US 11,888,130 B2
Secondary battery and active material
Sung Kyun Chang, Daegu (KR); Sang Hoon Jeon, Daegu (KR); Jun Ho Shin, Daegu (KR); Ji Woo Oh, Daegu (KR); Hee Won Jung, Daegu (KR); Hye-Rim Bae, Daegu (KR); Chang Hyun Lee, Daegu (KR); and Doe Hyoung Kim, Daegu (KR)
Assigned to L&F CO., LTD., Daegu (KR)
Filed by L&F Co., Ltd., Daegu (KR)
Filed on Oct. 22, 2019, as Appl. No. 16/660,507.
Claims priority of application No. 10-2018-0126490 (KR), filed on Oct. 23, 2018.
Prior Publication US 2020/0144682 A1, May 7, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/613 (2014.01); H01M 4/36 (2006.01); H01M 4/131 (2010.01)
CPC H01M 10/613 (2015.04) [H01M 4/131 (2013.01); H01M 4/364 (2013.01); H01M 2200/10 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A secondary battery comprising:
a positive electrode;
a negative electrode; and
an electrolyte,
wherein the positive electrode comprises a positive active material of a lithium metal oxide including a reaction-inducing substance in which the lithium metal oxide is in the form of secondary particles of agglomerated primary particles,
wherein the reaction-inducing substance is located between the agglomerated primary particles constituting secondary particles,
wherein the reaction-inducing substance forms a reaction product by consuming thermal energy when exposed to a predetermined temperature or higher in a use environment of the secondary battery, thereby improving thermal safety of the secondary battery, and
wherein the reaction-inducing substance comprises Li and Si.