Enhanced electrocatalytic activity of plasma functionalized multiwalled carbon nanotube-entrapped poly(3,4-ethylendioxythiophene): poly(styrene sulfonate) photocathode

Title
Enhanced electrocatalytic activity of plasma functionalized multiwalled carbon nanotube-entrapped poly(3,4-ethylendioxythiophene): poly(styrene sulfonate) photocathode
Authors
이용훈안동준고민재진화영진준형민남기
Keywords
dye-sensitized solar cell; electrocatalytic activity; oxygen plasma-functionalized carbon; nanotubes
Issue Date
2014-11
Publisher
Electrochimica acta
Citation
VOL 146, 68-72
Abstract
A composite of poly(3,4-ethylendioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) and multi-walled carbon nanotubes (MWNTs) was electrochemically polymerized on a fluorine-doped tin oxide (FTO) substrate and used as a photocathode for a dye-sensitized solar cell. The MWNTs were previously O2 plasma treated and simultaneously entrapped while the PEDOT:PSS film was electropolymerized. The resulting plasma-functionalized MWNT-entrapped PEDOT:PSS composite showed enhanced electrocatalytic activity for the reduction of I3− to I−, this was confirmed by scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and incident photon-to-current conversion efficiency (IPCE) measurements. An improved energy conversion efficiency by about 13.9% was observed in optimized conditions as compared to a platinized FTO-based photocathode.
URI
http://pubs.kist.re.kr/handle/201004/50565
ISSN
00134686
Appears in Collections:
KIST Publication > Conference Paper
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