Flexible solid–state supercapacitor of metal–organic framework coated on carbon nanotube film interconnected by electrochemically ‐codeposited PEDOT‐GO. Issue 2 (22nd February 2016)

• Record Type: Journal Article
• Authors: Fu, Dongying; Zhou, Haihan; Zhang, Xian‐Ming; Han, Gaoyi; Chang, Yunzhen; Li, Haowen
• Is Part Of: ChemistrySelect. Volume 1:Issue 2(2016)
• Page Start: 285
• Page End: 289
• Publication Date: 2016-02-22
• Subjects: Solid-state supercapacitors -- Carbon nanotube film -- Poly (3, 4-ethylenedioxythiophene) -- Graphene oxide -- Areal capacitance; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201600084
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: In this study, zirconium‐based metal organic framework (MOF) (UiO‐66) has been synthesized and coated on carbon nanotube film (CNTF) (noted as U−C), the following is electrochemically codeposited poly(3, 4‐ethylenedioxythiophene)‐graphene oxide (PEDOT‐GO) on U−C to obtain a flexible porous electrode (PEDOT‐GO/U−C). The electrochemical measurements including cyclic voltammetry, impedance spectroscopy and galvanostatic charge/discharge have been performed. Electrochemical studies show that the PEDOT‐GO/U−C electrode exhibits an exceptionally areal capacitance of 102 mF cm −2 at 10 mV s −1 than that of PEDOT/U−C electrode (89 mF cm −2 ) with a three‐electrode system, indicating the existence of GO in the composites effectively improve the capacitive performance of PEDOT/U−C. Moreover, there is a synergistic effect between UiO‐66, PEDOT and GO sheets. A device of PEDOT‐GO/U−C has also been assembled and tested. The optimum device shows the energy and power densities of 0.0022 mWh cm −2 and 0.2 mW cm −2 at the current density of 0.4 mA cm −2 . The device exhibits the excellent flexible properties under different curvature conditions. Abstract : In this study, zirconium‐based metal organic framework (MOF) (UiO‐66) was synthesized and coated on carbon nanotube film (CNTF, noted as U−C). Poly(3, 4‐ethylenedioxythiophene)‐graphene oxide (PEDOT‐GO) was then electrochemically codeposited on U−C to obtain a flexible porous electrode (PEDOT‐GO/U−C). PEDOT‐GO/U−C has excellent properties for flexible supercapacitors.