Ni(OH)2 nanoflowers/graphene hydrogels: A new assembly for supercapacitors

Ronghua Wang; Anjali Jayakumar; Chaohe Xu; Jong Min Lee

doi:10.1021/acssuschemeng.6b00362

Ni(OH)₂ nanoflowers/graphene hydrogels: A new assembly for supercapacitors

Ronghua Wang, Anjali Jayakumar, Chaohe Xu^*, Jong Min Lee

^*Corresponding author for this work

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

96 Citations (Scopus)

Abstract

A novel structure of graphene-based hybrid hydrogels was constructed, in which α-Ni(OH)₂ nanoflowers with nanopetals thicknesses of approximately 20 nm were uniformly anchored on a three-dimensional graphene framework. Benefiting from the unique morphological nickel hydroxide nanoflowers and hydrogels, the nickel hydroxide nanoflowers/graphene hydrogels exhibited great specific capacitances (1 A·g^-1 1632 F·g^-1), great rate capabilities, and longer cycle life (after 1000 cycles, 95.2% capacitance retention) when used as electrodes in supercapacitors.

Original language	English
Pages (from-to)	3736-3742
Number of pages	7
Journal	ACS Sustainable Chemistry and Engineering
Volume	4
Issue number	7
DOIs	https://doi.org/10.1021/acssuschemeng.6b00362
Publication status	Published - Jul 5 2016
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2016 American Chemical Society.

ASJC Scopus Subject Areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Renewable Energy, Sustainability and the Environment

Keywords

Binder-free electrode
Graphene
Hydrogels
Nickel hydroxide
Supercapacitor

UN SDGs

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

Access to Document

10.1021/acssuschemeng.6b00362

Cite this

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title = "Ni(OH)2 nanoflowers/graphene hydrogels: A new assembly for supercapacitors",

abstract = "A novel structure of graphene-based hybrid hydrogels was constructed, in which α-Ni(OH)2 nanoflowers with nanopetals thicknesses of approximately 20 nm were uniformly anchored on a three-dimensional graphene framework. Benefiting from the unique morphological nickel hydroxide nanoflowers and hydrogels, the nickel hydroxide nanoflowers/graphene hydrogels exhibited great specific capacitances (1 A·g-1 1632 F·g-1), great rate capabilities, and longer cycle life (after 1000 cycles, 95.2% capacitance retention) when used as electrodes in supercapacitors.",

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AU - Lee, Jong Min

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AB - A novel structure of graphene-based hybrid hydrogels was constructed, in which α-Ni(OH)2 nanoflowers with nanopetals thicknesses of approximately 20 nm were uniformly anchored on a three-dimensional graphene framework. Benefiting from the unique morphological nickel hydroxide nanoflowers and hydrogels, the nickel hydroxide nanoflowers/graphene hydrogels exhibited great specific capacitances (1 A·g-1 1632 F·g-1), great rate capabilities, and longer cycle life (after 1000 cycles, 95.2% capacitance retention) when used as electrodes in supercapacitors.

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KW - Nickel hydroxide

KW - Supercapacitor

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