	US 11,670,754 B2
	Positive active material for rechargeable lithium battery, preparing method thereof and rechargeable lithium battery comprising positive electrode including positive active material
Pilsang Yun, Yongin-si (KR); Jongmin Kim, Yongin-si (KR); Hyunbeom Kim, Yongin-si (KR); Sangin Park, Yongin-si (KR); and Yongchan You, Yongin-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed on Nov. 23, 2020, as Appl. No. 17/102,332.
Application 17/102,332 is a continuation in part of application No. 16/209,659, filed on Dec. 4, 2018, granted, now 10,847,781.
Claims priority of application No. 10-2017-0165431 (KR), filed on Dec. 4, 2017; and application No. 10-2018-0153649 (KR), filed on Dec. 3, 2018.
Prior Publication US 2021/0074998 A1, Mar. 11, 2021
Int. Cl. H01M 4/131 (2010.01); C01G 53/00 (2006.01); H01M 10/0525 (2010.01); H01M 4/04 (2006.01); H01M 4/1391 (2010.01); H01M 4/36 (2006.01); H01M 4/525 (2010.01); H01M 4/505 (2010.01); H01M 4/02 (2006.01)

CPC H01M 4/131 (2013.01) [C01G 53/006 (2013.01); H01M 4/0471 (2013.01); H01M 4/1391 (2013.01); H01M 4/364 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); C01P 2004/50 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2006/12 (2013.01); H01M 2004/028 (2013.01)]

20 Claims

1. A positive active material for a rechargeable lithium battery, comprising:

a first positive active material comprising a secondary particle comprising at least two agglomerated primary particles, where at least one part of the primary particles has a radial arrangement structure;

a second positive active material having a monolith structure,

wherein the first positive active material and the second positive active material each comprise a nickel-based positive active material;

a boron-containing compound coated on only a surface of the second positive active material,

wherein an amount of boron based on a total amount of the second positive active material is 0.3 mol % or less.