C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
C01G 45/02 (2006.01) C01D 15/02 (2006.01) C01G 45/00 (2006.01) H01M 4/24 (2006.01) H01M 4/50 (2006.01)
Patent
CA 2152226
The invention relates to the preparation of insertion compounds based on manganese oxide, usable as the positive electrode active material in a lithium battery. These compounds in the hatched area of Fig. 1 can be prepared by reacting in the solid state a manganese oxide powder MnO2-.beta., having a specific surface below 7 m2/g and an average grain size below 10 µm, with a powder of a lithium compound such as Li2CO3 or LiOH, at a temperature of 150 to 500°C for an adequate time to convert the .beta.-MnO2 into manganese and lithium oxide having a lacunary or stoichiometric spinel structure.
Bloch Didier
Le Cras Frederic
Strobel Pierre
Bloch Didier
Bollore Technologies S.a.
Commissariat A. L'energie Atomique
Electricite de France Service Nattional
Goudreau Gage Dubuc
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