US 9,812,692 B2
Lithium secondary battery having enhanced safety
In Sung Uhm, Daejeon (KR); Je Young Kim, Daejeon (KR); Kyoung Ho Kim, Daejeon (KR); Ji Yoon Kwon, Daejeon (KR); and Hoe Jin Hah, Daejeon (KR)
Assigned to LG Chem, Ltd., (KR)
Appl. No. 14/891,910
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Jul. 29, 2014, PCT No. PCT/KR2014/006922
§ 371(c)(1), (2) Date Nov. 17, 2015,
PCT Pub. No. WO2015/016568, PCT Pub. Date Feb. 5, 2015.
Claims priority of application No. 10-2013-0089937 (KR), filed on Jul. 30, 2013.
Prior Publication US 2016/0149194 A1, May 26, 2016
Int. Cl. H01M 2/02 (2006.01); H01M 2/30 (2006.01); H01M 4/58 (2010.01); H01M 10/0525 (2010.01); H01M 2/26 (2006.01); H01M 2/22 (2006.01); H01M 2/34 (2006.01); H01M 10/0585 (2010.01)
CPC H01M 2/30 (2013.01) [H01M 2/0237 (2013.01); H01M 2/22 (2013.01); H01M 2/26 (2013.01); H01M 2/348 (2013.01); H01M 4/582 (2013.01); H01M 4/5825 (2013.01); H01M 10/0525 (2013.01); H01M 10/0585 (2013.01); H01M 2200/103 (2013.01); H01M 2220/20 (2013.01); Y02T 10/7011 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A secondary battery, wherein an electrode assembly includes at least one positive electrode respectively having positive electrode tabs not coated with a positive electrode active material; at least one negative electrode respectively having negative electrode tabs not coated with a negative electrode active material; and at least one separator disposed between the positive electrode and the negative electrode and sealed with an electrolyte solution in a battery case, the positive electrode tabs and the negative electrode tabs are respectively connected to positive electrode lead and negative electrode lead protruded to the outside of a battery case, and at least one electrode terminal selected from the group consisting of the positive electrode tabs, and the negative electrode tabs comprises Wood's metal, and
wherein the Wood's metal is an alloy of Bi and Pb, or an alloy of Bi and Sn.