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:
Jun. 15, 1999
Filed:
Mar. 17, 1998
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
It is an object of the present invention to provide a manufacturing method for Li composite oxides employed as electrode materials for Li ion batteries which is capable of obtaining Li composite oxides having a stable composition using heat treatment at comparatively low temperatures. An Li source compound and an M source compound (where M is one or more elements selected from a group containing Mn, Ni, Co, Fe, V, Ti, Sc, Y, and Al) having an element M in a composite with Li are mixed at predetermined proportions. A chemical reaction is caused by pulverizing and mixing this raw material mixture in an inert gas atmosphere. The pulverization, mixing, and reaction are continued until the raw material can no longer be detected. After pulverization and mixing, the raw material mixture is subjected to heat treatment by heating it to a temperature within a predetermined range.