Controllable preparation of 2D nickel aluminum layered double hydroxide nanoplates for high-performance supercapacitors

Li, Lei, Fu, Jianjian, Hui, Kwan San ORCID:, Hui, Kwun Nam and Cho, Young Rae (2018) Controllable preparation of 2D nickel aluminum layered double hydroxide nanoplates for high-performance supercapacitors. Journal of Materials Science: Materials in Electronics, 29 (20). pp. 17493-17502. ISSN 0957-4522

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Optimizing the composition of nanostructured transition metal oxides and hydroxides has been proven to be an effective approach to alter the electrochemical performance of the materials. In this study, we synthesized and optimized the molar ratios of Ni/Al in NiAl LDH nanoplates by a facile hydrothermal method. Among the studied samples, the Ni0.65Al0.35 LDH electrode exhibited higher electrochemical performance than other studied compositions, resulting in a prominent specific capacitance of 1733.3 F g−1 at 1 A g−1 and high cycling stability of 87.1% after 5000 cycles at a current density of 5 A g−1. An asymmetric supercapacitor device assembled with the optimized Ni0.65Al0.35 LDH as positive electrode and graphene as negative electrode delivered a high energy density of 32.6 Wh kg−1 at a power density of 700 W kg−1 along with excellent cycling performance of 93.2% after 5000 cycles at a current density of 5 A g−1. The optimized Ni0.65Al0.35 LDH nanoplates hold great promise as advanced electrode materials for high-performance energy storage devices.

Item Type: Article
Additional Information: Funding Information: Acknowledgements This work is supported by the Basic Science Research Program through the National Research Foundation (NRF) funded by the Korea Ministry of Education [2016R1D1A1B02009234]; the Science and Technology Development Fund of the Macau SAR [FDCT-098/2015/A3 and FDCT-191/2017/A3]; the Multi-Year Research Grants from the Research & Development Office at the University of Macau [MYRG2017-00216-FST and MYRG2018-00192-IAPME]; and the UEA funding. Publisher Copyright: © 2018, Springer Science+Business Media, LLC, part of Springer Nature.
Uncontrolled Keywords: electronic, optical and magnetic materials,atomic and molecular physics, and optics,condensed matter physics,electrical and electronic engineering ,/dk/atira/pure/subjectarea/asjc/2500/2504
Faculty \ School: University of East Anglia Research Groups/Centres > Theme - ClimateUEA
Faculty of Science > School of Engineering
UEA Research Groups: Faculty of Science > Research Groups > Emerging Technologies for Electric Vehicles (EV)
Faculty of Science > Research Groups > Energy Materials Laboratory
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Depositing User: LivePure Connector
Date Deposited: 04 Apr 2024 09:31
Last Modified: 09 Apr 2024 08:10
DOI: 10.1007/s10854-018-9849-7

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