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Issue 103, 2016, Issue in Progress
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Facile synthesis of mesoporous hierarchical ZnS@β-Ni(OH)2 microspheres for flexible solid state hybrid supercapacitors

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Abstract

Mesoporous hierarchical ZnS@β-Ni(OH)2 microspheres have been successfully synthesized via a facile route. In the synthesis process, ZnS spheres are used as the templates for the direct growth of β-Ni(OH)2 nanosheets on their surface. Owing to their unique structure and composition, when the mesoporous hierarchical ZnS@β-Ni(OH)2 microspheres were utilized as electrode materials for supercapacitors, which exhibited substantially enhanced specific capacitance (1361.7 F g−1 at 4.0 A g−1) compared with ZnS and β-Ni(OH)2. Furthermore, a flexible solid state hybrid supercapacitor was assembled by using mesoporous hierarchical ZnS@β-Ni(OH)2 microspheres as a positive electrode and activated carbon as a negative electrode. The resulting flexible solid state device showed a specific capacitance of 170.97 mF cm−2 at 2.0 mA cm−2, and offered a volumetric energy density of 0.783 mW h cm−3 and a power density of 45.7 mW cm−3. Impressively, the device displayed good mechanical flexibility under various bending angles from 0° to 180°. This study presents a novel and promising electrochemically active material for supercapacitors.

Graphical abstract: Facile synthesis of mesoporous hierarchical ZnS@β-Ni(OH)2 microspheres for flexible solid state hybrid supercapacitors

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Publication details

The article was received on 22 Sep 2016, accepted on 19 Oct 2016 and first published on 19 Oct 2016


Article type: Paper
DOI: 10.1039/C6RA23549B
Citation: RSC Adv., 2016,6, 101016-101022
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    Facile synthesis of mesoporous hierarchical ZnS@β-Ni(OH)2 microspheres for flexible solid state hybrid supercapacitors

    C. Wei, C. Cheng, W. Du, J. Ren, M. Li, J. Dong and K. Liu, RSC Adv., 2016, 6, 101016
    DOI: 10.1039/C6RA23549B

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