Hierarchical NiO Microflowers for High Performance Supercapacitors

X. J. Wang; X. A. Xia; W. J. Meng; C. X. Yang; M. Q. Guo; Y. Zhao; F. Q. Yang

doi:10.1007/s11664-018-6574-1

Hierarchical NiO Microflowers for High Performance Supercapacitors

X. J. Wang, X. A. Xia, W. J. Meng, C. X. Yang, M. Q. Guo, Y. Zhao, F. Q. Yang

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

4 Scopus citations

Abstract

Hierarchical NiO-microstructures including microflowers are synthesized on the surface of copper foams via hydrothermal precipitation. The surface morphology and structure of the NiO-microstructures are investigated by scanning electron microscopy and x-ray diffraction spectroscopy. The electrochemical performance of a three-electrode system with the NiO-microstructures as the working electrode is characterized. The three-electrode system with the NiO-microflowers synthesized with 6 h exhibits a specific capacitance of 3435.5 F/g at the electric current density of 0.5 A/cm² and the capacitance retention of 53.3% after 100 cycles. Large retentions of ∼ 95.4% and ∼ 100% for the NiO-microstructures made with hydrothermal times of 3 h and 24 h are achieved, respectively.

Original language	English
Pages (from-to)	6774-6780
Number of pages	7
Journal	Journal of Electronic Materials
Volume	47
Issue number	11
DOIs	https://doi.org/10.1007/s11664-018-6574-1
State	Published - Nov 1 2018

Bibliographical note

Publisher Copyright:
© 2018, The Minerals, Metals & Materials Society.

Funding

This work was supported by the Natural Science Foundation of China [51301117, 11502158, 11402161 and 11402162]; International Cooperation Project Foundation of Shanxi Province China [201603D421037 and 2015081053]; Higher School Science and Technology Innovation Project Foundation of Shanxi Province, China [2016128] and Research Project Supported by Shanxi Scholarship Council of China [2015-034]. FY is grateful for the support from the NSF through the grant CMMI-1634540, monitored by Dr. Khershed Cooper.

Funders	Funder number
Higher School Science and Technology Innovation Project Foundation of Shanxi Province China	2016128
International Cooperation Project Foundation of Shanxi Province China	2015081053, 201603D421037
National Science Foundation (NSF)	CMMI-1634540
National Natural Science Foundation of China (NSFC)	11402161, 11402162, 11502158, 51301117
Shanxi Scholarship Council of China	2015-034

Keywords

NiO
Supercapacitor
hydrothermal precipitation
microflower

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering
Materials Chemistry

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10.1007/s11664-018-6574-1

Cite this

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title = "Hierarchical NiO Microflowers for High Performance Supercapacitors",

abstract = "Hierarchical NiO-microstructures including microflowers are synthesized on the surface of copper foams via hydrothermal precipitation. The surface morphology and structure of the NiO-microstructures are investigated by scanning electron microscopy and x-ray diffraction spectroscopy. The electrochemical performance of a three-electrode system with the NiO-microstructures as the working electrode is characterized. The three-electrode system with the NiO-microflowers synthesized with 6 h exhibits a specific capacitance of 3435.5 F/g at the electric current density of 0.5 A/cm2 and the capacitance retention of 53.3% after 100 cycles. Large retentions of ∼ 95.4% and ∼ 100% for the NiO-microstructures made with hydrothermal times of 3 h and 24 h are achieved, respectively.",

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author = "Wang, {X. J.} and Xia, {X. A.} and Meng, {W. J.} and Yang, {C. X.} and Guo, {M. Q.} and Y. Zhao and Yang, {F. Q.}",

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AU - Wang, X. J.

AU - Xia, X. A.

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AU - Guo, M. Q.

AU - Zhao, Y.

AU - Yang, F. Q.

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AB - Hierarchical NiO-microstructures including microflowers are synthesized on the surface of copper foams via hydrothermal precipitation. The surface morphology and structure of the NiO-microstructures are investigated by scanning electron microscopy and x-ray diffraction spectroscopy. The electrochemical performance of a three-electrode system with the NiO-microstructures as the working electrode is characterized. The three-electrode system with the NiO-microflowers synthesized with 6 h exhibits a specific capacitance of 3435.5 F/g at the electric current density of 0.5 A/cm2 and the capacitance retention of 53.3% after 100 cycles. Large retentions of ∼ 95.4% and ∼ 100% for the NiO-microstructures made with hydrothermal times of 3 h and 24 h are achieved, respectively.

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Hierarchical NiO Microflowers for High Performance Supercapacitors

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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