-1. Likewise, the mass ratio of N-doped graphene to active materials was optimized and, CCNG-2 nanocomposites illustrated the highest specific capacitance of 698.18 F g−1 at 3 A g−1, which was greater than that of bare CoWO4 (295.64 F g−1) and CeO2 (293.45 F g-1) at this condition. Furthermore, CCNG-2 nanocomposites exhibited superior cycling stability 91.8 % capacity retention after 1000 cycles at sweeping scan rate of 50 mV s-1, while CeO2@CoWO4 possessed 73.2 % capacity retention at 1000th cycles. These interesting results revealed that the CCNG-2 nanocomposites are capable as a active material for usage in high-performance electrochemical supercapacitors.http://www.sciencedirect.com/science/article/pii/S2772427125001536Hybrid supercapacitorElectrochemical energy storageCo-W oxideN-doped grapheneCeO2@CoWO4 nanocompositeSpecific capacitance |
| spellingShingle | Bahareh Arasteh Mehdi Shabani-Nooshabadi Hanieh Ansarinejad A novel high-performance supercapacitor based on the innovated ternary CeO2@CoWO4/N-doped graphene nanocomposites Energy Nexus Hybrid supercapacitor Electrochemical energy storage Co-W oxide N-doped graphene CeO2@CoWO4 nanocomposite Specific capacitance |
| title | A novel high-performance supercapacitor based on the innovated ternary CeO2@CoWO4/N-doped graphene nanocomposites |
| title_full | A novel high-performance supercapacitor based on the innovated ternary CeO2@CoWO4/N-doped graphene nanocomposites |
| title_fullStr | A novel high-performance supercapacitor based on the innovated ternary CeO2@CoWO4/N-doped graphene nanocomposites |
| title_full_unstemmed | A novel high-performance supercapacitor based on the innovated ternary CeO2@CoWO4/N-doped graphene nanocomposites |
| title_short | A novel high-performance supercapacitor based on the innovated ternary CeO2@CoWO4/N-doped graphene nanocomposites |
| title_sort | novel high performance supercapacitor based on the innovated ternary ceo2 cowo4 n doped graphene nanocomposites |
| topic | Hybrid supercapacitor Electrochemical energy storage Co-W oxide N-doped graphene CeO2@CoWO4 nanocomposite Specific capacitance |
| url | http://www.sciencedirect.com/science/article/pii/S2772427125001536 |
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