Ternary Nanohybrid of Ni<sub>3</sub>S<sub>2</sub>/CoMoS<sub>4</sub>/MnO<sub>2</sub> on Nickel Foam for Aqueous and Solid-State High-Performance Supercapacitors
To overcome the issues related to supercapacitor (SC) electrodes, such as high cost, low specific capacitance (<i>C<sub>s</sub></i>), low energy density (ED), requirements for expensive binder, etc., binderless electrodes are highly desirable. Here, a new ternary nanohybrid i...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-06-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/12/11/1945 |
| _version_ | 1797492298440769536 |
|---|---|
| author | Sumanta Sahoo Ganesh Dhakal Woo Kyoung Kim Jae-Jin Shim |
| author_facet | Sumanta Sahoo Ganesh Dhakal Woo Kyoung Kim Jae-Jin Shim |
| author_sort | Sumanta Sahoo |
| collection | DOAJ |
| description | To overcome the issues related to supercapacitor (SC) electrodes, such as high cost, low specific capacitance (<i>C<sub>s</sub></i>), low energy density (ED), requirements for expensive binder, etc., binderless electrodes are highly desirable. Here, a new ternary nanohybrid is presented as a binder-free SC electrode based on Ni<sub>3</sub>S<sub>2</sub>, CoMoS<sub>4</sub>, and MnO<sub>2</sub>. A facile two-step hydrothermal route, followed by a short thermal annealing process, is developed to grow amorphous polyhedral structured CoMoS<sub>4</sub> and further wrap MnO<sub>2</sub> nanowires on Ni foam. This rationally designed binder-free electrode exhibited the highest <i>C<sub>s</sub></i> of 2021 F g<sup>−1</sup> (specific capacity of 883.8 C g<sup>−1</sup> or 245.5 mAh g<sup>−1</sup>) at a current density of 1 A g<sup>−1</sup> in 1 M KOH electrolyte with a highly porous surface morphology. This electrode material exhibited excellent cycling stability (90% capacitance retention after 4000 cycles) due to the synergistic contribution of individual components and advanced surface properties. Furthermore, an aqueous binder-free asymmetric SC based on this ternary composite exhibited an ED of 20.7 Wh kg<sup>−1</sup>, whereas a solid-state asymmetric SC achieved an ED of 13.8 Wh kg<sup>−1</sup>. This nanohybrid can be considered a promising binder-free electrode for both aqueous and solid-state asymmetric SCs with these remarkable electrochemical properties. |
| first_indexed | 2024-03-10T01:00:43Z |
| format | Article |
| id | doaj.art-7e9db3bbe45e4e4cbb24b91161eeaa42 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T01:00:43Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-7e9db3bbe45e4e4cbb24b91161eeaa422023-11-23T14:34:45ZengMDPI AGNanomaterials2079-49912022-06-011211194510.3390/nano12111945Ternary Nanohybrid of Ni<sub>3</sub>S<sub>2</sub>/CoMoS<sub>4</sub>/MnO<sub>2</sub> on Nickel Foam for Aqueous and Solid-State High-Performance SupercapacitorsSumanta Sahoo0Ganesh Dhakal1Woo Kyoung Kim2Jae-Jin Shim3School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Gyeongbuk, KoreaSchool of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Gyeongbuk, KoreaSchool of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Gyeongbuk, KoreaSchool of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Gyeongbuk, KoreaTo overcome the issues related to supercapacitor (SC) electrodes, such as high cost, low specific capacitance (<i>C<sub>s</sub></i>), low energy density (ED), requirements for expensive binder, etc., binderless electrodes are highly desirable. Here, a new ternary nanohybrid is presented as a binder-free