Synthesis and characterization of a NiCo2O4@NiCo2O4 hierarchical mesoporous nanoflake electrode for supercapacitor applications

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Chen, Xin, Li, Hui, Xu, Jianzhou, Jaber, F., Musharavati, F., Zalezhad, Erfan, Bae, S., Hui, K. S., Hui, K. N. and Liu, Junxing (2020) Synthesis and characterization of a NiCo2O4@NiCo2O4 hierarchical mesoporous nanoflake electrode for supercapacitor applications. Nanomaterials, 10 (7). pp. 1-13. ISSN 2079-4991

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Abstract

In this study, we synthesized binder-free NiCo2O4@NiCo2O4 nanostructured materials on nickel foam (NF) by combined hydrothermal and cyclic voltammetry deposition techniques followed by calcination at 350 °C to attain high-performance supercapacitors. The hierarchical porous NiCo2O4@NiCo2O4 structure, facilitating faster mass transport, exhibited good cycling stability of 83.6% after 5000 cycles and outstanding specific capacitance of 1398.73 F g−1 at the current density of 2 A·g−1, signifying its potential for energy storage applications. A solid-state supercapacitor was fabricated with the NiCo2O4@NiCo2O4 on NF as the positive electrode and the active carbon (AC) was deposited on NF as the negative electrode, delivering a high energy density of 46.46 Wh kg−1 at the power density of 269.77 W kg−1. This outstanding performance was attributed to its layered morphological characteristics. This study explored the potential application of cyclic voltammetry depositions in preparing binder-free NiCo2O4@NiCo2O4 materials with more uniform architecture for energy storage, in contrast to the traditional galvanostatic deposition methods.

Item Type:	Article
Uncontrolled Keywords:	electrodeposition,nanostructure,nico o,supercapacitors,chemical engineering(all),materials science(all) ,/dk/atira/pure/subjectarea/asjc/1500
Faculty \ School:	Faculty of Science > School of Engineering (former - to 2024)
UEA Research Groups:	Faculty of Science > Research Groups > Emerging Technologies for Electric Vehicles (former - to 2024) Faculty of Science > Research Groups > Energy Materials Laboratory
Related URLs:	http://www.scopus.com/inward/record.url?... https://www.mdpi.com/2079-4991/10/7/1292
Depositing User:	LivePure Connector
Date Deposited:	07 Jul 2020 23:58
Last Modified:	06 Feb 2025 09:12
URI:	https://ueaeprints.uea.ac.uk/id/eprint/75953
DOI:	10.3390/nano10071292

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