Elevating Supercapacitor Performance of Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> Nanocomposites Fabricated via the Hydrothermal Method
The hydrothermal method has been utilized to synthesize graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) polymers and cobalt oxide composites effectively. The weight percentage of g-C<sub>3</sub>N<sub>4</sub> nanoparticles influenced the electro...
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MDPI AG
2024-03-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/15/3/414 |
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| author | Manesh A. Yewale Vineet Kumar Aviraj M. Teli Sonali A. Beknalkar Umesh T. Nakate Dong-Kil Shin |
| author_facet | Manesh A. Yewale Vineet Kumar Aviraj M. Teli Sonali A. Beknalkar Umesh T. Nakate Dong-Kil Shin |
| author_sort | Manesh A. Yewale |
| collection | DOAJ |
| description | The hydrothermal method has been utilized to synthesize graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) polymers and cobalt oxide composites effectively. The weight percentage of g-C<sub>3</sub>N<sub>4</sub> nanoparticles influenced the electrochemical performance of the Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> composite. In an aqueous electrolyte, the Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> composite electrode, produced with 150 mg of g-C<sub>3</sub>N<sub>4</sub> nanoparticles, revealed remarkable electrochemical performance. With an increase in the weight percentage of g-C<sub>3</sub>N<sub>4</sub> nanoparticles, the capacitive contribution of the Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> composite electrode increased. The Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub>-150 mg composite electrode shows a specific capacitance of 198 F/g. The optimized electrode, activated carbon, and polyvinyl alcohol gel with potassium hydroxide were used to develop an asymmetric supercapacitor. At a current density of 5 mA/cm<sup>2</sup>, the asymmetric supercapacitor demonstrated exceptional energy storage capacity with remarkable energy density and power density. The device retained great capacity over 6k galvanostatic charge–discharge (GCD) cycles, with no rise in series resistance following cyclic stability. The columbic efficiency of the asymmetric supercapacitor was likewise high. |
| first_indexed | 2024-04-24T18:00:35Z |
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| id | doaj.art-8693b0e3bb0246da9281e601b21a900a |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-04-24T18:00:35Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-8693b0e3bb0246da9281e601b21a900a2024-03-27T13:55:22ZengMDPI AGMicromachines2072-666X2024-03-0115341410.3390/mi15030414Elevating Supercapacitor Performance of Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> Nanocomposites Fabricated via the Hydrothermal MethodManesh A. Yewale0Vineet Kumar1Aviraj M. Teli2Sonali A. Beknalkar3Umesh T. Nakate4Dong-Kil Shin5School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Republic of KoreaSchool of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Republic of KoreaDivision of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of KoreaDivision of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of KoreaDepartment of Polymer-Nano Science and Technology, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si 54896, Republic of KoreaSchool of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Republic of KoreaThe hydrothermal method has been utilized to synthesize graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) polymers and cobalt oxide composites effectively. The weight percentage of g-C<sub>3</sub>N<sub>4</sub> nanoparticles influenced the electrochemical performance of the Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> composite. In an aqueous electrolyte, the Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> composite electrode, produced with 150 mg of g-C<sub>3</sub>N<sub>4</sub> nanoparticles, revealed remarkable electrochemical performance. With an increase in the weight percentage of g-C<sub>3</sub>N<sub>4</sub> nanoparticles, the capacitive contribution of the Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> composite electrode increased. The Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub>-150 mg composite electrode shows a specific capacitance of 198 F/g. The optimized electrode, activated carbon, and polyvinyl alcohol gel with potassium hydroxide were used to develop an asymmetric supercapacitor. At a current density of 5 mA/cm<sup>2</sup>, the asymmetric supercapacitor demonstrated exceptional energy storage capacity with remarkable energy density and power density. The device retained great capacity over 6k galvanostatic charge–discharge (GCD) cycles, with no rise in series resistance following cyclic stability. The columbic efficiency of the asymmetric supercapacitor was likewise high.https://www.mdpi.com/2072-666X/15/3/414graphic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>)Co<sub>3</sub>O<sub>4</sub> nanoparticlessupercapacitor |
| spellingShingle | Manesh A. Yewale Vineet Kumar Aviraj M. Teli Sonali A. Beknalkar Umesh T. Nakate Dong-Kil Shin Elevating Supercapacitor Performance of Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> Nanocomposites Fabricated via the Hydrothermal Method Micromachines graphic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) Co<sub>3</sub>O<sub>4</sub> nanoparticles supercapacitor |
| title | Elevating Supercapacitor Performance of Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> Nanocomposites Fabricated via the Hydrothermal Method |
| title_full | Elevating Supercapacitor Performance of Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> Nanocomposites Fabricated via the Hydrothermal Method |
| title_fullStr | Elevating Supercapacitor Performance of Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> Nanocomposites Fabricated via the Hydrothermal Method |
| title_full_unstemmed | Elevating Supercapacitor Performance of Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> Nanocomposites Fabricated via the Hydrothermal Method |
| title_short | Elevating Supercapacitor Performance of Co<sub>3</sub>O<sub>4</sub>-g-C<sub>3</sub>N<sub>4</sub> Nanocomposites Fabricated via the Hydrothermal Method |
| title_sort | elevating supercapacitor performance of co sub 3 sub o sub 4 sub g c sub 3 sub n sub 4 sub nanocomposites fabricated via the hydrothermal method |
| topic | graphic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) Co<sub>3</sub>O<sub>4</sub> nanoparticles supercapacitor |
| url | https://www.mdpi.com/2072-666X/15/3/414 |
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