Issue 24, 2011
From the journal:

CrystEngComm

Controllable preparation of NiO macrotubes from NiC2O4 and its application in supercapacitors†

Fan Lei,a   Tang Lea  and  Guo Rong*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

In this article, the tube-like nickel oxide materials was synthesized by decomposition of nickel oxalate which was prepared by a facile hydrothermal method. Some experimental parameters affecting the morphology were studied. The electrochemical capacitive properties of the nickel oxide macrotubes were investigated using cycling voltammetry and charge/discharge techniques with KOH as electrolytes. The specific capacitance of the obtained nickel oxide macrotube electrode was measured to be as high as 701.2 F g−1 at a current density of 0.5 A g−1. The effect of calcination temperature and current density on the specific capacities were also studied. Furthermore, the obtained nickel oxide shows a good capacitive retention of ca. 93% after 1000 charge/discharge cycles.

Graphical abstract: Controllable preparation of NiO macrotubes from NiC2O4 and its application in supercapacitors

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Article information

DOI
https://doi.org/10.1039/C1CE05735A
Article type
Paper
Submitted
16 Jun 2011
Accepted
22 Aug 2011
First published
28 Sep 2011

CrystEngComm, 2011,13, 7246-7251

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Controllable preparation of NiO macrotubes from NiC2O4 and its application in supercapacitors

F. Lei, T. Le and G. Rong, CrystEngComm, 2011, 13, 7246 DOI: 10.1039/C1CE05735A

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