Rankings
Publications
Sources
Publishers
Scholars
Organizations
About
Login
Register
Home
Publications
Preferred Orientation of Polycrystalline LiCoO[sub 2] Films
Home
Publications
Preferred Orientation of Polycrystalline LiCoO[sub 2] Films
Preferred Orientation of Polycrystalline LiCoO[sub 2] Films
JB
J. B. Bates
J. B. Bates
ND
N. J. Dudney
N. J. Dudney
BN
B. J. Neudecker
B. J. Neudecker
FH
F. X. Hart
F. X. Hart
HJ
H. P. Jun
H. P. Jun
SH
S. A. Hackney
S. A. Hackney
Top Cited Papers
Publisher Website
Google Scholar
Cite
Download
Share
Download
1 January 2000
journal article
Published by
The Electrochemical Society
in
Journal of the Electrochemical Society
Vol. 147
(1)
,
59-70
https://doi.org/10.1149/1.1393157
Abstract
Polycrystalline films of deposited by radio frequency magnetron sputtering exhibited a strong preferred orientation or texturing after annealing at 700°C. For films thicker than about 1 μm, more than 90% of the grains were oriented with their (101) and (104) planes parallel to the substrate and less than 10% with their (003) planes parallel to the substrate. As the film thickness decreased below 1 μm, the percentage of (003)‐oriented grains increased until at a thickness of about 0.05 μm, 100% of the grains were (003) oriented. These extremes in texturing were caused by the tendency to minimize volume strain energy for the thicker films or the surface energy for the very thin films. Films were deposited using different process gas mixtures and pressures, deposition rates, substrate temperatures, and substrate bias. Of these variables, only changes in substrate temperature could cause large changes in texturing of thick films from predominately (101)–(104) to (003). Although lithium ion diffusion should be much faster through cathodes with a high percentage of (101)‐ and (104)‐oriented grains than through cathodes with predominately (003)‐oriented grains, it was not possible to verify this expectation because the resistance of most cells was dominated by the electrolyte and electrolyte‐cathode interface. Nonetheless, cells with cathodes thicker than about 2 μm could deliver more than 50% of their maximum energies at discharge rates of or higher. © 2000 The Electrochemical Society. All rights reserved.
Keywords
PARALLEL
ORIENTED
POLYCRYSTALLINE
ELECTROLYTE
PLANES
THICKER THAN
PREFERRED
PREDOMINATELY
All Articles
Open Access
Cited by 298 articles