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

Luojiang Zhang; Jie Wang; Jiajia Zhu; Xiaogang Zhang; Kwan San Hui; Kwun Nam Hui

doi:10.1039/c3ta11755c

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

Luojiang Zhang, Jie Wang, Jiajia Zhu, Xiaogang Zhang, Kwan San Hui, Kwun Nam Hui

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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.

Original language	English
Pages (from-to)	9046-9053
Number of pages	8
Journal	Journal of Materials Chemistry A
Volume	1
Issue number	32
Early online date	6 Jun 2013
DOIs	https://doi.org/10.1039/c3ta11755c
Publication status	Published - 28 Aug 2013

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10.1039/c3ta11755c

Cite this

@article{3f1e250021c348e7b6cb1ed4e5a594aa,

title = "3D porous layered double hydroxides grown on graphene as advanced electrochemical pseudocapacitor materials",

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.",

author = "Luojiang Zhang and Jie Wang and Jiajia Zhu and Xiaogang Zhang and {San Hui}, Kwan and Hui, {Kwun Nam}",

note = "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).",

year = "2013",

month = aug,

day = "28",

doi = "10.1039/c3ta11755c",

language = "English",

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journal = "Journal of Materials Chemistry A",

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TY - JOUR

T1 - 3D porous layered double hydroxides grown on graphene as advanced electrochemical pseudocapacitor materials

AU - Zhang, Luojiang

AU - Wang, Jie

AU - Zhu, Jiajia

AU - Zhang, Xiaogang

AU - San Hui, Kwan

AU - Hui, Kwun Nam

N1 - 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).

PY - 2013/8/28

Y1 - 2013/8/28

N2 - 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.

AB - 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.

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DO - 10.1039/c3ta11755c

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JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

SN - 2050-7488

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