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:
Sep. 10, 2002
Filed:
Aug. 19, 1999
Ulrich Krynitz, Goslar, DE;
Wolfgang Kummer, Goslar, DE;
Mathias Benz, Bergisch Gladbach, DE;
Juliane Meese-Marktscheffel, Goslar, DE;
Evelyn Pross, Albbruck, DE;
Viktor Stoller, Bad Harzburg, DE;
H.C. Starck GmbH & Co. KG, Gosler, DE;
Abstract
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=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.