Rahim, A. H. A. and Majid, Siti Rohana and Sim, Cheng-Kim and Yusuf, S. N. F. and Osman, Z. (2021) Synthesis and electrochemical evaluation of cobalt-based ZIF-67 with its potential as direct use electrode materials for supercapacitors. Journal of Industrial and Engineering Chemistry, 100. pp. 248-259. ISSN 1226-086X, DOI https://doi.org/10.1016/j.jiec.2021.05.018.
Full text not available from this repository.Abstract
Zeolitic Imidazolate Frameworks containing imidazolate-based linkers were successfully prepared into three different molar ratios 3:10, 1:1, and 10:3 mmol. The effect of 2-methylimidazole (HmIM)/Cobalt (II) nitrate hexahydrate (Co(NO3)(2 center dot)6H(2)O) molar ratio on the physicochemical characteristics of Co-based ZIF-67 showed that Co-ZIF-R3 has achieved the highest specific capacity of 86 C g(-1) at 0.25 A g(-1) in 1 M KOH. An asymmetric supercapacitor (ASC) utilising Co-ZIF-R3 as fabricated cell exhibited 32 C g(-1) at current density of 0.25 A g(-1) within a large working potential of 1.70 V. Furthermore, 87% of its capacity was kept after 2500 cycles at the reversible current density of 0.50 A g(-1) until 1.0 A g(-1) revealed its high potential as electrode material for supercapacitor. This work not only amplified the information of direct use of MOF as cathode material in supercapacitors, but also the relation of the role of Co/HmIM molar ratio on the electrode materials with good electrochemical performance. (C) 2021 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Funders: | Malaysian Ministry of Higher Education (MoHE), Universiti Malaya (FRGS/1/2018/STG07/UM/02/8), Universiti Malaya (FG03417AFR) |
| Uncontrolled Keywords: | Zeolitic imidazolate frameworks; Cobalt; HmIM; Electrode materials; Supercapacitors |
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 20 Jul 2022 07:37 |
| Last Modified: | 20 Jul 2022 07:37 |
| URI: | http://eprints.um.edu.my/id/eprint/28073 |
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