SC electrode based on Ni<sub>3</sub>S<sub>2</sub>, CoMoS<sub>4</sub>, and MnO<sub>2</sub>. A facile two-step hydrothermal route, followed by a short thermal annealing process, is developed to grow amorphous polyhedral structured CoMoS<sub>4</sub> and further wrap MnO<sub>2</sub> nanowires on Ni foam. This rationally designed binder-free electrode exhibited the highest <i>C<sub>s</sub></i> of 2021 F g<sup>−1</sup> (specific capacity of 883.8 C g<sup>−1</sup> or 245.5 mAh g<sup>−1</sup>) at a current density of 1 A g<sup>−1</sup> in 1 M KOH electrolyte with a highly porous surface morphology. This electrode material exhibited excellent cycling stability (90% capacitance retention after 4000 cycles) due to the synergistic contribution of individual components and advanced surface properties. Furthermore, an aqueous binder-free asymmetric SC based on this ternary composite exhibited an ED of 20.7 Wh kg<sup>−1</sup>, whereas a solid-state asymmetric SC achieved an ED of 13.8 Wh kg<sup>−1</sup>. This nanohybrid can be considered a promising binder-free electrode for both aqueous and solid-state asymmetric SCs with these remarkable electrochemical properties.https://www.mdpi.com/2079-4991/12/11/1945supercapacitorCoMoS<sub>4</sub>MnO<sub>2</sub>Ni<sub>3</sub>S<sub>2</sub>binder-freenanohybrid |
| spellingShingle | Sumanta Sahoo Ganesh Dhakal Woo Kyoung Kim Jae-Jin Shim Ternary Nanohybrid of Ni<sub>3</sub>S<sub>2</sub>/CoMoS<sub>4</sub>/MnO<sub>2</sub> on Nickel Foam for Aqueous and Solid-State High-Performance Supercapacitors Nanomaterials supercapacitor CoMoS<sub>4</sub> MnO<sub>2</sub> Ni<sub>3</sub>S<sub>2</sub> binder-free nanohybrid |
| title | Ternary Nanohybrid of Ni<sub>3</sub>S<sub>2</sub>/CoMoS<sub>4</sub>/MnO<sub>2</sub> on Nickel Foam for Aqueous and Solid-State High-Performance Supercapacitors |
| title_full | Ternary Nanohybrid of Ni<sub>3</sub>S<sub>2</sub>/CoMoS<sub>4</sub>/MnO<sub>2</sub> on Nickel Foam for Aqueous and Solid-State High-Performance Supercapacitors |
| title_fullStr | Ternary Nanohybrid of Ni<sub>3</sub>S<sub>2</sub>/CoMoS<sub>4</sub>/MnO<sub>2</sub> on Nickel Foam for Aqueous and Solid-State High-Performance Supercapacitors |
| title_full_unstemmed | Ternary Nanohybrid of Ni<sub>3</sub>S<sub>2</sub>/CoMoS<sub>4</sub>/MnO<sub>2</sub> on Nickel Foam for Aqueous and Solid-State High-Performance Supercapacitors |
| title_short | Ternary Nanohybrid of Ni<sub>3</sub>S<sub>2</sub>/CoMoS<sub>4</sub>/MnO<sub>2</sub> on Nickel Foam for Aqueous and Solid-State High-Performance Supercapacitors |
| title_sort | ternary nanohybrid of ni sub 3 sub s sub 2 sub comos sub 4 sub mno sub 2 sub on nickel foam for aqueous and solid state high performance supercapacitors |
| topic | supercapacitor CoMoS<sub>4</sub> MnO<sub>2</sub> Ni<sub>3</sub>S<sub>2</sub> binder-free nanohybrid |
| url | https://www.mdpi.com/2079-4991/12/11/1945 |
| work_keys_str_mv | AT sumantasahoo ternarynanohybridofnisub3subssub2subcomossub4submnosub2subonnickelfoamforaqueousandsolidstatehighperformancesupercapacitors AT ganeshdhakal ternarynanohybridofnisub3subssub2subcomossub4submnosub2subonnickelfoamforaqueousandsolidstatehighperformancesupercapacitors AT wookyoungkim ternarynanohybridofnisub3subssub2subcomossub4submnosub2subonnickelfoamforaqueousandsolidstatehighperformancesupercapacitors AT jaejinshim ternarynanohybridofnisub3subssub2subcomossub4submnosub2subonnickelfoamforaqueousandsolidstatehighperformancesupercapacitors |