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

Yong Hoon Rhee, Dong June Ahn, Min Jae Ko, Hwa Young Jin, Joon Hyung Jin, Nam Ki Min

Research output: Contribution to journalArticle

11 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)68-72
Number of pages5
JournalElectrochimica Acta
Volume146
DOIs
Publication statusPublished - 2014 Nov 10

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Carbon Nanotubes
Photocathodes
Styrene
Carbon nanotubes
Fluorine
Tin oxides
Plasmas
Conversion efficiency
Composite materials
Electrochemical impedance spectroscopy
Energy conversion
Cyclic voltammetry
Photons
Scanning electron microscopy
Substrates
stannic oxide

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)

Cite this

Enhanced electrocatalytic activity of plasma functionalized multi-walled carbon nanotube-entrapped poly(3,4-ethylendioxythiophene) : poly(styrene sulfonate) photocathode. / Rhee, Yong Hoon; Ahn, Dong June; Ko, Min Jae; Jin, Hwa Young; Jin, Joon Hyung; Min, Nam Ki.

In: Electrochimica Acta, Vol. 146, 10.11.2014, p. 68-72.

Research output: Contribution to journalArticle

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AU - Ahn, Dong June

AU - Ko, Min Jae

AU - Jin, Hwa Young

AU - Jin, Joon Hyung

AU - Min, Nam Ki

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AB - 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.

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