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Issue 40, 2014
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A high-performance supercapacitor based on a polythiophene/multiwalled carbon nanotube composite by electropolymerization in an ionic liquid microemulsion

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Abstract

Polythiophene (PTh) was electrochemically polymerized onto the multiwalled carbon nanotube (MWCNT) modified carbon paper by a galvanostatic method in an oil-in-ionic liquid microemulsion (O/IL). The as-prepared PTh/MWCNT composite had an interlaced framework morphology, in which the MWCNTs were uniformly coated by PTh with a thickness of 2–3 nm. The capacitive performance of the as-prepared PTh/MWCNT composite was tested in 1 mol L−1 Na2SO4 solution. The results showed that the composite film had a favorable capacitance with a high electron transfer rate and low resistance. The highest specific capacitance could be achieved as high as 216 F g−1 with the charge loading of 300 mC at a current density of 1 A g−1. The PTh/MWCNT composite had a good cycle stability with a low fading rate of specific capacitance after 500 cycles. The results demonstrated the feasibility of the as-prepared PTh/MWCNT composite to be used as an electrode material for supercapacitors.

Graphical abstract: A high-performance supercapacitor based on a polythiophene/multiwalled carbon nanotube composite by electropolymerization in an ionic liquid microemulsion

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Article information


Submitted
02 Jul 2014
Accepted
19 Aug 2014
First published
19 Aug 2014

J. Mater. Chem. A, 2014,2, 17024-17030
Article type
Paper

A high-performance supercapacitor based on a polythiophene/multiwalled carbon nanotube composite by electropolymerization in an ionic liquid microemulsion

H. Zhang, Z. Hu, M. Li, L. Hu and S. Jiao, J. Mater. Chem. A, 2014, 2, 17024
DOI: 10.1039/C4TA03369H

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