Journal
RSC ADVANCES
Volume 4, Issue 35, Pages 18080-18085Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra00916a
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Funding
- Jiangsu Provincial Founds for Distinguished Young Scholars [BK20130046]
- National Basic Research Program of China [2012CB933300]
- NNSF of China [21275076, 61328401]
- Key Project of Chinese Ministry of Education [212058]
- Program for New Century Excellent Talents in University [NCET-13-0853)]
- Research Fund for the Doctoral Program of Higher Education of China [20123223110008]
- Ministry of Education of China [IRT1148]
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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.
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