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Issue 4, 2018
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Facile synthesis of electrostatically anchored Nd(OH)3 nanorods onto graphene nanosheets as a high capacitance electrode material for supercapacitors

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Abstract

Neodymium hydroxide nanorods [Nd(OH)3] are developed by a facile chemical precipitation method without any surfactants/templates at ambient temperature. The neodymium hydroxide nanorods–graphene [Nd(OH)3/G] nanohybrid is prepared by a simple solvothermal reduction process using Nd(OH)3/GO in a mass ratio of 1 : 0.5 in dimethylformamide for 7 h. This new Nd(OH)3/G nanohybrid can be used as an electrode material for supercapacitors; it exhibits good capacitive behaviour, with a specific capacitance of 820 F g−1 at 1 A g−1. The nanohybrid exhibits a capacitance retention of 96% even after 3000 continuous charge–discharge cycles. This excellent electrochemical behaviour is mainly attributed to the synergetic effect of Nd(OH)3 and graphene. The asymmetric supercapacitor (ASC) device is denoted as Nd(OH)3/G‖AC; a poly(vinylidene fluoride) electrospun membrane soaked in 6 M KOH was used as a separator as well as the electrolyte. The ASC device functions in an optimized potential window of 1.6 V with an energy density of 40 W h kg-1. Furthermore, the ASC device exhibits excellent capacitance retention of 85.3% with a Coulombic efficiency of 97% even after 5000 cycles. This new hybrid electrode material shows impressive performance and can be used as an electrode material for asymmetric supercapacitors.

Graphical abstract: Facile synthesis of electrostatically anchored Nd(OH)3 nanorods onto graphene nanosheets as a high capacitance electrode material for supercapacitors

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Publication details

The article was received on 13 Nov 2017, accepted on 12 Jan 2018 and first published on 12 Jan 2018


Article type: Paper
DOI: 10.1039/C7NJ04335J
Citation: New J. Chem., 2018,42, 2923-2932
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    Facile synthesis of electrostatically anchored Nd(OH)3 nanorods onto graphene nanosheets as a high capacitance electrode material for supercapacitors

    S. Arunachalam, B. Kirubasankar, V. Murugadoss, D. Vellasamy and S. Angaiah, New J. Chem., 2018, 42, 2923
    DOI: 10.1039/C7NJ04335J

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