Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/36360
Title: Study of PEDOT-PSS in carbon nanotube/conducting polymer composites as supercapacitor electrodes in aqueous solution
Authors: Yang, Q
Pang, SK
Yung, KC 
Keywords: Multiwalled carbon nanotube
PEDOT-PSS
PTFE
Composite electrode
Supercapacitor electrode
Issue Date: 2014
Publisher: Elsevier
Source: Journal of electroanalytical chemistry, 2014, v. 728, p. 140-147 How to cite?
Journal: Journal of electroanalytical chemistry 
Abstract: Supercapacitor electrodes fabricated from multiwalled carbon nanotubes (MWCNTs) and poly-3,4-ethlyenedioxythiophene-polystyrenesulfonate (PEDOT-PSS) with different mass ratios (MWCNTs:PEDOT-PSS = 95:5,90:10, 70:30,50:50) were examined and compared with the electrode composed of MWCNTs and polytetrafluoroethylene (PTFE). The cyclic voltammetry (CV) results show that the MWCNTs/5 wt% PEDOT-PSS composite owns the highest specific capacitance, while the MWCNTs/50 wt% PEDOT-PSS composite can maintain the best capacitive behavior at higher scan rates and frequencies from the CV and EIS (electrochemical impedance spectroscopy) data. The EIS and CV results show the loss of electroactive species in PEDOT-PSS during continuous cycling. The transmission electron microscopy shows that the MWCNTs are partly covered with the polymers. The results of time-of-flight secondary ion mass spectrometry and X-ray photoelectron spectrometry reveal that the conjugation path in the backbone of PEDOT is damaged, leading to the decline of the redox peaks in CV for the MWCNTs/PEDOT-PSS composites during continuous cycling. Whereas, the -SO3- groups in PSS retains integrity during continuous cycling, and they can still contribute to the capacitance of the composite; therefore, when compared with the MWCNTs/10 wt% PTFE composite, the MWCNT5/10 wt% PEDOT-PSS composite can remain higher specific capacitance, and maintain the capacitive characteristics at higher scan rates.
URI: http://hdl.handle.net/10397/36360
ISSN: 1572-6657
DOI: 10.1016/j.jelechem.2014.06.033
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

13
Last Week
0
Last month
Citations as of May 20, 2017

WEB OF SCIENCETM
Citations

14
Last Week
0
Last month
Citations as of May 20, 2017

Page view(s)

23
Last Week
2
Last month
Checked on May 21, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.