Electrodeposited Ni–Co layered double hydroxides on titanium carbide as a binder-free electrode for supercapacitors

Li, H., Musharavati, F., Zalenezhad, E., Chen, X., Hui, K. N. and Hui, K. S. (2018) Electrodeposited Ni–Co layered double hydroxides on titanium carbide as a binder-free electrode for supercapacitors. Electrochimica Acta, 261. pp. 178-187. ISSN 0013-4686

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    Abstract

    We report the synthesized mixture of MXene and Ni–Co LDH on nickel foam by an electrodeposition technique. The specific capacitance of the mixture attained 983.6 F g−1 at a discharge current of 2 A g−1, which is greater than that of pure MXene. Compared to Ni–Co LDH, the sample created through electrodeposition provided a better rate capability of 983.6 F g−1 at 2 A g−1 and 536.6 F g−1 at 50 A g−1 and cycling stability with 76% retention after 5000 cycles at 30 A g−1. Moreover, a solid-state asymmetric supercapacitor with MXene-LDH as the positive electrode and multi-walled carbon nanotube coated on the nickel foam as the negative electrode delivers high energy density (36.70 Wh kg−1 at the power density of 1.44 kW kg−1), which outperforms the other devices reported previously.

    Item Type: Article
    Uncontrolled Keywords: binder-free electrode,electrodeposition,mxene,ni–co layered double hydroxides,supercapacitors
    Faculty \ School: Faculty of Science > School of Mathematics
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    Depositing User: Pure Connector
    Date Deposited: 17 Jan 2018 16:30
    Last Modified: 25 Jul 2018 14:28
    URI: https://ueaeprints.uea.ac.uk/id/eprint/65977
    DOI: 10.1016/j.electacta.2017.12.139

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