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Issue 45, 2017
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Hierarchical 1T-MoS2 nanotubular structures for enhanced supercapacitive performance

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Abstract

Layered transition metal disulfides are currently being widely studied for advanced energy generation and storage applications. Here we report a facile template-assisted solvothermal strategy to obtain a hierarchical nanotubular structure consisting of ultrathin MoS2 nanosheets with a metallic 1T phase. Synchrotron radiation based X-ray absorption fine structure (XAFS) and X-ray photoelectron spectroscopy (XPS) are used to investigate the structure and electronic properties of the 1T-MoS2, which are largely different from annealed samples. Its hierarchical structure makes the obtained nanotubular 1T-MoS2 an excellent electrode material for supercapacitors, with a high specific capacitance of 328.547 F g−1 at a current density of 1 A g−1 and 243.66 F g−1 at a current density of 15 A g−1. Moreover, the material displays excellent capacitance retention, retaining 98.4% capacity after 5000 cycles at a current density of 3 A g−1. Notably, a high specific capacitance of 250 F g−1 at 1 A g−1 is also achieved in a two-electrode symmetrical cell, suggesting its great potential for new-generation supercapacitors.

Graphical abstract: Hierarchical 1T-MoS2 nanotubular structures for enhanced supercapacitive performance

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Publication details

The article was received on 14 Sep 2017, accepted on 23 Oct 2017 and first published on 23 Oct 2017


Article type: Paper
DOI: 10.1039/C7TA08115D
Citation: J. Mater. Chem. A, 2017,5, 23704-23711
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    Hierarchical 1T-MoS2 nanotubular structures for enhanced supercapacitive performance

    S. Yang, K. Zhang, C. Wang, Y. Zhang, S. Chen, C. Wu, A. Vasileff, S. Qiao and L. Song, J. Mater. Chem. A, 2017, 5, 23704
    DOI: 10.1039/C7TA08115D

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