The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 2005
Filed:
Aug. 13, 1998
Mathias Benz, Goslar, DE;
Wolfgang Kummer, Goslar, DE;
Evelyn Pross, Albbruck, DE;
Josef Schmoll, Goslar, DE;
Wolfgang Schweda, Rhüden, DE;
Daniel Duff, Leverkusen, DE;
Ricarda Leiberich, Langen, DE;
Christoph Schild, Leverkusen, DE;
Ulrich Krynitz, Goslar, DE;
Juliane Meese-marktscheffel, Goslar, DE;
Viktor Stoller, Bad Harzburg, DE;
Mathias Benz, Goslar, DE;
Wolfgang Kummer, Goslar, DE;
Evelyn Pross, Albbruck, DE;
Josef Schmoll, Goslar, DE;
Wolfgang Schweda, Rhüden, DE;
Daniel Duff, Leverkusen, DE;
Ricarda Leiberich, Langen, DE;
Christoph Schild, Leverkusen, DE;
Ulrich Krynitz, Goslar, DE;
Juliane Meese-Marktscheffel, Goslar, DE;
Viktor Stoller, Bad Harzburg, DE;
H. C. Starck GmbH & Co, Goslar, DE;
Abstract
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.