Three-Dimensional Ternary rGO/VS<sub>2</sub>/WS<sub>2</sub> Composite Hydrogel for Supercapacitor Applications
In recent years, the development of lightweight electrode materials with excellent performance (energy density versus power density) has increased the number of uses for supercapacitors. Creating three-dimensional skeletal network structures with excellent specific capacitance and high energy densit...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Inorganics |
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| Online Access: | https://www.mdpi.com/2304-6740/10/12/229 |
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| author | Sahil S. Magdum Sadhasivam Thangarasu Tae Hwan Oh |
| author_facet | Sahil S. Magdum Sadhasivam Thangarasu Tae Hwan Oh |
| author_sort | Sahil S. Magdum |
| collection | DOAJ |
| description | In recent years, the development of lightweight electrode materials with excellent performance (energy density versus power density) has increased the number of uses for supercapacitors. Creating three-dimensional skeletal network structures with excellent specific capacitance and high energy density is still challenging. This study utilized a straightforward one-pot hydrothermal technique to construct a supercapacitor based on hydrogel 3D skeletal networks comprising rGO nanosheets with VS<sub>2</sub>/WS<sub>2</sub> nanoparticles. The rGO appeared as flakes and layers, interconnected in nature, allowing for more ion transport pathways and a larger active surface area for EDLC performance. The heterostructured VS<sub>2</sub> and WS<sub>2</sub> nanoparticles were homogeneously anchored to the rGO layers and were porous in the hydrogel structure. The functioning rGO, rGO-VS<sub>2</sub>, and rGO-VS<sub>2</sub>-WS<sub>2</sub> composite hydrogel electrodes were created without a binder on the Ni foam current collector using a hydraulic press. The rGO-VS<sub>2</sub>-WS<sub>2</sub> composite hydrogel electrode showed excellent supercapacitor performance of 220 F g<sup>−1</sup> at 1 A g<sup>−1</sup> in 3M KOH electrolyte, which was more than those of the GO (158 F g<sup>−1</sup>) and rGO-VS<sub>2</sub> (199 F g<sup>−1</sup>) hydrogels under similar conditions. Hydrogel electrodes made of rGO-VS<sub>2</sub>-WS<sub>2</sub> had a power density of 355 Whkg<sup>−1</sup> and a high energy density of 30.55 Whkg<sup>−1</sup>. It maintained a high energy density of up to 21.11 W/kg<sup>−1</sup>, even at a high power density of 3454 W/kg<sup>−1</sup>. Given the 3D shape and the excellent surface properties of rGO nanosheets with VS<sub>2</sub> and WS<sub>2</sub> nanoparticles as the hydrogel, this electrode has essential properties that make it a good choice for making high-performance capacitors. |
| first_indexed | 2024-03-09T16:17:37Z |
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| id | doaj.art-48fe5a2ff67d46308251dacf49b667ea |
| institution | Directory Open Access Journal |
| issn | 2304-6740 |
| language | English |
| last_indexed | 2024-03-09T16:17:37Z |
| publishDate | 2022-11-01 |
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| series | Inorganics |
| spelling | doaj.art-48fe5a2ff67d46308251dacf49b667ea2023-11-24T15:38:06ZengMDPI AGInorganics2304-67402022-11-01101222910.3390/inorganics10120229Three-Dimensional Ternary rGO/VS<sub>2</sub>/WS<sub>2</sub> Composite Hydrogel for Supercapacitor ApplicationsSahil S. Magdum0Sadhasivam Thangarasu1Tae Hwan Oh2School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of KoreaSchool of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of KoreaSchool of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of KoreaIn recent years, the development of lightweight electrode materials with excellent performance (energy density versus power density) has increased the number of uses for supercapacitors. Creating three-dimensional skeletal network structures with excellent specific capacitance and high energy density is still challenging. This study utilized a straightforward one-pot hydrothermal technique to construct a supercapacitor based on hydrogel 3D skeletal networks comprising rGO nanosheets with VS<sub>2</sub>/WS<sub>2</sub> nanoparticles. The rGO appeared as flakes and layers, interconnected in nature, allowing for more ion transport pathways and a larger active surface area for EDLC performance. The heterostructured VS<sub>2</sub> and WS<sub>2</sub> nanoparticles were homogeneously anchored to the rGO layers and were porous in the hydrogel structure. The functioning rGO, rGO-VS<sub>2</sub>, and rGO-VS<sub>2</sub>-WS<sub>2</sub> composite hydrogel electrodes were created without a binder on the Ni foam current collector using a hydraulic press. The rGO-VS<sub>2</sub>-WS<sub>2</sub> composite hydrogel electrode showed excellent supercapacitor performance of 220 F g<sup>−1</sup> at 1 A g<sup>−1</sup> in 3M KOH electrolyte, which was more than those of the GO (158 F g<sup>−1</sup>) and rGO-VS<sub>2</sub> (199 F g<sup>−1</sup>) hydrogels under similar conditions. Hydrogel electrodes made of rGO-VS<sub>2</sub>-WS<sub>2</sub> had a power density of 355 Whkg<sup>−1</sup> and a high energy density of 30.55 Whkg<sup>−1</sup>. It maintained a high energy density of up to 21.11 W/kg<sup>−1</sup>, even at a high power density of 3454 W/kg<sup>−1</sup>. Given the 3D shape and the excellent surface properties of rGO nanosheets with VS<sub>2</sub> and WS<sub>2</sub> nanoparticles as the hydrogel, this electrode has essential properties that make it a good choice for making high-performance capacitors.https://www.mdpi.com/2304-6740/10/12/229reduced graphene oxidevanadium disulfidetungsten disulfidehydrogelbinder-free electrodesupercapacitor |
| spellingShingle | Sahil S. Magdum Sadhasivam Thangarasu Tae Hwan Oh Three-Dimensional Ternary rGO/VS<sub>2</sub>/WS<sub>2</sub> Composite Hydrogel for Supercapacitor Applications Inorganics reduced graphene oxide vanadium disulfide tungsten disulfide hydrogel binder-free electrode supercapacitor |
| title | Three-Dimensional Ternary rGO/VS<sub>2</sub>/WS<sub>2</sub> Composite Hydrogel for Supercapacitor Applications |
| title_full | Three-Dimensional Ternary rGO/VS<sub>2</sub>/WS<sub>2</sub> Composite Hydrogel for Supercapacitor Applications |
| title_fullStr | Three-Dimensional Ternary rGO/VS<sub>2</sub>/WS<sub>2</sub> Composite Hydrogel for Supercapacitor Applications |
| title_full_unstemmed | Three-Dimensional Ternary rGO/VS<sub>2</sub>/WS<sub>2</sub> Composite Hydrogel for Supercapacitor Applications |
| title_short | Three-Dimensional Ternary rGO/VS<sub>2</sub>/WS<sub>2</sub> Composite Hydrogel for Supercapacitor Applications |
| title_sort | three dimensional ternary rgo vs sub 2 sub ws sub 2 sub composite hydrogel for supercapacitor applications |
| topic | reduced graphene oxide vanadium disulfide tungsten disulfide hydrogel binder-free electrode supercapacitor |
| url | https://www.mdpi.com/2304-6740/10/12/229 |
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