Lithiated manganese oxide cathodes for rechargeable lithium batteries
- EIC Labs., Inc., Norwood, MA (United States)
Lithiated manganese oxide Li{sub x}Mn{sub y}O{sub z} prepared at the low temperature of 400--450 C exhibited significantly different electrochemical properties than the spinel phase, LiMn{sub 2}O{sub 4}, formed at 650--850 C. The former was non-stoichiometric and yielded a capacity of {approximately} 0.7 Li/Mn{sub 2} unit at {approximately} 2.8 V in polymer electrolyte-based Li cells. Its excellent rechargeability was demonstrated by more than 100 charge/discharge cycles. Spinel LiMn{sub 2}O{sub 4} was formed by heating either a mixture of LiOH and MnO{sub 2} or LiCO{sub 3} and MnCO{sub 3}. The latter reaction yielded micron-sized LiMn{sub 2}O{sub 4}. Its capacity of {approximately} 0.8 Li/LiMn{sub 2}O{sub 4} at {approximately} 4 V was highly reversible. AA-size Li-ion cells with spinel LiMn{sub 2}O{sub 4} exhibited 100 Wh/Kg and 280 Wh/{ell}.
- OSTI ID:
- 382701
- Report Number(s):
- CONF-960112-; ISBN 0-7803-2994-5; TRN: IM9645%%252
- Resource Relation:
- Conference: 11. annual battery conference on applications and advances, Long Beach, CA (United States), 9-12 Jan 1996; Other Information: PBD: 1996; Related Information: Is Part Of The eleventh annual battery conference on applications and advances: Proceedings; PB: 355 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Preparation and electrochemical characterization of micron-sized spinel LiMn{sub 2}O{sub 4}
Physical and electrochemical characterization of quaternary Li-Mn-V-O spinel as positive materials for rechargeable lithium batteries