US 12,249,714 B2
Positive electrode additive, manufacturing method thereof, and positive electrode and lithium rechargeable battery including the same
Boram Lee, Daejeon (KR); Sin Young Park, Daejeon (KR); Tae Gu Yoo, Daejeon (KR); Taegon Kim, Daejeon (KR); Min Kwak, Daejeon (KR); and Wang Mo Jung, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/274,860
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Mar. 3, 2020, PCT No. PCT/KR2020/003012
§ 371(c)(1), (2) Date Mar. 10, 2021,
PCT Pub. No. WO2020/242021, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 10-2019-0062076 (KR), filed on May 27, 2019.
Prior Publication US 2022/0020988 A1, Jan. 20, 2022
Int. Cl. H01M 4/58 (2010.01); C01B 25/445 (2006.01); C01B 25/45 (2006.01); C01G 53/00 (2006.01); C01G 53/50 (2025.01); H01M 4/02 (2006.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 10/0567 (2010.01)
CPC H01M 4/5825 (2013.01) [C01B 25/445 (2013.01); C01B 25/45 (2013.01); C01G 53/50 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 10/0567 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01); H01M 2220/20 (2013.01)] 14 Claims
 
1. A positive electrode additive for a lithium rechargeable battery comprising:
a compound represented by the following Chemical Formula 1;
a compound represented by the following Chemical Formula 2; and
lithium phosphate (Li3PO4)
Li2+aNibM1−bO2+c  [Chemical Formula 1]
wherein, M is a metal element forming a divalent cation, −0.2≤a≤0.2, 0.5≤b≤1.0, and −0.2≤c≤0.2,
Ni2−eM1−eP4O12  [Chemical Formula 2]
wherein, 0.5<e<1.0, and M is the same as defined in Chemical Formula 1,
wherein the compound represented by Chemical Formula 1 is included in an amount of 80 to 90% by weight, and the Li3PO4 is included in an amount of 2 to 5% by weight, each based on the total amount (100% by weight) of the positive electrode additive.