H. C. Starck, Gmbh & Co Kg

Bayer Aktiengesellschaft

H. C. Starck Gmbh & Co

Ulrich Krynitz

Armin Olbrich

Wolfgang Kummer

Juliane Meese-Marktscheffel

Viktor Stoller

Dirk Naumann

Mathias Benz

Evelyn Pross

Ricarda Leiberich

Josef Schmoll

Gerhard Gille

Christoph Schild

Daniel Gordon Duff

Bernd Mende

Martin Schloh

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

Method for the decomposition and recovery of metallic constituents from

Cobalt/cobalt oxide powder having the composition Co.sub.x (CoO).sub.1-x, where x is from 0.02 to 5, and a process for its production and use in nickel hydroxide electrodes for secondary batteries to enhance capacity.

Cobalt/cobalt oxide powder

The invention relates to a process for the production of pure nickel hydroxide by anodic oxidation of metallic nickel in aqueous electrolyte solution in the presence of sulfate ions and removal of the nickel hydroxide formed and to the use of the nickel hydroxide thus produced.

Process for the production of pure nickel hydroxide and its use

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Goslar, Germany

Ulrich Krynitz