Flexible Solid-State Supercapacitor Based on a Metal–Organic Framework Interwoven by Electrochemically-Deposited PANI
Top Cited Papers
- 14 April 2015
- journal article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 137 (15), 4920-4923
- https://doi.org/10.1021/jacs.5b01613
Abstract
Metal-organic frameworks (MOFs) have received increasing attention as promising electrode materials in supercapacitors (SCs). Yet poor conductivity in most MOFs largely thwarts their capacitance and/or rate performance. In this work, an effective strategy was developed to reduce the bulk electric resistance of MOFs by interweaving MOF crystals with polyaniline (PANI) chains that are electrochemically deposited on MOFs. Specifically we synthesized cobalt-based MOF crystals (ZIF-67) onto carbon cloth (CC) and further electrically deposited PANI to give a flexible conductive porous electrode (noted as PANI-ZIF-67-CC) without altering the underlying structure of the MOF. Electrochemical studies showed that the PANI-ZIF-67-CC exhibits an extraordinary areal capacitance of 2146 mF cm(-2) at 10 mV s(-1). A symmetric flexible solid-state supercapacitor was also assembled and tested. This strategy may shed light on designing new MOF-based supercapacitors and other electrochemical devices.Keywords
Funding Information
- Ministry of Science and Technology of the People's Republic of China (2013CB834704)
- National Natural Science Foundation of China (21201018, 21404010, 21471018)
- Central Committee of the Communist Party of China
- Provincial Key Project of China (7131253)
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