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Issue 11, 2016
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Application of Ni/Co-based metal–organic frameworks (MOFs) as an advanced electrode material for supercapacitors

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Abstract

A Ni/Co-based bimetallic metal–organic framework (Ni/Co–MOF) [CoNi(μ3-tp)22-pyz)2] (tp = terephthalic acid and pyz = pyrazine) was synthesized through a hydrothermal method. Structural characterization revealed that metal centers are equally occupied by Co2+ and Ni2+ ions. The supercapacitive behavior of the synthesized Ni/Co–MOF was evaluated using cyclic voltammetry (CV), galvanostatic charge/discharge, and electrochemical impedance spectroscopy (EIS) measurements in 3 M KOH as electrolyte. The Ni/Co–MOF exhibited an outstanding specific capacitance of 1049 F g−1 at a discharge current density of 1 A g−1, good rate capability (642 F g−1 at 10 A g−1), and 97.4% capacitance retention after 5000 cycles. To the best of our knowledge, this is the first bimetallic MOF that is used in supercapacitors and its encouraging properties indicate that Ni/Co–MOF can be a promising candidate as an advanced electrode material for supercapacitors.

Graphical abstract: Application of Ni/Co-based metal–organic frameworks (MOFs) as an advanced electrode material for supercapacitors

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Publication details

The article was received on 08 May 2016, accepted on 07 Sep 2016 and first published on 08 Sep 2016


Article type: Paper
DOI: 10.1039/C6NJ01449F
Citation: New J. Chem., 2016,40, 9187-9193
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    Application of Ni/Co-based metal–organic frameworks (MOFs) as an advanced electrode material for supercapacitors

    H. Gholipour-Ranjbar, M. Soleimani and H. R. Naderi, New J. Chem., 2016, 40, 9187
    DOI: 10.1039/C6NJ01449F

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