Electrochemical Behavior and Li Diffusion Study of LiCoO₂ Thin Film Electrodes Prepared by PLD
Name
AMMNS001.pdf
Size
1.12 MB
Format
Adobe PDF
Checksum (MD5)
79368e827453080423e8d1c330e178b7
Author(s)
Xia, H.
Meng, Shirley Y.
Lu, Li
Ceder, Gerbrand
Date Issued
January 2007
Series/Report no.
Advanced Materials for Micro- and Nano-Systems (AMMNS)
Abstract
Preferred c-axis oriented LiCoO₂ thin films were prepared on the SiO₂/Si (SOS) substrates by pulsed laser deposition (PLD). Thin film electrodes without carbon and binder are ideal samples to study the electrochemical properties of materials. We did galvanostatic charge/discharge measurements between 3 and 4.7 V on the Li/LiCoO₂ cell to study its electrochemical behavior. Potentiostatic intermittent titration technique (PITT) was used to measure the Li diffusivity in the LixCoO₂ film at different Li concentrations (0.15 < x < 0.75). The dependence of Li diffusivity on the c-lattice parameter and valence of cobalt ions is discussed.
Subjects
LiCoO₂
Thin Film
Li Diffusion
Pulsed Laser Deposition
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