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Zhang, Luojiang, Hui, Kwun Nam, San Hui, Kwan 
ORCID: https://orcid.org/0000-0001-7089-7587 and Lee, Haiwon
(2016)
High-performance hybrid supercapacitor with 3D hierarchical porous flower-like layered double hydroxide grown on nickel foam as binder-free electrode.
Journal of Power Sources, 318.
pp. 76-85.
ISSN 0378-7753
Abstract
The synthesis of layered double hydroxide (LDH) as electroactive material has been well reported; however, fabricating an LDH electrode with excellent electrochemical performance at high current density remains a challenge. In this paper, we report a 3D hierarchical porous flower-like NiAl-LDH grown on nickel foam (NF) through a liquid-phase deposition method as a high-performance binder-free electrode for energy storage. With large ion-accessible surface area as well as efficient electron and ion transport pathways, the prepared LDH-NF electrode achieves high specific capacity (1250 C g−1 at 2 A g−1 and 401 C g−1 at 50 A g−1) after 5000 cycles of activation at 20 A g−1 and high cycling stability (76.7% retention after another 5000 cycles at 50 A g−1), which is higher than those of most previously reported NiAl-LDH-based materials. Moreover, a hybrid supercapacitor with LDH-NF as the positive electrode and porous graphene nanosheet coated on NF (GNS-NF) as the negative electrode, delivers high energy density (30.2 Wh kg−1 at a power density of 800 W kg−1) and long cycle life, which outperforms the other devices reported in the literature. This study shows that the prepared LDH-NF electrode offers great potential in energy storage device applications.
| Item Type: | Article |
|---|---|
| Additional Information: | Acknowledgements: This work was supported by the Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (2014R1A1A2055740) and the Start-up Research Grant (SRG2015-00057-FST) from Research & Development Office at University of Macau. |
| Faculty \ School: | Faculty of Science > School of Engineering (former - to 2024) University of East Anglia Research Groups/Centres > Theme - ClimateUEA |
| UEA Research Groups: | Faculty of Science > Research Groups > Emerging Technologies for Electric Vehicles (EV) Faculty of Science > Research Groups > Energy Materials Laboratory |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 17 Apr 2024 16:30 |
| Last Modified: | 25 Sep 2024 17:46 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/94924 |
| DOI: | 10.1016/j.jpowsour.2016.04.010 |
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