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. 24, 2015
Filed:
Jul. 14, 2011
Chang-bum Ahn, Yongin-si, KR;
Chang-Bum Ahn, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, Gyeonggi-do, KR;
Abstract
Example embodiments relate to a secondary battery which is capable of trapping elution of copper or nickel into ions, the copper and nickel being used as a negative current collector when charging and discharging the battery. The secondary battery according to the example embodiments includes an electrode assembly comprising a positive plate with a positive tab drawn out, a negative plate with a negative tab drawn out, and a separator disposed therebetween; a case to accommodate the electrode assembly and an electrolyte and to be formed with a sealing part; a positive lead tab and a negative lead tab of which one portions are connected to the positive tab and the negative tab, respectively, and another one portions are exposed to the outside of the case; and insulating films attached to one area of the positive lead tab and one area of the negative lead tab, respectively, the areas being in contact with the sealing part of the case, wherein the insulating film attached to the negative lead tab includes a predetermined amount of a nitrile compound.