Method for producing lithium-transition metal mixtures

Details Method for producing lithium-transition metal mixtures Method for producing lithium-transition metal mixtures

2005-04-05

2005-04-05

Silverman, Stanley S. (Department: 1754)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C252S182100, C423S593100, C423S594200, C423S594400, C423S594600, C423S596000, C423S599000, C423S600000

Reexamination Certificate

active

06875416

ABSTRACT:
The invention relates to a method for producing lithium-transition metal mixtures of general formula Lix(M1yM21-y)nOnz, wherein M1represents nickel, cobalt or manganese, M2represents chromium, cobalt, iron, manganese, molybdenum or aluminium, and is different from M1, n is 2 if M1represents manganese and is 1 otherwise, x is comprised between 0.9 and 1.2, y is comprised between 0.5 and 1.0 and z is comprised between 1.9 and 2.1. According to the inventive method, an intimate mixture composed of transition metal compounds containing oxygen and of a lithium compound containing oxygen is calcinated, said mixture being obtained by processing a solid powder transition metal compound with a solution of said lithium compound, and then drying. At least the M1compound is used in powder form having a specific surface of at least 20 m2/g (BET) and calcination is carried out in a fluidised bed.

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