AN INVESTIGATION OF SPINEL-RELATED AND ORTHORHOMBIC LIMNO2 CATHODES FOR RECHARGEABLE LITHIUM BATTERIES

Citation
Rj. Gummow et Mm. Thackeray, AN INVESTIGATION OF SPINEL-RELATED AND ORTHORHOMBIC LIMNO2 CATHODES FOR RECHARGEABLE LITHIUM BATTERIES, Journal of the Electrochemical Society, 141(5), 1994, pp. 1178-1182
Citations number
16
Categorie Soggetti
Electrochemistry
ISSN journal
00134651
Volume
141
Issue
5
Year of publication
1994
Pages
1178 - 1182
Database
ISI
SICI code
0013-4651(1994)141:5<1178:AIOSAO>2.0.ZU;2-Q
Abstract
Cathode materials that have been synthesized by reduction of lithium-m anganese-oxide and manganese-oxide precursors with hydrogen at 300 to 350-degrees-C, and with carbon at 600-degrees-C have been evaluated in rechargeable lithium cells. The cathodes which initially have a compo sition close to LiMnO2 contain structures related to the lithiated-spi nel phase Li2[Mn2]O4 and/or orthorhombic LiMnO2. The orthorhombic LiMn O2 component transforms gradually to a spinel structure on cycling. Th ese cathodes are significantly more tolerant to repeated lithium inser tion and extraction, when cycled over both the 4 and 3 V regions, than a standard Lix[Mn2]O4 spinel electrode (0 < x < 2).