US 12,463,241 B2
Secondary battery
Il-Hong Kim, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/774,246
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Nov. 12, 2020, PCT No. PCT/KR2020/015928
§ 371(c)(1), (2) Date May 4, 2022,
PCT Pub. No. WO2021/096267, PCT Pub. Date May 20, 2021.
Claims priority of application No. 10-2019-0144585 (KR), filed on Nov. 12, 2019.
Prior Publication US 2022/0393229 A1, Dec. 8, 2022
Int. Cl. H01M 10/0525 (2010.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/587 (2010.01); H01M 10/44 (2006.01)
CPC H01M 10/0525 (2013.01) [H01M 4/364 (2013.01); H01M 4/386 (2013.01); H01M 4/587 (2013.01); H01M 10/44 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A secondary battery, comprising:
a positive electrode,
a negative electrode, and
a separator interposed between the negative electrode and the positive electrode,
wherein the negative electrode comprises: a negative electrode current collector; and a negative electrode active material layer on at least one surface of the negative electrode current collector,
wherein the negative electrode active material layer comprises a mixed active material comprising a carbonaceous active material and a Si-based active material, and
wherein the secondary battery is configured to be controlled by setting a lower limit of state-of-charge (SOC) during operation of the secondary battery depending on a weight mixing ratio of the Si-based active material to the carbonaceous active material and a capacity ratio of the Si-based active material to the carbonaceous active material.