A facile phase transformation method for the preparation of 3D flower-like β-Ni(OH)2/GO/CNTs composite with excellent supercapacitor performance

Xiaowei Ma; Jiwei Liu; Chongyun Liang; Xiwen Gong; Renchao Che

doi:10.1039/C4TA02221A

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A facile phase transformation method for the preparation of 3D flower-like β-Ni(OH)₂/GO/CNTs composite with excellent supercapacitor performance†

Xiaowei Ma,^a Jiwei Liu,^b Chongyun Liang,^a Xiwen Gong^a and Renchao Che*^a

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* Corresponding authors

^a Department of Materials Science and Laboratory of Advanced Materials, Fudan University, Shanghai, People's Republic of China
E-mail: rcche@fudan.edu.cn

^b National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki, Japan

Abstract

3D flower-like β-Ni(OH)₂/GO/CNTs composite was prepared via a facile phase transformation method with a high specific capacitance of ∼1815 F g⁻¹ (nearly 96% of its theoretical pseudocapacitance) at 2 A g⁻¹ and a good cycling performance of ∼97% capacitance retention after 2000 cycles at 10 A g⁻¹. The morphology of β-Ni(OH)₂ undergoes successive changes that could be controlled by adjusting the reaction time.

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Article information

DOI: https://doi.org/10.1039/C4TA02221A
Article type: Communication
Submitted: 04 May 2014
Accepted: 30 May 2014
First published: 04 Jun 2014

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J. Mater. Chem. A, 2014,2, 12692-12696

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A facile phase transformation method for the preparation of 3D flower-like β-Ni(OH)₂/GO/CNTs composite with excellent supercapacitor performance

X. Ma, J. Liu, C. Liang, X. Gong and R. Che, J. Mater. Chem. A, 2014, 2, 12692 DOI: 10.1039/C4TA02221A

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Journal of Materials Chemistry A