EP 0991593 A1 20000412 - LITHIUM BATTERY OPERATING UP TO AN UPPER VOLTAGE BOUNDARY OF 3.5 VOLTS
Title (en)
LITHIUM BATTERY OPERATING UP TO AN UPPER VOLTAGE BOUNDARY OF 3.5 VOLTS
Title (de)
LITHIUM-BATTERIE ARBEITEND BIS AUF EINE SPANNUNGSHÖHE VON 3,5VOLT
Title (fr)
ACCUMULATEUR AU LITHIUM FONCTIONNANT JUSQU'A UNE BORNE SUPERIEURE DE TENSION DE 3,5 VOLTS
Publication
Application
Priority
- FR 9900872 W 19990414
- FR 9804625 A 19980414
Abstract (en)
[origin: FR2777388A1] The invention concerns a lithium battery operating up to an upper voltage boundary of 3.5 volts and comprising a negative electrode, an electrolyte and a positive electrode characterised in that said positive electrode comprises as active material, and before it has been subjected to a particular charging or discharging operation, a manganese oxide containing lithium or extra lithium obtainable by the following three steps performed successively or simultaneously: preparing a lithium alkoxide solution by dissolving metal lithium in the corresponding alcohol, said alcohol being selected among alcohols derived from linear or branched alkanes containing at least 3 carbon atoms, alcohols derived from unsaturated aliphatic hydrocarbons, and their mixtures; adding a manganese oxide powder to said lithium alkoxide solution to obtain a dispersion; controlled reduction of said manganese oxide by said alkoxide until a manganese oxide containing lithium or extra lithium with a stoichiometry Li: Metal is obtained. Said method further comprises the following steps: evaporating the residual alcohol; washing the resulting powder; drying the powder.
IPC 1-7
IPC 8 full level
C01G 45/00 (2006.01); H01M 4/50 (2006.01); H01M 4/505 (2010.01); H01M 4/58 (2006.01); H01M 10/052 (2010.01); H01M 10/0525 (2010.01); H01M 10/36 (2006.01); H01M 10/40 (2006.01)
CPC (source: EP)
C01G 45/02 (2013.01); C01G 45/1228 (2013.01); H01M 4/505 (2013.01); C01P 2002/54 (2013.01); C01P 2002/72 (2013.01); C01P 2006/40 (2013.01); H01M 10/052 (2013.01); H01M 10/0525 (2013.01); Y02E 60/10 (2013.01)
Citation (search report)
See references of WO 9952826A1
Designated contracting state (EPC)
BE DE ES GB IT NL SE
DOCDB simple family (publication)
FR 2777388 A1 19991015; FR 2777388 B1 20000512; CA 2293842 A1 19991021; EP 0991593 A1 20000412; IL 133497 A0 20010430; JP 2002506561 A 20020226; WO 9952826 A1 19991021
DOCDB simple family (application)
FR 9804625 A 19980414; CA 2293842 A 19990414; EP 99913406 A 19990414; FR 9900872 W 19990414; IL 13349799 A 19990414; JP 55129399 A 19990414