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In situ formation of Ni3S2–Cu1.8S nanosheets to promote hybrid supercapacitor performance

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Abstract

Homogeneous copper incorporated nickel sulfide (NS) nanosheets were realized via an in situ ion exchange method and one-pot hydrothermal process. Nickel foam (NF) and copper foam (CF) were used as metal sources for the co-formation of Cu1.8S–Ni3S2 in the presence of thiourea. As a result of the Cu incorporation, the NF-supported Ni3S2 nanosheets exhibited improved electronic conductivity with higher electrochemical surface area (ECSA). When evaluated as electrode materials for supercapacitors, the as-obtained active materials demonstrated high specific capacitance (1686 F g−1 at 1 A g−1) with excellent cycling performance (95.39% capacitive retention after 10 000 cycles), which may be attributed to the unique structural features as well as the synergistic effect of localized copper species with Ni3S2 nanosheets.

Graphical abstract: In situ formation of Ni3S2–Cu1.8S nanosheets to promote hybrid supercapacitor performance

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Publication details

The article was received on 19 Feb 2019, accepted on 08 Apr 2019 and first published on 08 Apr 2019


Article type: Paper
DOI: 10.1039/C9TA01880H
Citation: J. Mater. Chem. A, 2019, Advance Article

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    In situ formation of Ni3S2–Cu1.8S nanosheets to promote hybrid supercapacitor performance

    Y. Liu, G. Liu, X. Nie, A. Pan, S. Liang and T. Zhu, J. Mater. Chem. A, 2019, Advance Article , DOI: 10.1039/C9TA01880H

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