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Layered manganese oxide intergrowth electrodes for rechargeable lithium batteries [electronic resource] : Part 2. Substitution with Al.

Published
Washington, D.C. : United States. Dept. of Energy, 2004.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
40 pages : digital, PDF file
Additional Creators
Lawrence Berkeley National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The structural and electrochemical characterization of layered LiₓAl{sub y}Mn{sub 1-y}O₂ compounds prepared from sodium-containing precursors is described. A quaternary phase diagram showing composition ranges for pure P2 and P3 structures and P2/P3 intergrowths obtained in the Na-Al-Mn-O system is presented. Upon ion exchange, these compounds change to O2, O3 or O2/O3 stacking arrangements, respectively. The oxygen array in O3 and spinel structures is similar, and most of the O3 structures convert to spinel rapidly upon electrochemical cycling in lithium cells. This process is delayed somewhat by increased Al substitution, but not completely inhibited. More effective suppression of the phase transformation is observed in O2/O3 intergrowth electrodes. Additionally, the capacity retention upon cycling and the rate behavior of cells containing intergrowth electrodes is superior to those with pure O2 structures.
Report Numbers
E 1.99:lbnl--56268-pt.-2
lbnl--56268-pt.-2
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Other Subject(s)
Note
Published through SciTech Connect.
09/08/2004.
"lbnl--56268-pt.-2"
Chemistry of Materials 17 5 FT
Doeff, Marca M.; Dolle, Mickael; Patoux, Sebastien.
Funding Information
AC03-76SF00098
500301
View MARC record | catkey: 14100313