Preparation of Ni-Al layered double hydroxide hollow microspheres for supercapacitor electrode

Wencong Wang; Ning Zhang; Zhenyu Shi; Ziran Ye; Qiuyue Gao; Mingjia Zhi; Zhanglian Hong

doi:10.1016/j.cej.2018.01.024

Preparation of Ni-Al layered double hydroxide hollow microspheres for supercapacitor electrode

Wencong Wang, Ning Zhang, Zhenyu Shi, Ziran Ye, Qiuyue Gao, Mingjia Zhi^*, Zhanglian Hong

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

212 Citations (Scopus)

Abstract

In this study, Ni-Al layered double hydroxide (NiAl-LDH) hollow microspheres with a high surface area and large pore volume were prepared using Al₂O₃ hollow microspheres composed of Al₂O₃ nanosheets as templates. During a mild microwave-assisted hydrothermal process, the Al₂O₃ nanosheets transformed to NiAl-LDH nanosheets without any damage to the assembled hollow spherical structure. The as-prepared NiAl-LDH hollow microspheres exhibited a high specific capacitance (1578F g⁻¹ at a current density of 1 A g⁻¹) and good cycling performance (capacitance retention of 93.75% after 10,000 cycles). Moreover, an asymmetric supercapacitor was successfully assembled using the synthesized hollow microspheres as the positive electrode and activated carbon nanofibers as the negative electrode. The supercapacitor device achieved a relatively high energy density and power density (energy densities of 20 Wh kg⁻¹ and 6.6 Wh kg⁻¹ at power densities of 0.75 kW kg⁻¹ and 11.25 kW kg⁻¹, respectively). © 2018 Elsevier B.V.

Original language	English
Pages (from-to)	55-61
Journal	Chemical Engineering Journal
Volume	338
DOIs	https://doi.org/10.1016/j.cej.2018.01.024
Publication status	Published - 15 Apr 2018
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Asymmetric supercapacitors
Energy storage materials
Nickel aluminum-layered double hydroxide
Sol-gel process

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@article{f07e8263ae8d40da97f86608f75e1285,

title = "Preparation of Ni-Al layered double hydroxide hollow microspheres for supercapacitor electrode",

abstract = "In this study, Ni-Al layered double hydroxide (NiAl-LDH) hollow microspheres with a high surface area and large pore volume were prepared using Al2O3 hollow microspheres composed of Al2O3 nanosheets as templates. During a mild microwave-assisted hydrothermal process, the Al2O3 nanosheets transformed to NiAl-LDH nanosheets without any damage to the assembled hollow spherical structure. The as-prepared NiAl-LDH hollow microspheres exhibited a high specific capacitance (1578F g−1 at a current density of 1 A g−1) and good cycling performance (capacitance retention of 93.75% after 10,000 cycles). Moreover, an asymmetric supercapacitor was successfully assembled using the synthesized hollow microspheres as the positive electrode and activated carbon nanofibers as the negative electrode. The supercapacitor device achieved a relatively high energy density and power density (energy densities of 20 Wh kg−1 and 6.6 Wh kg−1 at power densities of 0.75 kW kg−1 and 11.25 kW kg−1, respectively). {\textcopyright} 2018 Elsevier B.V.",

keywords = "Asymmetric supercapacitors, Energy storage materials, Nickel aluminum-layered double hydroxide, Sol-gel process",

author = "Wencong Wang and Ning Zhang and Zhenyu Shi and Ziran Ye and Qiuyue Gao and Mingjia Zhi and Zhanglian Hong",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

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TY - JOUR

T1 - Preparation of Ni-Al layered double hydroxide hollow microspheres for supercapacitor electrode

AU - Wang, Wencong

AU - Zhang, Ning

AU - Shi, Zhenyu

AU - Ye, Ziran

AU - Gao, Qiuyue

AU - Zhi, Mingjia

AU - Hong, Zhanglian

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2018/4/15

Y1 - 2018/4/15

N2 - In this study, Ni-Al layered double hydroxide (NiAl-LDH) hollow microspheres with a high surface area and large pore volume were prepared using Al2O3 hollow microspheres composed of Al2O3 nanosheets as templates. During a mild microwave-assisted hydrothermal process, the Al2O3 nanosheets transformed to NiAl-LDH nanosheets without any damage to the assembled hollow spherical structure. The as-prepared NiAl-LDH hollow microspheres exhibited a high specific capacitance (1578F g−1 at a current density of 1 A g−1) and good cycling performance (capacitance retention of 93.75% after 10,000 cycles). Moreover, an asymmetric supercapacitor was successfully assembled using the synthesized hollow microspheres as the positive electrode and activated carbon nanofibers as the negative electrode. The supercapacitor device achieved a relatively high energy density and power density (energy densities of 20 Wh kg−1 and 6.6 Wh kg−1 at power densities of 0.75 kW kg−1 and 11.25 kW kg−1, respectively). © 2018 Elsevier B.V.

AB - In this study, Ni-Al layered double hydroxide (NiAl-LDH) hollow microspheres with a high surface area and large pore volume were prepared using Al2O3 hollow microspheres composed of Al2O3 nanosheets as templates. During a mild microwave-assisted hydrothermal process, the Al2O3 nanosheets transformed to NiAl-LDH nanosheets without any damage to the assembled hollow spherical structure. The as-prepared NiAl-LDH hollow microspheres exhibited a high specific capacitance (1578F g−1 at a current density of 1 A g−1) and good cycling performance (capacitance retention of 93.75% after 10,000 cycles). Moreover, an asymmetric supercapacitor was successfully assembled using the synthesized hollow microspheres as the positive electrode and activated carbon nanofibers as the negative electrode. The supercapacitor device achieved a relatively high energy density and power density (energy densities of 20 Wh kg−1 and 6.6 Wh kg−1 at power densities of 0.75 kW kg−1 and 11.25 kW kg−1, respectively). © 2018 Elsevier B.V.

KW - Asymmetric supercapacitors

KW - Energy storage materials

KW - Nickel aluminum-layered double hydroxide

KW - Sol-gel process

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U2 - 10.1016/j.cej.2018.01.024

DO - 10.1016/j.cej.2018.01.024

M3 - RGC 21 - Publication in refereed journal

SN - 1385-8947

VL - 338

SP - 55

EP - 61

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

ER -

Preparation of Ni-Al layered double hydroxide hollow microspheres for supercapacitor electrode

Abstract

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