3D porous layered double hydroxides grown on graphene as advanced electrochemical pseudocapacitor materials

Zhang, Luojiang, Wang, Jie, Zhu, Jiajia, Zhang, Xiaogang, San Hui, Kwan ORCID: https://orcid.org/0000-0001-7089-7587 and Hui, Kwun Nam (2013) 3D porous layered double hydroxides grown on graphene as advanced electrochemical pseudocapacitor materials. Journal of Materials Chemistry A, 1 (32). pp. 9046-9053. ISSN 2050-7488

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Abstract

A 3D hybrid nickel-aluminum layered double hydroxide (NiAl-LDH)–graphene nanosheets (GNS) composite as a supercapacitor material has been fabricated by in situ deposition of LDH nanosheets on graphene oxide (GO) through a liquid phase deposition method. The results reveal that NiAl-LDH homogeneously grew on the surface of GNS as spacers to keep the neighboring sheets separate. Optimum effects could be achieved when feeding ratio, reaction time and temperature are tuned. The obtained porous GNS/NiAl-LDH composite exhibited high-capacitance performance with a specific capacitance of 1255.8 F g−1 at a current density of 1 A g−1 and 755.6 F g−1 at 6 A g−1, respectively. Moreover, the composite exhibited excellent cycling performance with an increase of 6% capacitance compared with the initial capacitance after 1500 cycle tests. Such high specific capacitance, rate capability and exceptional cycling ability of the composite offered great promise in energy storage device applications.

Item Type:	Article
Additional Information:	Acknowledgements: This work was supported by the National Natural Science Foundation of China (no. 20873064, no. 201173120) and the Natural Science Foundation of Jiangsu Province (no. BK2011030).
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
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/94926
DOI:	10.1039/c3ta11755c

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