Issue 2, 2012
From the journal:

Journal of Materials Chemistry

Preparation of nano-networks of MnO2 shell/Ni current collector core for high-performance supercapacitor electrodes

Dequan Liu,a   Qi Wang,a   Li Qiao,a   Fei Li,a   Desheng Wang,a   Zhibo Yanga  and  Deyan He*a  

* Corresponding authors

a School of Physical Science and Technology, Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, China
E-mail: hedy@lzu.edu.cn
Fax: +86-931-8913554
Tel: +86-931-8912546

Abstract

A novel architecture of nickel current collector (NCC) is fabricated cost-effectively by electrospinning. An ultrathin MnO2 coating is electrodeposited on to the NCC and the resultant nano-networks of MnO2 shell/NCC core are used as supercapacitor electrodes. Excellent electrochemical performance is revealed at a high charge/discharge rate. The cyclic voltammetry measurements show that the current is stable even at a scan rate as fast as 200 mV s−1. A capacitance of 214 F g−1 is obtained by galvanostatic testing at a current density as large as 20 A g−1, which is much higher than that of MnO2 coated Ni foam.

Graphical abstract: Preparation of nano-networks of MnO2 shell/Ni current collector core for high-performance supercapacitor electrodes

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Article information

DOI
https://doi.org/10.1039/C1JM13894D
Article type
Paper
Submitted
11 Aug 2011
Accepted
10 Oct 2011
First published
10 Nov 2011

J. Mater. Chem., 2012,22, 483-487

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Preparation of nano-networks of MnO2 shell/Ni current collector core for high-performance supercapacitor electrodes

D. Liu, Q. Wang, L. Qiao, F. Li, D. Wang, Z. Yang and D. He, J. Mater. Chem., 2012, 22, 483 DOI: 10.1039/C1JM13894D

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