Pershaanaa, M. and Farhana, N. K. and Goh, Z. L. and Kamarulazam, Fathiah and Liew, J. and Bashir, Shahid and Ramesh, K. and Ramesh, S. (2025) Boosting energy storage capacity: Transition metal-modified binary nickel hydroxide hydrate composites for supercapattery application. Flatchem, 50. p. 100830. ISSN 2452-2627, DOI https://doi.org/10.1016/j.flatc.2025.100830.
Full text not available from this repository.Abstract
Transition metal hydroxycarbonates are extensively studied in energy storage devices for their unique features: high redox activity, low polarization, better structural stability, and high energy features. Therefore, Cu-Ni, Mn-Ni, and Co-Ni carbonate hydroxide hydrate binary composites were synthesized as battery-grade electrode materials for supercapatteries, aiming to enhance conductivity through synergistic effects and tailored morphologies. The morphological modifications and their influence on the electrochemical performance have been systematically investigated. Copper-based nickel carbonate hydroxide hydrate (Cu@NCHH) composite grown on Ni-foam (NF) among the other pairs yields the highest specific capacity/specific capacitance of 736.50C g- 1/ 1486.38 F g- 1 owing to its highly exposed electroactive sites for rapid and better intercalation/de-intercalation of OH- ions into the bulk material. Supercapattery fabricated by Cu@NCHH/NF coupled with activated carbon electrode (AC/NF) exhibits outstanding energy storage capacity (42.20 Wh/kg) with a maximum power density of 12.29 kW/kg. The device also displays a significant improvement in cycling performance up to 161 % over 1000 cycles and 97 % over 5000 cycles with almost 100 % coulombic efficiency. Overall, this work provides a facile and efficient method to produce highly performing binder-free binary nickel carbonate hydroxide hydrate composite (M@NCHH/NF) for supercapattery.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Higher Edu-cation through the Fundamental Research Grant Scheme (FRGS/1/2022/STG05/UM/01/2) |
| Uncontrolled Keywords: | Binary nickel carbonate hydroxide hydrates; Sea-urchin morphology; Flower morphology; Binder-free electrode; Supercapattery |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics Deputy Vice Chancellor (Research & Innovation) Office > UM Power Energy Dedicated Advanced Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 29 Apr 2025 07:15 |
| Last Modified: | 29 Apr 2025 07:15 |
| URI: | http://eprints.um.edu.my/id/eprint/47909 |
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