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

Chunhui Jiang; Beibei Zhan; Chen Li; Wei Huang; Xiaochen Dong

doi:10.1039/c4ra00916a

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

Chunhui Jiang
, Beibei Zhan
, Chen Li
, Wei Huang
, Xiaochen Dong

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

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.

Original language	English
Pages (from-to)	18080-18085
Number of pages	6
Journal	RSC Advances
Volume	4
Issue number	35
DOIs	https://doi.org/10.1039/c4ra00916a
State	Published - 2014
Externally published	Yes

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

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.",

author = "Chunhui Jiang and Beibei Zhan and Chen Li and Wei Huang and Xiaochen Dong",

year = "2014",

doi = "10.1039/c4ra00916a",

language = "英语",

volume = "4",

pages = "18080--18085",

journal = "RSC Advances",

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publisher = "Royal Society of Chemistry",

number = "35",

}

TY - JOUR

T1 - Synthesis of three-dimensional self-standing graphene/Ni(OH)2 composites for high-performance supercapacitors

AU - Jiang, Chunhui

AU - Zhan, Beibei

AU - Li, Chen

AU - Huang, Wei

AU - Dong, Xiaochen

PY - 2014

Y1 - 2014

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/84899512445

U2 - 10.1039/c4ra00916a

DO - 10.1039/c4ra00916a

M3 - 文章

AN - SCOPUS:84899512445

SN - 2046-2069

VL - 4

SP - 18080

EP - 18085

JO - RSC Advances

JF - RSC Advances

IS - 35

ER -

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

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