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3D nanoflower-like MoSe2 encapsulated with hierarchically anisotropic carbon architecture: A new and free-standing anode with ultra-high areal capacitance for asymmetric supercapacitors

Abstract

Creation of high-performance anode materials plays a key role in shortening the property gap between supercapacitors and lithium-ion battery. Here, a novel anode material with a delicate composite structure, which is assembled by growing 3D MoSe2 nanoflowers onto the hierarchically anisotropic carbon architecture, is designed for the first time. The structural superiority and synergistic effects from EDLC and pseudocapacitance endow the free-standing anode with an ultra-high areal capacitance of 1043 mF cm−2 at 1 mA cm−2 and high cycling stability. Moreover, an asymmetric supercapacitor device consisting of this anode and a common MnO2-based cathode yields a quite large energy density of 147 μW h cm−2 at the power density of 2 mW cm−2, which is higher than or comparable to that of some Li-ion batteries. These results verify the huge application potential of this new anode for supercapacitors.

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Publication details

The article was received on 19 Sep 2019, accepted on 18 Nov 2019 and first published on 19 Nov 2019


Article type: Communication
DOI: 10.1039/C9CC07362K
Chem. Commun., 2019, Accepted Manuscript

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    3D nanoflower-like MoSe2 encapsulated with hierarchically anisotropic carbon architecture: A new and free-standing anode with ultra-high areal capacitance for asymmetric supercapacitors

    S. Wei, C. Wan, Y. Jiao, X. Li, J. Li and Y. Wu, Chem. Commun., 2019, Accepted Manuscript , DOI: 10.1039/C9CC07362K

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