Effects of water content on electrochemical capacitive behavior of nanostructured Cu3(BTC)2 MOF prepared in aqueous solution. (1st February 2021)

• Record Type: Journal Article
• Authors: Irandoost, Eshagh; Farsi, Hossein; Farrokhi, Alireza
• Is Part Of: Electrochimica acta. Volume 368(2021)
• Publication Date: 2021-02-01
• Subjects: Metal organic framework -- MOF -- Water content -- Supercapacitor; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2020.137616
• Languages: English
• ISSNs: 0013-4686

Abstract

Highlights: We prepared Cu-BTC at room temperature in distilled water, which implies environmental compatibility. We investigated the effects of water content on the capacitive behavior of Cu-BTC. Our approach provides a method to find the appropriated temperature for fabrication the Cu-BTC electrodes. Abstract: In this study, we successfully prepare Cu3 (BTC)2 (commonly known as HKUST-1 or MOF-199) in aqueous media as a green method. The morphology and crystallinity of the prepared sample were studied by XRD, FT-IR, SEM, BET, and TGA. The effects of loss of uncoordinated and coordinated water molecules on the capacitive properties of Cu3 (BTC)2 were investigated using cyclic voltammetry, galvanostatic charge/discharge curves, and electrochemical impedance spectroscopy. The results show that removing the water molecules that are both uncoordinated and coordinated, enhances the areal capacitance of Cu3 (BTC)2 MOF up to 80 mF cm −2 at a current density of 0.2 mA cm −2 . Graphical abstract: Image, graphical abstract