Issue 3, 2011
From the journal:

RSC Advances

Hierarchical nickel sulfide hollow spheres for high performance supercapacitors†

By Ting Zhu,a   Zhiyu Wang,a   Shujiang Ding,a   Jun Song Chen*a  and  Xiong Wen (David) Lou*a  

* Corresponding authors

a School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore
E-mail: chen0575@ntu.edu.sg, xwlou@ntu.edu.sg

Abstract

Hierarchical NiS hollow spheres assembled from ultrathin nanosheets are synthesized by an efficient template-engaged conversion method. Silica nanospheres were used as templates, and SiO2@nickel silicate core-shell nanostructures were first prepared. In the presence of Na2S, the nickel silicate shell completely transformed into NiS nanosheetsvia a hydrothermal treatment, accompanied by the total dissolution of the inner SiO2 core. This gives rise to uniform hollow nanospheres whose shells are assembled from ultrathin NiS nanosheets. In virtue of the large surface area and enhanced structural stability, the as-prepared NiS hollow spheres exhibit excellent electrochemical performance as electrode materials for supercapacitors.

Graphical abstract: Hierarchical nickel sulfide hollow spheres for high performance supercapacitors

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Article information

DOI
https://doi.org/10.1039/C1RA00240F
Article type
Communication
Submitted
28 May 2011
Accepted
29 Jun 2011
First published
23 Aug 2011

RSC Adv., 2011,1, 397-400

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Hierarchical nickel sulfide hollow spheres for high performance supercapacitors

B. T. Zhu, Z. Wang, S. Ding, J. S. Chen and X. W. (. Lou, RSC Adv., 2011, 1, 397 DOI: 10.1039/C1RA00240F

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