Ni(OH)2 nanoflakes supported on 3D hierarchically nanoporous gold/Ni foam as superior electrodes for supercapacitors

Xi Ke; Zouxin Zhang; Yifeng Cheng; Yaohua Liang; Zhiyuan Tan; Jun Liu; Liying Liu; Zhicong Shi; Zaiping Guo

doi:10.1007/s40843-017-9144-8

Ni(OH)₂ nanoflakes supported on 3D hierarchically nanoporous gold/Ni foam as superior electrodes for supercapacitors

Xi Ke
, Zouxin Zhang
, Yifeng Cheng
, Yaohua Liang
, Zhiyuan Tan
, Jun Liu
, Liying Liu
, Zhicong Shi^*
, Zaiping Guo

^*Corresponding author for this work

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

37 Citations (Scopus)

Abstract

The increasing demand for portable electronic devices and hybrid electric vehicles stimulates the development of supercapacitors as an advanced energy storage system. Here, we demonstrate a binder-free nickel hydroxide@nanoporous gold/Ni foam (Ni(OH)₂@NPG/Ni foam) electrode for high-performance supercapacitors, which is prepared by a facile three-step fabrication route including electrodeposition of Au-Sn alloy on Ni foam, chemical dealloying of Sn and electrodepostion of Ni(OH)₂ on NPG/Ni foam. Such Ni(OH)₂@NPG/Ni foam electrode is composed of a thin layer of conformable Ni(OH)₂ nanoflakes supported on three-dimensional (3D) hierarchically porous NPG/Ni foam substrate. The resulting Ni(OH)₂@NPG/Ni foam electrode can offer highways for both electron transfer and ion transport and lead to an excellent electrochemical performance with an ultrahigh specific capacitance of 3380 F g-1 at a current density of 2 A g⁻¹. Even when the current density was increased to 50 A g⁻¹, it still retained a high capacitance of 1927 F g⁻¹. The promising performance of the Ni(OH)₂@NPG/Ni foam electrode is mainly ascribed to the 3D hierarchical porosity and the highly conductive network on the NPG/Ni foam composite current collector, as well as the conformal electrodeposition of Ni(OH)₂ active material on the NPG/Ni foam, which induces the formation of interconnected porosity both on the top surface and on the inner surface of the electrode. This inspiring electrochemical performance would make the as-designed electrode material become one of the most promising candidates for future electrochemical energy storage systems. © 2017, Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature.

Original language	English
Pages (from-to)	353-362
Journal	Science China Materials
Volume	61
Issue number	3
DOIs	https://doi.org/10.1007/s40843-017-9144-8
Publication status	Published - 1 Mar 2018
Externally published	Yes

Bibliographical 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].

Funding

This work was financially supported by the National Natural Science Foundation of China (21673051, 51604086), the Guangdong Science and Technology Department (2016A010104015), the Pearl River Scholar Funded Scheme of Guangdong Province Universities and Colleges (2015), the Science and Technology Program of Guangzhou (201604030037), the ‘One-hundred Talents plan’ (220418056), the ‘One-hundred Young Talents plan’ (220413126) and the Youth Foundation (252151038) of Guangdong University of Technology.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

electrode material
hierarchical porosity
nanoporous gold
nickel hydroxide
supercapacitor

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10.1007/s40843-017-9144-8

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Cite this

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title = "Ni(OH)2 nanoflakes supported on 3D hierarchically nanoporous gold/Ni foam as superior electrodes for supercapacitors",

abstract = "The increasing demand for portable electronic devices and hybrid electric vehicles stimulates the development of supercapacitors as an advanced energy storage system. Here, we demonstrate a binder-free nickel hydroxide@nanoporous gold/Ni foam (Ni(OH)2@NPG/Ni foam) electrode for high-performance supercapacitors, which is prepared by a facile three-step fabrication route including electrodeposition of Au-Sn alloy on Ni foam, chemical dealloying of Sn and electrodepostion of Ni(OH)2 on NPG/Ni foam. Such Ni(OH)2@NPG/Ni foam electrode is composed of a thin layer of conformable Ni(OH)2 nanoflakes supported on three-dimensional (3D) hierarchically porous NPG/Ni foam substrate. The resulting Ni(OH)2@NPG/Ni foam electrode can offer highways for both electron transfer and ion transport and lead to an excellent electrochemical performance with an ultrahigh specific capacitance of 3380 F g-1 at a current density of 2 A g−1. Even when the current density was increased to 50 A g−1, it still retained a high capacitance of 1927 F g−1. The promising performance of the Ni(OH)2@NPG/Ni foam electrode is mainly ascribed to the 3D hierarchical porosity and the highly conductive network on the NPG/Ni foam composite current collector, as well as the conformal electrodeposition of Ni(OH)2 active material on the NPG/Ni foam, which induces the formation of interconnected porosity both on the top surface and on the inner surface of the electrode. This inspiring electrochemical performance would make the as-designed electrode material become one of the most promising candidates for future electrochemical energy storage systems. {\textcopyright} 2017, Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature.",

keywords = "electrode material, hierarchical porosity, nanoporous gold, nickel hydroxide, supercapacitor",

author = "Xi Ke and Zouxin Zhang and Yifeng Cheng and Yaohua Liang and Zhiyuan Tan and Jun Liu and Liying Liu and Zhicong Shi and Zaiping Guo",

