H. C. Starck, Gmbh & Co Kg

H. C. Starck Gmbh & Co

Mathias Benz

Juliane Meese-Marktscheffel

Viktor Stoller

Wolfgang Kummer

Ulrich Krynitz

Evelyn Pross

Ricarda Leiberich

Josef Schmoll

Christoph Schild

Daniel Gordon Duff

Wolfgang Schweda

Daniel Duff

The invention relates to a method for producing lithium-transition metal mixtures of general formula Li(MM)O, wherein Mrepresents nickel, cobalt or manganese, Mrepresents chromium, cobalt, iron, manganese, molybdenum or aluminium, and is different from M, n is 2 if Mrepresents 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 Mcompound is used in powder form having a specific surface of at least 20 m/g (BET) and calcination is carried out in a fluidised bed.

Method for producing lithium-transition metal mixtures

The invention relates to a method for producing lithium transition metalates of the general formula (I): Li (M M ) O , where M represents lithium, cobalt or manganese; M represents cobalt, iron, manganese or aluminium and is not equal to M ; n is equal to 2 if M1&equals;M, and 1 in all other cases; x is a number between 0.9 and 1.2; y is a number between 0.5 and 1.0; and z is a number between 1.9 and 2.1. According to the method, an intimate solid mixture is produced of oxygen-containing compounds of the transition metals and oxygen-containing lithium compounds and this mixture calcinated in a reactor, whereby calcination takes place at least partly at an absolute pressure of less than 0.5 bar.

Method for producing lithium transition metallates

Growing community of inventors

Goslar, Germany

Mathias Benz