Issue 32, 2012
From the journal:

Journal of Materials Chemistry

Carbon-nanoparticles encapsulated in hollow nickel oxides for supercapacitor application†

Lei Fan,a   Le Tang,a   Huifang Gong,a   Zhiheng Yaoa  and  Rong Guo*a  

* Corresponding authors

a School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, People's Republic of China
E-mail: guorong@yzu.edu.cn
Fax: +86-514-87311374
Tel: +86-514-87975219

Abstract

Monodisperse carbon nanoparticles encapsulated in hollow NiO nanostructures (C@NiO) have been successfully synthesized by calcination from a Ni(OH)2 covered carbon (C@Ni(OH)2) precursor. The as-prepared products at each stage were extensively characterized and carefully discussed. The electrochemical properties of the carbon encapsulated in hollow NiO nanostructures were investigated using cycling voltammetry and charge–discharge techniques. The specific capacitance of the obtained C@NiO electrode was about 988.7 F g−1 at a current density of 0.5 A g−1. It shows better performance than hollow NiO spheres obtained in oxygen atmosphere. Furthermore, the C@NiO electrode shows a good capacitive retention of ca. 90.7% after 1000 charge–discharge cycles.

Graphical abstract: Carbon-nanoparticles encapsulated in hollow nickel oxides for supercapacitor application

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Article information

DOI
https://doi.org/10.1039/C2JM32241B
Article type
Paper
Submitted
10 Apr 2012
Accepted
19 Jun 2012
First published
20 Jun 2012

J. Mater. Chem., 2012,22, 16376-16381

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Carbon-nanoparticles encapsulated in hollow nickel oxides for supercapacitor application

L. Fan, L. Tang, H. Gong, Z. Yao and R. Guo, J. Mater. Chem., 2012, 22, 16376 DOI: 10.1039/C2JM32241B

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