Hydrothermal synthesis of hierarchical microstructure tungsten oxide/carbon nanocomposite for supercapacitor application
Abstract A hierarchical nanocomposite of carbon microspheres decorated with tungsten oxide (WO3) nanocrystals resulted from the hydrothermal treatment of a precursor solution containing glucose and tungstic acid. The dehydration of glucose molecules formed oligosaccharides, which consequently carbon...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-12-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-48958-w |
| _version_ | 1827590601254633472 |
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| author | Shanna Marie M. Alonzo John Bentley Salil Desai Bishnu Prasad Bastakoti |
| author_facet | Shanna Marie M. Alonzo John Bentley Salil Desai Bishnu Prasad Bastakoti |
| author_sort | Shanna Marie M. Alonzo |
| collection | DOAJ |
| description | Abstract A hierarchical nanocomposite of carbon microspheres decorated with tungsten oxide (WO3) nanocrystals resulted from the hydrothermal treatment of a precursor solution containing glucose and tungstic acid. The dehydration of glucose molecules formed oligosaccharides, which consequently carbonized, turning into carbon microspheres. The carbon microspheres then acted as a spherical nucleus onto which WO3 nanocrystals grew via heterogeneous nucleation. The reaction product showed a phase junction of orthorhombic and monoclinic WO3, which transitioned to mix-phase of tetragonal and monoclinic WO3 after a subsequent heat treatment at 600 °C in an inert condition. The electrochemical tests showed that incorporating WO3 onto the carbon (WO3/C) resulted in a three-fold increase in the specific capacitance compared to WO3 alone and a high coulombic and energy efficiencies of 98.2% and 92.8%, respectively. The nanocomposite exhibited supercapacitance with both Faradaic and non-Faradaic charge storage mechanisms. Electrochemical impedance spectroscopy showed a lower charge transfer resistance for the composite at Rct = 11.7Ω. |
| first_indexed | 2024-03-09T01:19:07Z |
| format | Article |
| id | doaj.art-fd059484a28f4a5ba54932efde2d8d0d |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-09T01:19:07Z |
| publishDate | 2023-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-fd059484a28f4a5ba54932efde2d8d0d2023-12-10T12:19:05ZengNature PortfolioScientific Reports2045-23222023-12-0113111110.1038/s41598-023-48958-wHydrothermal synthesis of hierarchical microstructure tungsten oxide/carbon nanocomposite for supercapacitor applicationShanna Marie M. Alonzo0John Bentley1Salil Desai2Bishnu Prasad Bastakoti3Department of Chemistry, North Carolina A&T State UniversityDepartment of Chemistry, North Carolina A&T State UniversityDepartment of Industrial and System Engineering, North Carolina A&T State UniversityDepartment of Chemistry, North Carolina A&T State UniversityAbstract A hierarchical nanocomposite of carbon microspheres decorated with tungsten oxide (WO3) nanocrystals resulted from the hydrothermal treatment of a precursor solution containing glucose and tungstic acid. The dehydration of glucose molecules formed oligosaccharides, which consequently carbonized, turning into carbon microspheres. The carbon microspheres then acted as a spherical nucleus onto which WO3 nanocrystals grew via heterogeneous nucleation. The reaction product showed a phase junction of orthorhombic and monoclinic WO3, which transitioned to mix-phase of tetragonal and monoclinic WO3 after a subsequent heat treatment at 600 °C in an inert condition. The electrochemical tests showed that incorporating WO3 onto the carbon (WO3/C) resulted in a three-fold increase in the specific capacitance compared to WO3 alone and a high coulombic and energy efficiencies of 98.2% and 92.8%, respectively. The nanocomposite exhibited supercapacitance with both Faradaic and non-Faradaic charge storage mechanisms. Electrochemical impedance spectroscopy showed a lower charge transfer resistance for the composite at Rct = 11.7Ω.https://doi.org/10.1038/s41598-023-48958-w |
| spellingShingle | Shanna Marie M. Alonzo John Bentley Salil Desai Bishnu Prasad Bastakoti Hydrothermal synthesis of hierarchical microstructure tungsten oxide/carbon nanocomposite for supercapacitor application Scientific Reports |
| title | Hydrothermal synthesis of hierarchical microstructure tungsten oxide/carbon nanocomposite for supercapacitor application |
| title_full | Hydrothermal synthesis of hierarchical microstructure tungsten oxide/carbon nanocomposite for supercapacitor application |
| title_fullStr | Hydrothermal synthesis of hierarchical microstructure tungsten oxide/carbon nanocomposite for supercapacitor application |
| title_full_unstemmed | Hydrothermal synthesis of hierarchical microstructure tungsten oxide/carbon nanocomposite for supercapacitor application |
| title_short | Hydrothermal synthesis of hierarchical microstructure tungsten oxide/carbon nanocomposite for supercapacitor application |
| title_sort | hydrothermal synthesis of hierarchical microstructure tungsten oxide carbon nanocomposite for supercapacitor application |
| url | https://doi.org/10.1038/s41598-023-48958-w |
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