LITHIUM EXTRACTION FROM ORTHORHOMBIC LITHIUM MANGANESE OXIDE AND THE PHASE-TRANSFORMATION TO SPINEL

Authors
GUMMOW RJ LILES DC THACKERAY MM
Citation
Rj. Gummow et al., LITHIUM EXTRACTION FROM ORTHORHOMBIC LITHIUM MANGANESE OXIDE AND THE PHASE-TRANSFORMATION TO SPINEL, Materials research bulletin, 28(12), 1993, pp. 1249-1256
Citations number
19
Categorie Soggetti
Material Science
Journal title
Materials research bulletin → ACNP
ISSN journal
00255408
Volume
28
Issue
12
Year of publication
1993
Pages
1249 - 1256
Database
ISI
SICI code
0025-5408(1993)28:12<1249:LEFOLM>2.0.ZU;2-M
Abstract
Orthorhombic LiMnO2 products, synthesised by the reaction of gamma-MnO 2 and LiOH in argon at 600-620 degrees C using carbon as a reducing ag ent, have been evaluated as electrode materials in lithium cells. Prod ucts that contained a minor proportion of a lithiated spinel phase sho wed greater electrochemical activity than pure LiMnO2. On delithiation , LiMnO2 transforms irreversibly to a spinel-type structure. A mechani sm for the orthorhombic LixMnO2-spinel phase transformation is propose d.