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:
Aug. 27, 1996
Filed:
Mar. 31, 1994
Rene Koksbang, San Jose, CA (US);
Other;
Abstract
A method of making an electrode active material of the nominal general formula LiV.sub.y O.sub.z where y is greater than 0 and up to about 3 and z is greater than 0 and up to about 8, comprises a series of steps. In the first step, lithium hydroxide is dispersed in an alcohol of the general formula C.sub.n H.sub.2n+1 OH. The alcohol and the hydroxide are each in an amount sufficient to provide a lithium alkoxide of the general formula LiOC.sub.n H.sub.2n+1. Next, progressive amounts of an oxide of vanadium having the general formula V.sub.2 O.sub.5 (vanadium pentoxide) are added while stirring the mixture. The amount of vanadium pentoxide in the mixture is sufficient to provide about 3 moles of vanadium for each mole of lithium present in the alkoxide. Then, the mixture is heated to an elevated temperature for a time sufficient to change the color of the oxide of vanadium and provide a solid precipitate. The solid precipitate is separated from the mixture and dried to obtain a powder of an oxide of vanadium having the nominal general formula LiV.sub.y O.sub.z, 0<y.ltoreq.3 and 0<z.ltoreq.8.