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

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32 引用（Scopus）

摘要

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.

源语言	英语
页（从-至）	18080-18085
页数	6
期刊	RSC Advances
卷	4
期	35
DOI	https://doi.org/10.1039/c4ra00916a
出版状态	已出版 - 2014
已对外发布	是

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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",

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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.

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

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