Issue 105, 2016, Issue in Progress

MOF-derived self-sacrificing route to hollow NiS2/ZnS nanospheres for high performance supercapacitors

Abstract

Transition metal sulfides have complex valence states and exhibit excellent properties and promising applications in supercapacitors. NiS2/ZnS hollow spherical nanocomposites have been successfully synthesized via a facile MOF-derived self-sacrificing route. The synthesis process involves solvothermal method for preparation of Ni/Zn–BDC MOF and subsequently chemical sulfidation treatment to convert into NiS2/ZnS hollow nanospheres. When evaluated as electrode materials in supercapacitor, the NiS2/ZnS hollow nanospheres exhibit high capacitance of 1198 F g−1 at the current density of 1 A g−1. Moreover, an asymmetric supercapacitor based on NiS2/ZnS hollow nanospheres as the positive electrode and activated carbon (AC) as the negative electrode achieves an energy density of 28.0 W h kg−1 at a power density of 478.9 kW kg−1. The results suggest the NiS2/ZnS hollow nanospheres are promising electrode materials for high-performance supercapacitors.

Graphical abstract: MOF-derived self-sacrificing route to hollow NiS2/ZnS nanospheres for high performance supercapacitors

Supplementary files

Article information

Article type
Paper
Submitted
15 Sep 2016
Accepted
22 Oct 2016
First published
24 Oct 2016

RSC Adv., 2016,6, 103517-103522

MOF-derived self-sacrificing route to hollow NiS2/ZnS nanospheres for high performance supercapacitors

G. Li, M. Liu, M. Wu, P. Liu, Z. Zhou, S. Zhu, R. Liu and L. Han, RSC Adv., 2016, 6, 103517 DOI: 10.1039/C6RA23071G

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