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Lithium extraction/insertion from LiMn2O4 — effect of crystallinity

✍ Scribed by Tomoki Tsumura; Akira Shimizu; Michio Inagaki

Book ID
104296318
Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
288 KB
Volume
90
Category
Article
ISSN
0167-2738

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✦ Synopsis

Effect of host crystallinity on lithium extraction/insertion of LiMn,O, was studied. LiMn,O, powders with different crystallinity were prepared via lithium-manganese-tartrates by heat treatment at various temperatures above 300°C. First charge-discharge capacity around 4 V depended on lattice parameter a, and lattice strain E. On the other hand, the first discharge capacity around 3 V was found to be independent of these parameters.

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The structural features accompanying the lithium extraction/insertion process in a 6uorine-substituted spinel oxide with formula LiMn 2 (O 3.74 F 0.26 ) were studied in situ using Bellcoretype plastic batteries directly placed in a synchrotron X-ray beam. The initial material contains two phases, a