Rahim, A. H. A. and Yusuf, Siti Nur Farhana and Majid, Siti Rohana and Osman, Zurina (2022) One-step co-precipitated beta-Ni(OH)(2) at different ratios of Ni/2-methylimidazole and its energy storage behaviour. Journal of Applied Electrochemistry, 52 (1). pp. 159-172. ISSN 0021-891X, DOI https://doi.org/10.1007/s10800-021-01627-0.
Full text not available from this repository.Abstract
In this study, a series of Ni-based Zeolitic Imidazolate Framework (ZIF) is successfully co-precipitated at room temperature with different ratios of nickel (II) nitrate hexahydrate (Ni(NO3)(2).6H(2)O) to 2-methylimidazole (mIM) at different ratios of 3:10, 1:1, and 10:3, denoted as Ni-ZIF-1, Ni-ZIF-2, and Ni-ZIF-3. The morphology, elemental, and structural investigation of Ni-ZIFs are carried out using field emission scanning electron microscopy (FESEM), energy-dispersive X-Ray spectroscopy (EDX), Fourier transform infrared (FTIR) spectroscopy, and X-ray diffraction (XRD). The electrochemical performance reveals that the Ni-ZIF-3 successfully delivered the highest specific capacitance of 433 F g(-1) at current density of 0.25 A g(-1). It is important to note that when Ni-ZIF-3 is used in carbon asymmetric supercapacitor (ASC), the specific capacitance of 85 F g(-1) is achieved at a current density of 0.25 A g(-1), whilst maintaining outstanding cycling stability of 93% after 1500 cycles at reversible current density from 0.5 A g(-1) until 1.0 A g(-1). A little decay during the cycle test demonstrates that the device is capable of offering durable devices with low internal resistance. Graphic abstract
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Education, Malaysia [FRGS/1/2018/STG07/UM/02/08] |
| Uncontrolled Keywords: | MOFs; ZIFs; Supercapacitors; 2-Methylimidazole; Energy storage |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Centre for Foundation Studies in Science > Chemistry Division Faculty of Science > Department of Physics |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 28 Apr 2022 01:00 |
| Last Modified: | 28 Apr 2022 01:00 |
| URI: | http://eprints.um.edu.my/id/eprint/33742 |
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