Fabrication of Co3O4 from Cobalt/2,6-Napthalenedicarboxylic Acid Metal-Organic Framework as Electrode for Supercapacitor Application
| Autor: | Iver Brevik, Mohamad A. Brza, Shujahadeen B. Aziz, Ibnu Syafiq Imaduddin, Siti Rohana Majid, S.N.F. Yusuf, Salah R. Saeed, Mohd F. Z. Kadir |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Thermogravimetric analysis
Materials science Scanning electron microscope metal-organic frameworks (MOFs) Analytical chemistry chemistry.chemical_element XRD and FESEM study 02 engineering and technology 010402 general chemistry 01 natural sciences lcsh:Technology Article General Materials Science CV and GCD examination Fourier transform infrared spectroscopy Spectroscopy lcsh:Microscopy lcsh:QC120-168.85 lcsh:QH201-278.5 lcsh:T Thermal decomposition electrochemical properties 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry lcsh:TA1-2040 Electrode FTIR study TGA analysis lcsh:Descriptive and experimental mechanics Crystallite lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) Cobalt lcsh:TK1-9971 |
| Zdroj: | Materials, Vol 14, Iss 573, p 573 (2021) Materials Volume 14 Issue 3 |
| ISSN: | 1996-1944 |
| Popis: | In this study, cobalt-based metal-organic framework (MOF) powder was prepared via the solvothermal method using 2,6-naphthalenedicarboxylic acid (NDC) as the organic linker and N,N-dimethylformamide (DMF) as the solvent. The thermal decomposition of the pristine cobalt-based MOF sample (CN-R) was identified using a thermogravimetric examination (TGA). The morphology and structure of the MOFs were modified during the pyrolysis process at three different temperatures: 300, 400, and 500 ° C, which labeled as CN-300, CN-400, and CN-500, respectively. The results were evidenced via field-emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). The crystallite size of all samples was calculated using Scherrer&rsquo s equation. The smallest crystallite size of 7.77 nm was calculated for the CN-300 sample. Fourier transform infrared spectroscopy (FTIR) spectra were acquired for all the samples. The graphical study of the cyclic voltammogram (CV) gave the reduction and oxidation peaks. The charge transfer resistance and ionic conductivity were studied using electrical impedance spectroscopy (EIS). The galvanostatic charge&ndash discharge (GCD) responses of all samples were analyzed. The relatively high specific capacitance of 229 F g&minus 1 at 0.5 A g&minus 1 was achieved in the sample CN-300, whereby 110% of capacitance was retained after 5000 cycles. These findings highlighted the durability of the electrode materials at high current densities over a long cycle. |
| Databáze: | OpenAIRE |
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