Synthesis of three-dimensional self-standing graphene/Ni(OH)2 composites for high-performance supercapacitors

Content Provider	Semantic Scholar
Author	Jiang, Chunhui Zhan, Beibei Li, Chen Huang, Wei Dong, Xiaochen
Copyright Year	2014
Abstract	Using surface active agents, three-dimensional (3D) self-standing graphene/Ni(OH)2 composites with different morphologies, such as nanoflowers, nanoslices and nanoparticles, are directly synthesized by a facile in situ electrodeposition method. SEM and Raman spectroscopy are used to investigate the morphologies and structures. Detailed electrochemical characterizations reveal that the 3D graphene/Ni(OH)2 nanoflower exhibits high specific capacitance (718.2 F g−1 at 6.7A g−1 in 6.0 M KOH aqueous solution) and good cycling performance (84.2% capacitance retention after 500 cycles) compared with those of other Ni(OH)2 morphologies. Nyquist plot investigation shows that 3D graphene/Ni(OH)2 nanoflowers present a low equivalent series resistance. These results indicate that the composite may be a promising candidate for high-performance supercapacitors.
Starting Page	18080
Ending Page	18085
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1039/C4RA00916A
Alternate Webpage(s)	https://pubs.rsc.org/en/content/getauthorversionpdf/C4RA00916A
Alternate Webpage(s)	https://doi.org/10.1039/C4RA00916A
Volume Number	4
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article