Nanoengineering of NiO/MnO<sub>2</sub>/GO Ternary Composite for Use in High-Energy Storage Asymmetric Supercapacitor and Oxygen Evolution Reaction (OER)
Designing multifunctional nanomaterials for high performing electrochemical energy conversion and storage devices has been very challenging. A number of strategies have been reported to introduce multifunctionality in electrode/catalyst materials including alloying, doping, nanostructuring, composit...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/1/99 |
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| author | Natasha Arshad Muhammad Usman Muhammad Adnan Muhammad Tayyab Ahsan Mah Rukh Rehman Sofia Javed Zeeshan Ali Muhammad Aftab Akram George P. Demopoulos Asif Mahmood |
| author_facet | Natasha Arshad Muhammad Usman Muhammad Adnan Muhammad Tayyab Ahsan Mah Rukh Rehman Sofia Javed Zeeshan Ali Muhammad Aftab Akram George P. Demopoulos Asif Mahmood |
| author_sort | Natasha Arshad |
| collection | DOAJ |
| description | Designing multifunctional nanomaterials for high performing electrochemical energy conversion and storage devices has been very challenging. A number of strategies have been reported to introduce multifunctionality in electrode/catalyst materials including alloying, doping, nanostructuring, compositing, etc. Here, we report the fabrication of a reduced graphene oxide (rGO)-based ternary composite NiO/MnO<sub>2</sub>/rGO (NMGO) having a range of active sites for enhanced electrochemical activity. The resultant sandwich structure consisted of a mesoporous backbone with NiO and MnO<sub>2</sub> nanoparticles encapsulated between successive rGO layers, having different active sites in the form of Ni-, Mn-, and C-based species. The modified structure exhibited high conductivity owing to the presence of rGO, excellent charge storage capacity of 402 F·g<sup>−1</sup> at a current density of 1 A·g<sup>−1</sup>, and stability with a capacitance retention of ~93% after 14,000 cycles. Moreover, the NMGO//MWCNT asymmetric device, assembled with NMGO and multi-wall carbon nanotubes (MWCNTs) as positive and negative electrodes, respectively, exhibited good energy density (28 Wh·kg<sup>−1</sup>), excellent power density (750 W·kg<sup>−1</sup>), and capacitance retention (88%) after 6000 cycles. To evaluate the multifunctionality of the modified nanostructure, the NMGO was also tested for its oxygen evolution reaction (OER) activity. The NMGO delivered a current density of 10 mA·cm<sup>−2</sup> at the potential of 1.59 V versus RHE. These results clearly demonstrate high activity of the modified electrode with strong future potential. |
| first_indexed | 2024-03-09T03:28:54Z |
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| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T03:28:54Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-cb909cc2bcd1466aa08d05f1425a74372023-12-03T14:58:35ZengMDPI AGNanomaterials2079-49912022-12-011319910.3390/nano13010099Nanoengineering of NiO/MnO<sub>2</sub>/GO Ternary Composite for Use in High-Energy Storage Asymmetric Supercapacitor and Oxygen Evolution Reaction (OER)Natasha Arshad0Muhammad Usman1Muhammad Adnan2Muhammad Tayyab Ahsan3Mah Rukh Rehman4Sofia Javed5Zeeshan Ali6Muhammad Aftab Akram7George P. Demopoulos8Asif Mahmood9Department of Physics, Government College Women University, Sialkot 51310, PakistanSchool of Chemical and Materials Engineering, National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, PakistanSchool of Chemical and Materials Engineering, National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, PakistanSchool of Materials Science and Engineering, Peking University, Beijing 100871, ChinaSchool of Chemical and Materials Engineering, National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, PakistanSchool of Chemical and Materials Engineering, National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, PakistanSchool