Mesoporous anatase Ti O2 electrodes modified by metal deposition

Electrochemical characterization and high rate performances

M. Mancini, Pierre Kubiak, M. Wohlfahrt-Mehrens, R. Marassi

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

We propose the optimization of the electrochemical properties of Ti O 2 mesoporous anatase electrodes for lithium-ion batteries by coating with thin Cu or Sn metal layers. The vacuum deposition of Cu or Sn causes no changes in the anatase structure. The metal/anatase composite electrodes show improved kinetics of Li insertion/extraction reactions and excellent electrochemical performances in terms of capacity, stability, and fast-cycling abilities. The higher electrochemical performances are ascribed to an enhanced lithium desolvation and wetting properties at the interface between electrode and electrolyte and to faster lithium diffusion into the anatase lattice. Due to the relatively easy modification procedure, the thin metal coating by physical vapor deposition appears to be a very promising optimization method for the development of high rate performance materials for lithium-ion batteries.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume157
Issue number2
DOIs
Publication statusPublished - 2010
Externally publishedYes

Fingerprint

anatase
Titanium dioxide
lithium
Metals
Electrodes
electrodes
Lithium
metals
electric batteries
metal coatings
Vacuum deposition
Metal coatings
optimization
vacuum deposition
Physical vapor deposition
Electrochemical properties
Electrolytes
wetting
Wetting
insertion

ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

Cite this

Mesoporous anatase Ti O2 electrodes modified by metal deposition : Electrochemical characterization and high rate performances. / Mancini, M.; Kubiak, Pierre; Wohlfahrt-Mehrens, M.; Marassi, R.

In: Journal of the Electrochemical Society, Vol. 157, No. 2, 2010.

Research output: Contribution to journalArticle

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