Li Diffusion and High-Voltage Cycling Behavior of Thin-Film LiCoO2 Cathodes [electronic resource].
- Published:
- Washington, D.C. : United States. Dept. of Energy, 2001.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy - Physical Description:
- 14 pages : digital, PDF file
- Additional Creators:
- Oak Ridge National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Summary:
- Mass transport and thermodynamic properties of LiₓCoO₂ were studied by the potentiostatic intermittent titration technique (PITT) using solid-state thin-film batteries that provide a well-defined diffusion geometry. Both the chemical diffusion coefficient and the thermodynamic factor have minima at the phase boundaries of the Li/vacancy ordered phase ''Li{sub 0.5}CoO₂''. The self-diffusion coefficient of Li has a minimum at x = 0.5 associated with the Li/vacancy ordering. As the degree of ordering increases, the nonmonotonic variations become more pronounced when approaching x = 0.5 in LiₓCoO₂. We also show that thin-film LiCoO₂ cathodes having grains of sub-micrometer size combined with the Li upon electrolyte exhibit excellent capacity retention when charged up to 4.5 V.
- Report Numbers:
- E 1.99:p01-110459
p01-110459 - Subject(s):
- Note:
- Published through SciTech Connect.
10/02/2001.
"p01-110459"
200th Mtg of the Electrochem. Society, 52nd Mtg of the Intl' Society of Electrochemistry, San Francisco, CA (US), 09/02/2001--09/07/2001.
Jang, Y.-I. - Funding Information:
- AC05-00OR22725
View MARC record | catkey: 23765994