US 12,132,207 B2
Positive electrode slurry composition for secondary battery, positive electrode prepared by using the same, and secondary battery including the positive electrode
Joo Yeon Ha, Daejeon (KR); Houng Sik Yoo, Daejeon (KR); Dong Hyun Kim, Daejeon (KR); and Hyeon Choi, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 18/025,058
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Mar. 17, 2022, PCT No. PCT/KR2022/003766
§ 371(c)(1), (2) Date Mar. 7, 2023,
PCT Pub. No. WO2022/197125, PCT Pub. Date Sep. 22, 2022.
Claims priority of application No. 10-2021-0036166 (KR), filed on Mar. 19, 2021.
Prior Publication US 2023/0335740 A1, Oct. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01B 1/24 (2006.01); C09D 5/24 (2006.01); C09D 7/45 (2018.01); C09D 7/61 (2018.01); C09D 7/65 (2018.01); C09D 127/16 (2006.01); H01M 4/58 (2010.01); H01M 4/60 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/623 (2013.01) [C09D 5/24 (2013.01); C09D 7/45 (2018.01); C09D 7/61 (2018.01); C09D 7/65 (2018.01); C09D 127/16 (2013.01); H01M 4/5825 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); H01M 2004/028 (2013.01)] 11 Claims
 
1. A positive electrode slurry composition for a secondary battery, the positive electrode slurry composition comprising:
a lithium iron phosphate-based positive electrode active material;
a binder;
a conductive agent;
a dispersant; and
a solvent,
wherein the dispersant comprises a nitrile-based copolymer, as a first dispersant, and a polymer dispersant containing an oxyalkylene unit where the oxyalkylene unit is present in an amount of 60 wt % or more, based on the total weight of the polymer dispersant, as a second dispersant.