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. Molecular Wiring of Olivine LiFeP04 by Ruthenium(II)-Bipyridine Complexes and by Their Assemblies with Single-Walled Carbon Nanotubes
 
research article

Molecular Wiring of Olivine LiFeP04 by Ruthenium(II)-Bipyridine Complexes and by Their Assemblies with Single-Walled Carbon Nanotubes

Kavan, L.  
•
Exnar, I.  
•
Zakeeruddin, S.M.  
Show more
2008
Journal of Physical Chemistry C

The undoped and carbon-free olivine, LiFePO4 was bonded with 5% PVDF, and deposited on F-doped SnO2 support (FTO). The electrodes were modified by a monolayer of three different complexes: NaRu(4,4′-dicarboxylic acid-2,2′-bipyridine)(4,4′-dinonyl-2,2′-bipyridine)(NCS)2, coded as Z-907Na, Ru-bis(4,4′-diethoxycarbonyl-2,2′-bipyridine)(4,4′-dicarboxylic acid-2,2′-bipyridine), coded Z-974, and Ru-bis(4,4′-dicarboxylic acid-2,2′-bipyridine)(4,4′-dinonyl-2,2′-bipyridine), coded Z-975. These complexes have redox potentials from 3.5 to 4.45 V versus Li/Li+ and are active for molecular wiring of LiFePO4. The Ru-complexes contacting FTO are reversibly oxidized, which allows the holes to be transported via the adsorbed monolayer across the olivine surface, where a subsequent chemical delithiation occurs toward FePO4. The supramolecular assembly of Z-907Na with single-walled carbon nanotubes (SWNT) is more active for molecular wiring than pure Z-907Na. In this case, the LiFePO4/FePO4 system can be charged/discharged by currents larger by 1 order of magnitude, and the performance of the assembly depends on the type of SWNT. This study improved our understanding of molecular wiring in general, and the enhancement of wiring activity by SWNT in particular.

  • Details
  • Metrics
Type
research article
DOI
10.1021/jp8001433
Web of Science ID

WOS:000256492500036

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

2008

Published in
Journal of Physical Chemistry C
Volume

112

Issue

23

Start page

8708

End page

8714

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPI  
Available on Infoscience
December 4, 2008
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/32157
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