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Study of Supercapacitive activity of Eu-MOF as an electrode material

Abstract

High surface area and redox activity are indispensable characteristics for a material to be considered as an electrode material in pseudocapacitors. In this regard, redox active metals-based metal-organic frameworks (MOFs) with high surface area, can function as supercapacitors. In this research study, a hydrothermal process was applied to synthesize Eu-based metal-organic framework (Eu-MOF) [Eu2(fma)2(ox)(H2O)4.4H2O] (fma = fumarate and ox = oxalate). The supercapacitive activity of Eu-MOF was investigated by instrumental analyses of cyclic voltammetry (CV), galvanostatic charge/discharge, and electrochemical impedance spectroscopy (EIS) measurements in 6 M KOH as an electrolyte. The Eu-MOF exposed a specific capacitance of 468 F g-1 at a discharge current density of 1 A g-1, and 95.2% capacitance retention after 4000 cycles. To the best of our knowledge, this study is considered as the start point of using lanthanide-MOF as an electrode material for supercapacitors and the results obviously consent to outstanding properties of Eu-MOF for the mentioned application.

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Publication details

The article was received on 26 Feb 2019, accepted on 10 May 2019 and first published on 11 May 2019


Article type: Paper
DOI: 10.1039/C9NJ00980A
New J. Chem., 2019, Accepted Manuscript

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    Study of Supercapacitive activity of Eu-MOF as an electrode material

    A. Shiralizadeh Dezfuli, E. kohan, H. R. Naderi and E. Salehi , New J. Chem., 2019, Accepted Manuscript , DOI: 10.1039/C9NJ00980A

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