Fabrication of 3D binder-free graphene NiO electrode for highly stable supercapattery
Abstract Electrochemical stability of energy storage devices is one of their major concerns. Polymeric binders are generally used to enhance the stability of the electrode, but the electrochemical performance of the device is compromised due to the poor conductivity of the binders. Herein, 3D binder...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2020-07-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-020-68067-2 |
| _version_ | 1831833821255827456 |
|---|---|
| author | Elochukwu Stephen Agudosi Ezzat Chan Abdullah Arshid Numan Nabisab Mujawar Mubarak Siti Rahmah Aid Raúl Benages-Vilau Pedro Gómez-Romero Mohammad Khalid Nurizan Omar |
| author_facet | Elochukwu Stephen Agudosi Ezzat Chan Abdullah Arshid Numan Nabisab Mujawar Mubarak Siti Rahmah Aid Raúl Benages-Vilau Pedro Gómez-Romero Mohammad Khalid Nurizan Omar |
| author_sort | Elochukwu Stephen Agudosi |
| collection | DOAJ |
| description | Abstract Electrochemical stability of energy storage devices is one of their major concerns. Polymeric binders are generally used to enhance the stability of the electrode, but the electrochemical performance of the device is compromised due to the poor conductivity of the binders. Herein, 3D binder-free electrode based on nickel oxide deposited on graphene (G-NiO) was fabricated by a simple two-step method. First, graphene was deposited on nickel foam via atmospheric pressure chemical vapour deposition followed by electrodeposition of NiO. The structural and morphological analyses of the fabricated G-NiO electrode were conducted through Raman spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and energy dispersive X-ray spectroscopy (EDS). XRD and Raman results confirmed the successful growth of high-quality graphene on nickel foam. FESEM images revealed the sheet and urchin-like morphology of the graphene and NiO, respectively. The electrochemical performance of the fabricated electrode was evaluated through cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS) in aqueous solution at room temperature. The G-NiO binder-free electrode exhibited a specific capacity of ≈ 243 C g−1 at 3 mV s−1 in a three-electrode cell. A two-electrode configuration of G-NiO//activated charcoal was fabricated to form a hybrid device (supercapattery) that operated in a stable potential window of 1.4 V. The energy density and power density of the asymmetric device measured at a current density of 0.2 A g−1 were estimated to be 47.3 W h kg−1 and 140 W kg−1, respectively. Additionally, the fabricated supercapattery showed high cyclic stability with 98.7% retention of specific capacity after 5,000 cycles. Thus, the proposed fabrication technique is highly suitable for large scale production of highly stable and binder-free electrodes for electrochemical energy storage devices. |
| first_indexed | 2024-12-23T04:01:46Z |
| format | Article |
| id | doaj.art-f69c897993ed4425aa380179bdbe4276 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-23T04:01:46Z |
| publishDate | 2020-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-f69c897993ed4425aa380179bdbe42762022-12-21T18:00:44ZengNature PortfolioScientific Reports2045-23222020-07-0110111310.1038/s41598-020-68067-2Fabrication of 3D binder-free graphene NiO electrode for highly stable supercapatteryElochukwu Stephen Agudosi0Ezzat Chan Abdullah1Arshid Numan2Nabisab Mujawar Mubarak3Siti Rahmah Aid4Raúl Benages-Vilau5Pedro Gómez-Romero6Mohammad Khalid7Nurizan Omar8Department of Chemical Process Engineering, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia (UTM)Department of Chemical Process Engineering, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia (UTM)State Key Laboratory of ASIC and System, SIST, Fudan UniversityDepartment of Chemical Engineering, Faculty of Engineering and Science, Curtin UniversityDepartment of Electronic Systems Engineering, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia (UTM)Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and TechnologyCatalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and TechnologyGraphene & Advanced 2D Materials Research Group (GAMRG), School of Science and Technology, Sunway UniversityDepartment of Chemical Process Engineering, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia (UTM)Abstract Electrochemical stability of energy storage devices is one of their major concerns. Polymeric binders are generally used to enhance the stability of the electrode, but the electrochemical performance of the device is compromised due to the poor conductivity of the binders. Herein, 3D binder-free electrode based on nickel oxide deposited on graphene (G-NiO) was fabricated by a simple two-step method. First, graphene was deposited on nickel foam via atmospheric pressure chemical vapour deposition followed by electrodeposition of NiO. The structural and morphological analyses of the fabricated G-NiO electrode were conducted through Raman spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and energy dispersive X-ray spectroscopy (EDS). XRD and Raman results confirmed the successful growth of high-quality graphene on nickel foam. FESEM images revealed the sheet and urchin-like morphology of the graphene and NiO, respectively. The electrochemical performance of the fabricated electrode was evaluated through cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS) in aqueous solution at room temperature. The G-NiO binder-free electrode exhibited a specific capacity of ≈ 243 C g−1 at 3 mV s−1 in a three-electrode cell. A two-electrode configuration of G-NiO//activated charcoal was fabricated to form a hybrid device (supercapattery) that operated in a stable potential window of 1.4 V. The energy density and power density of the asymmetric device measured at a current density of 0.2 A g−1 were estimated to be 47.3 W h kg−1 and 140 W kg−1, respectively. Additionally, the fabricated supercapattery showed high cyclic stability with 98.7% retention of specific capacity after 5,000 cycles. Thus, the proposed fabrication technique is highly suitable for large scale production of highly stable and binder-free electrodes for electrochemical energy storage devices.https://doi.org/10.1038/s41598-020-68067-2 |
| spellingShingle | Elochukwu Stephen Agudosi Ezzat Chan Abdullah Arshid Numan Nabisab Mujawar Mubarak Siti Rahmah Aid Raúl Benages-Vilau Pedro Gómez-Romero Mohammad Khalid Nurizan Omar Fabrication of 3D binder-free graphene NiO electrode for highly stable supercapattery Scientific Reports |
| title | Fabrication of 3D binder-free graphene NiO electrode for highly stable supercapattery |
| title_full | Fabrication of 3D binder-free graphene NiO electrode for highly stable supercapattery |
| title_fullStr | Fabrication of 3D binder-free graphene NiO electrode for highly stable supercapattery |
| title_full_unstemmed | Fabrication of 3D binder-free graphene NiO electrode for highly stable supercapattery |
| title_short | Fabrication of 3D binder-free graphene NiO electrode for highly stable supercapattery |
| title_sort | fabrication of 3d binder free graphene nio electrode for highly stable supercapattery |
| url | https://doi.org/10.1038/s41598-020-68067-2 |
| work_keys_str_mv | AT elochukwustephenagudosi fabricationof3dbinderfreegraphenenioelectrodeforhighlystablesupercapattery AT ezzatchanabdullah fabricationof3dbinderfreegraphenenioelectrodeforhighlystablesupercapattery AT arshidnuman fabricationof3dbinderfreegraphenenioelectrodeforhighlystablesupercapattery AT nabisabmujawarmubarak fabricationof3dbinderfreegraphenenioelectrodeforhighlystablesupercapattery AT sitirahmahaid fabricationof3dbinderfreegraphenenioelectrodeforhighlystablesupercapattery AT raulbenagesvilau fabricationof3dbinderfreegraphenenioelectrodeforhighlystablesupercapattery AT pedrogomezromero fabricationof3dbinderfreegraphenenioelectrodeforhighlystablesupercapattery AT mohammadkhalid fabricationof3dbinderfreegraphenenioelectrodeforhighlystablesupercapattery AT nurizanomar fabricationof3dbinderfreegraphenenioelectrodeforhighlystablesupercapattery |