Li Ion Diffusion Measurements in V2O5 and Li(Co1-xAlx)O2 Thin-Film Battery Cathodes

Jeanne M. McGraw, Christian S. Bahn, Philip A. Parilla, John D. Perkins, Dennis W. Readey, David S. Ginley

Research output: Contribution to journalArticlepeer-review

120 Scopus Citations


Thin films of V2O5 and LiCoO2 were deposited by pulsed laser deposition (PLD) and the chemical diffusion coefficients, D were measured by potentiostatic intermittent titration technique (PITT). The PLD-grown V2O5 and LiCoO2 films are electrochemically similar to bulk powders and thin films produced by other techniques. In crystalline V2O5, the maximum and minimum D were found to be 1.7 × 10-12 cm2 s-1 and 5.8 × 10-15 cm2 s-1 respectively, with a general trend for D̃ to rise in single-phase regions. In amorphous V2O5 films, D̃ was initially 5 × 10-13 cm2 s-1 and decreased steadily to 1.2 × 10-13 cm2 s-1 at Li0.4V2O5. The decrease in D̃ then became more gradual with a final value of 5.52 × 10-14 cm2 s-1 at Li1.5V2O5. The chemical diffusion coefficient of Li in LiCoO2 films ranged from 1 × 10-12-4 × 10-11 cm2 s-1 with a pronounced minimum at Li0.7CoO2. Thin films of LiCo0.5Al0.5O2 also deposited by PLD exhibited limited cycling capabilities and an upper bound of D̃ = 9 × 10-13 cm2 s-1.

Original languageAmerican English
Pages (from-to)187-196
Number of pages10
JournalElectrochimica Acta
Issue number1-2
StatePublished - 1999

NREL Publication Number

  • NREL/JA-520-27895


  • Amorphous
  • Chronoamperometry
  • Crystalline
  • Li diffusion
  • Licoalo
  • Licoo
  • Pulsed laser deposition
  • Thin film
  • Vo


Dive into the research topics of 'Li Ion Diffusion Measurements in V2O5 and Li(Co1-xAlx)O2 Thin-Film Battery Cathodes'. Together they form a unique fingerprint.

Cite this