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:
Feb. 15, 2011
Filed:
Mar. 03, 2006
Feng Xiao, Shenzhen, CN;
Jianchang Zhang, Shenzhen, CN;
Wenyu Cao, Shenzhen, CN;
Dengwei Liu, Shenzhen, CN;
Feng Xiao, Shenzhen, CN;
Jianchang Zhang, Shenzhen, CN;
Wenyu Cao, Shenzhen, CN;
Dengwei Liu, Shenzhen, CN;
BYD Company Limited, Shenzhen, CN;
Abstract
A process for preparing lithium-nickel-manganese-cobalt composite oxide used as a positive electrode material for the lithium ion battery, comprising subjecting a mixture containing a lithium compound and nickel-manganese-cobalt hydroxide to a first-stage sintering and a second-stage sintering. The process includes adding a binder and/or binder solution after the first-stage sintering, and the mixture of the binder and/or binder solution and the product of first-stage sintering is sintered in the second-stage sintering. The tap density and volume specific capacity of the positive electrode material lithium-nickel-manganese-cobalt composite oxide prepared by the process, come up to 2.4 g/cmand 416.4 mAh/cm, respectively. Besides, the positive electrode material lithium-nickel-manganese-cobalt composite oxide prepared by the process possesses the advantages of high specific capacity and good cycle stability.