Process for producing a positive electrode for lithium...

Details Process for producing a positive electrode for lithium... Process for producing a positive electrode for lithium...

H - Electricity

01

M

H01M 4/04 (2006.01) C01G 45/00 (2006.01) H01M 4/48 (2006.01) H01M 4/50 (2006.01)

Patent

CA 2129716

Abstract of the Disclosure An active material for a positive electrode for lithium secondary batteries and composed of a lithium-manganese oxide (LixMn2O4) with a spinel structure is produced by mixing manganese dioxide with lithium formate (HCOOLi) and/or lithium acetate (CH3COOLi), heating the resulting mixture for 10 to 100 hours, preferably at a temperature of from 600°C to 750°C, and if necessary, grinding the heated mixture. The constituents of the mixture contain manganese and lithium in a molar ratio (Mn:Li) of 2:x, where 0.5 < x < 1.5. The resulting product has an extremely fine crystallinity and exhibits good cycling stability.

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