of Chemical and Materials Engineering, National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, PakistanDepartment of Materials Science & Engineering, Pak-Austria Fachhochschule, Institute of Applied Sciences & Technology, Khanpur Road, Mang, Haripur 22650, PakistanMaterials Engineering, McGill University, Montreal, QC H3A 0C5, CanadaCenter for Clean Energy Technology, School of Mathematical and Physical Science, Faculty of Science, University of Technology Sydney, Sydney 2007, AustraliaDesigning multifunctional nanomaterials for high performing electrochemical energy conversion and storage devices has been very challenging. A number of strategies have been reported to introduce multifunctionality in electrode/catalyst materials including alloying, doping, nanostructuring, compositing, etc. Here, we report the fabrication of a reduced graphene oxide (rGO)-based ternary composite NiO/MnO<sub>2</sub>/rGO (NMGO) having a range of active sites for enhanced electrochemical activity. The resultant sandwich structure consisted of a mesoporous backbone with NiO and MnO<sub>2</sub> nanoparticles encapsulated between successive rGO layers, having different active sites in the form of Ni-, Mn-, and C-based species. The modified structure exhibited high conductivity owing to the presence of rGO, excellent charge storage capacity of 402 F·g<sup>−1</sup> at a current density of 1 A·g<sup>−1</sup>, and stability with a capacitance retention of ~93% after 14,000 cycles. Moreover, the NMGO//MWCNT asymmetric device, assembled with NMGO and multi-wall carbon nanotubes (MWCNTs) as positive and negative electrodes, respectively, exhibited good energy density (28 Wh·kg<sup>−1</sup>), excellent power density (750 W·kg<sup>−1</sup>), and capacitance retention (88%) after 6000 cycles. To evaluate the multifunctionality of the modified nanostructure, the NMGO was also tested for its oxygen evolution reaction (OER) activity. The NMGO delivered a current density of 10 mA·cm<sup>−2</sup> at the potential of 1.59 V versus RHE. These results clearly demonstrate high activity of the modified electrode with strong future potential.https://www.mdpi.com/2079-4991/13/1/99electrochemicalenergygraphene oxideMnO<sub>2</sub>NiOsupercapacitor |
| spellingShingle | Natasha Arshad Muhammad Usman Muhammad Adnan Muhammad Tayyab Ahsan Mah Rukh Rehman Sofia Javed Zeeshan Ali Muhammad Aftab Akram George P. Demopoulos Asif Mahmood Nanoengineering of NiO/MnO<sub>2</sub>/GO Ternary Composite for Use in High-Energy Storage Asymmetric Supercapacitor and Oxygen Evolution Reaction (OER) Nanomaterials electrochemical energy graphene oxide MnO<sub>2</sub> NiO supercapacitor |
| title | Nanoengineering of NiO/MnO<sub>2</sub>/GO Ternary Composite for Use in High-Energy Storage Asymmetric Supercapacitor and Oxygen Evolution Reaction (OER) |
| title_full | Nanoengineering of NiO/MnO<sub>2</sub>/GO Ternary Composite for Use in High-Energy Storage Asymmetric Supercapacitor and Oxygen Evolution Reaction (OER) |
| title_fullStr | Nanoengineering of NiO/MnO<sub>2</sub>/GO Ternary Composite for Use in High-Energy Storage Asymmetric Supercapacitor and Oxygen Evolution Reaction (OER) |
| title_full_unstemmed | Nanoengineering of NiO/MnO<sub>2</sub>/GO Ternary Composite for Use in High-Energy Storage Asymmetric Supercapacitor and Oxygen Evolution Reaction (OER) |
| title_short | Nanoengineering of NiO/MnO<sub>2</sub>/GO Ternary Composite for Use in High-Energy Storage Asymmetric Supercapacitor and Oxygen Evolution Reaction (OER) |
| title_sort | nanoengineering of nio mno sub 2 sub go ternary composite for use in high energy storage asymmetric supercapacitor and oxygen evolution reaction oer |
| topic | electrochemical energy graphene oxide MnO<sub>2</sub> NiO supercapacitor |
| url | https://www.mdpi.com/2079-4991/13/1/99 |
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