Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Journal articles
  4. Electrochemical Properties of the Supramolecular Assembly of Ruthenium(II)-bipyridine Complex with Single-Walled Carbon Nanotubes
 
research article

Electrochemical Properties of the Supramolecular Assembly of Ruthenium(II)-bipyridine Complex with Single-Walled Carbon Nanotubes

Kavan, L.  
•
Zakeeruddin, S. M.  
•
Exnar, I.  
Show more
2009
Journal of The Electrochemical Society

The supramolecular assembly of Ru-bipyridine complex, coded Z-907Na, with single-walled carbon nanotube (SWNT) exhibits unique redox behavior, which is applicable for the nanotube wiring of LiFePO4 (olivine). Cyclic voltammograms of thin films of Z-907Na/SWNT reveal two pairs of peaks labeled C-1 and C-2 with formal redox potentials of ca. 3.6 and 3.8 V vs Li/Li+, respectively, indicating two surface-confined redox couples. The same behavior was also found for the Z-907Na adsorbed on carbon black, but not for the Z-907Na adsorbed on Al2O3 or dissolved in the electrolyte solution. In these cases, a single diffusion-controlled voltammogram is observed, with one redox couple at ca. 3.6 V vs Li/Li+. The diffusion coefficients equal 7.8x10(-10) cm(2)/s (for Z-907Na adsorbed on Al2O3) or 1.5x10(-6) cm(2)/s (for Z-907Na in solution). An interpretation is suggested that the C-1 peak is for a hydrophilic interaction, that is anchoring of Z-907Na to the carbon surface via carboxylic groups, and the C-2 peak is for a hydrophobic anchoring, that is interaction with the carboxyl-free bipyridine ligand with the carbon surface. The existence of C-1/C-2 peaks provides further insight into the nanotube wiring of LiFePO4 (olivine) using various nanotubes.

  • Details
  • Metrics
Type
research article
DOI
10.1149/1.3056051
Web of Science ID

WOS:000263717900068

Author(s)
Kavan, L.  
•
Zakeeruddin, S. M.  
•
Exnar, I.  
•
Graetzel, M.  
Date Issued

2009

Publisher

Electrochemical Society

Published in
Journal of The Electrochemical Society
Volume

156

Issue

4

Start page

K44

End page

K50

Subjects

adsorbed layers

•

aluminium compounds

•

carbon nanotubes

•

diffusion

•

electrolytes

•

iron compounds

•

lithium compounds

•

organic compounds

•

oxidation

•

reduction (chemical)

•

ruthenium compounds

•

thin films

•

voltammetry (chemical analysis)

•

Sensitized Solar-Cells

•

Lifepo4 Olivine

•

Charge-Transfer

•

Nanocrystals

•

Electrodes

•

Conversion

•

Light

•

Acid

•

Cn

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPI  
Available on Infoscience
March 11, 2010
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/48022
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés