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. 17, 2019
Filed:
Aug. 14, 2014
Lg Chem, Ltd., Seoul, KR;
LG Chem, Ltd., , KR;
Abstract
Disclosed is a binder composition for secondary batteries, wherein conjugated diene latex particles (A) having an average particle diameter of 50 nm or more and 200 nm or less and acrylic copolymer latex particles (B) having an average particle diameter of 300 nm or more and 700 nm or less are present as an independent phases, and the acrylic copolymer latex particles (B) are included in an amount of 1% to 30% by weight based on a mass of a solid. When the binder composition according to the present invention is applied to an electrode mixture and lithium secondary battery, superior binding force may be maintained between electrode materials and between an electrode material and a current collector, which suffer volume change during charge/discharge, and a secondary battery having superior initial capacity and efficiency may be provided. In addition, thickness increase and gas generation are decreased at high temperature and thus swelling is decreased, whereby a battery having enhanced safety may be provided.