US 11,728,473 B2
Positive electrode for rechargeable lithium battery, method of preparing the same, and rechargeable lithium battery including the same
Kiyong Ahn, Yongin-si (KR); Taehee Kwak, Yongin-si (KR); Jeuk Ha, Yongin-si (KR); Seonyoung Kwon, Yongin-si (KR); Yumi Song, Yongin-si (KR); Eunok Oh, Yongin-si (KR); Soonrewl Lee, Yongin-si (KR); and Naoyuki Hase, Yongin-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Filed by Samsung SDI Co., Ltd., Yongin-si (KR)
Filed on Feb. 26, 2021, as Appl. No. 17/186,502.
Claims priority of application No. 10-2020-0124255 (KR), filed on Sep. 24, 2020.
Prior Publication US 2022/0093913 A1, Mar. 24, 2022
Int. Cl. H01M 4/36 (2006.01); C01G 53/00 (2006.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/364 (2013.01) [C01G 53/42 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); C01P 2002/52 (2013.01); C01P 2002/72 (2013.01); C01P 2002/74 (2013.01); C01P 2004/03 (2013.01); C01P 2004/50 (2013.01); C01P 2004/53 (2013.01); C01P 2004/61 (2013.01); C01P 2006/10 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A positive electrode for a rechargeable lithium battery, the positive electrode comprising:
a positive active material, comprising
small particle diameter monolith particles having a particle diameter of about 1 μm to about 8 μm and comprising a first nickel-based lithium metal oxide; and
large particle diameter secondary particles having a particle diameter of about 10 μm to about 20 μm and comprising a second nickel-based lithium metal oxide,
wherein the positive electrode has a mixture density of greater than or equal to about 3.45 g/cc, and
wherein an X-ray diffraction peak intensity ratio (I(003)/I(104)) of the positive electrode is greater than or equal to about 3.