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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T1 - Ni(OH)2 nanoflakes supported on 3D hierarchically nanoporous gold/Ni foam as superior electrodes for supercapacitors

AU - Ke, Xi

AU - Zhang, Zouxin

AU - Cheng, Yifeng

AU - Liang, Yaohua

AU - Tan, Zhiyuan

AU - Liu, Jun

AU - Liu, Liying

AU - Shi, Zhicong

AU - Guo, Zaiping

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 - 2018/3/1

Y1 - 2018/3/1

N2 - The increasing demand for portable electronic devices and hybrid electric vehicles stimulates the development of supercapacitors as an advanced energy storage system. Here, we demonstrate a binder-free nickel hydroxide@nanoporous gold/Ni foam (Ni(OH)2@NPG/Ni foam) electrode for high-performance supercapacitors, which is prepared by a facile three-step fabrication route including electrodeposition of Au-Sn alloy on Ni foam, chemical dealloying of Sn and electrodepostion of Ni(OH)2 on NPG/Ni foam. Such Ni(OH)2@NPG/Ni foam electrode is composed of a thin layer of conformable Ni(OH)2 nanoflakes supported on three-dimensional (3D) hierarchically porous NPG/Ni foam substrate. The resulting Ni(OH)2@NPG/Ni foam electrode can offer highways for both electron transfer and ion transport and lead to an excellent electrochemical performance with an ultrahigh specific capacitance of 3380 F g-1 at a current density of 2 A g−1. Even when the current density was increased to 50 A g−1, it still retained a high capacitance of 1927 F g−1. The promising performance of the Ni(OH)2@NPG/Ni foam electrode is mainly ascribed to the 3D hierarchical porosity and the highly conductive network on the NPG/Ni foam composite current collector, as well as the conformal electrodeposition of Ni(OH)2 active material on the NPG/Ni foam, which induces the formation of interconnected porosity both on the top surface and on the inner surface of the electrode. This inspiring electrochemical performance would make the as-designed electrode material become one of the most promising candidates for future electrochemical energy storage systems. © 2017, Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature.

AB - The increasing demand for portable electronic devices and hybrid electric vehicles stimulates the development of supercapacitors as an advanced energy storage system. Here, we demonstrate a binder-free nickel hydroxide@nanoporous gold/Ni foam (Ni(OH)2@NPG/Ni foam) electrode for high-performance supercapacitors, which is prepared by a facile three-step fabrication route including electrodeposition of Au-Sn alloy on Ni foam, chemical dealloying of Sn and electrodepostion of Ni(OH)2 on NPG/Ni foam. Such Ni(OH)2@NPG/Ni foam electrode is composed of a thin layer of conformable Ni(OH)2 nanoflakes supported on three-dimensional (3D) hierarchically porous NPG/Ni foam substrate. The resulting Ni(OH)2@NPG/Ni foam electrode can offer highways for both electron transfer and ion transport and lead to an excellent electrochemical performance with an ultrahigh specific capacitance of 3380 F g-1 at a current density of 2 A g−1. Even when the current density was increased to 50 A g−1, it still retained a high capacitance of 1927 F g−1. The promising performance of the Ni(OH)2@NPG/Ni foam electrode is mainly ascribed to the 3D hierarchical porosity and the highly conductive network on the NPG/Ni foam composite current collector, as well as the conformal electrodeposition of Ni(OH)2 active material on the NPG/Ni foam, which induces the formation of interconnected porosity both on the top surface and on the inner surface of the electrode. This inspiring electrochemical performance would make the as-designed electrode material become one of the most promising candidates for future electrochemical energy storage systems. © 2017, Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature.

KW - electrode material

KW - hierarchical porosity

KW - nanoporous gold

KW - nickel hydroxide

KW - supercapacitor

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U2 - 10.1007/s40843-017-9144-8

DO - 10.1007/s40843-017-9144-8

M3 - RGC 21 - Publication in refereed journal

SN - 2095-8226

VL - 61

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EP - 362

JO - Science China Materials

JF - Science China Materials

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