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. 25, 2001
Filed:
May. 19, 1998
You-Mee Kim, Chonan, KR;
Samsung SDI, Co., Ltd., Suwon, KR;
Abstract
The present invention provides an electrode binder of a lithium-ion secondary battery. The binder includes at least two materials selected from a polyvinylidene fluoride polymer. The materials have the same chemical component as each other but different physical characteristic from each other. The materials are a homopolymer and a copolymer of the polyvinylidene fluoride polymer. The binder also includes at least two materials selected from a rubber polymer binder and a polyvinylidene fluoride polymer. The materials have the different chemical component as each other. A mixture ratio of the homopolymer and the copolymer are selected within a range of 50:50 to 95:5 wt %. It is preferable that the polyvinylidene fluoride and rubber polymer binder are mixed within a rate of 20:80 to 80:20 wt %.