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Preparation and energy storage application of a long-life and high-rate performing pseudocapacitive COF material linked with -NH- bonds

Abstract

A new covalent organic framework material (NWNU-COF-1) linked by -NH- bond is synthesized by the condensation reaction of melamine and 2,4,6-trichloro-1,3,5-triazine and its structure and properties are characterized by fourier transform infrared spectra (FT-IR), powder X-ray diffraction (XRD), thermogravimetric analysis(TGA), N2 adsorption-desorption, X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy(SEM). The BET specific surface area of NWNU-COF-1 is 301.149 m2∙g-1, and the pore size is about 1.41 nm. The preparation is also simple and cheap. This material exhibits a significant pseudocapacitance characteristic in the 6 M potassium hydroxide electrolyte, and the highest specific capacitance value of 155.38 F∙g-1 at 0.25 A∙g-1 current density in three electrode configuration. This COF also demonstrates about 100% capacitance retention after 20000 galvanostatic charge-discharge cycles, which is equal, even better compared with the COFs materials reported previously, the nano/mesoporous carbon materials and even nitrogen doped carbons.

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Publication details

The article was received on 21 Apr 2018, accepted on 06 Jul 2018 and first published on 10 Jul 2018


Article type: Paper
DOI: 10.1039/C8NJ01942H
Citation: New J. Chem., 2018, Accepted Manuscript
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    Preparation and energy storage application of a long-life and high-rate performing pseudocapacitive COF material linked with -NH- bonds

    R. Xue, H. Guo, L. Yue, T. Wang, M. Wang, Q. Li, H. Liu and W. Yang, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ01942H

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