US 12,341,193 B2
Lithium complex oxide
Jung Han Lee, Cheongju-si (KR); Seung Woo Choi, Cheongju-si (KR); Moon Ho Choi, Cheongju-si (KR); Jun Won Suh, Cheongju-si (KR); Jin Kyeong Yun, Cheongju-si (KR); Mi Hye Yun, Cheongju-si (KR); Kwang Seok Choi, Cheongju-si (KR); Joong Ho Bae, Cheongju-si (KR); and Jin Oh Son, Cheongju-si (KR)
Assigned to ECOPRO BM CO., LTD., Cheongju-si (KR)
Filed by ECOPRO BM CO., LTD., Cheongju-si (KR)
Filed on Apr. 10, 2024, as Appl. No. 18/632,065.
Application 18/632,065 is a continuation of application No. 18/173,336, filed on Feb. 23, 2023, granted, now 11,996,559.
Application 18/173,336 is a continuation of application No. 17/085,519, filed on Oct. 30, 2020, granted, now 11,621,418, issued on Apr. 4, 2023.
Claims priority of application No. 10-2019-0137539 (KR), filed on Oct. 31, 2019.
Prior Publication US 2024/0266532 A1, Aug. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01B 1/08 (2006.01); C01G 53/50 (2025.01); H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/525 (2013.01) [C01G 53/50 (2013.01); H01B 1/08 (2013.01); H01M 4/364 (2013.01); H01M 4/505 (2013.01); H01M 10/0525 (2013.01); C01P 2002/52 (2013.01); C01P 2002/72 (2013.01); C01P 2002/76 (2013.01); C01P 2004/03 (2013.01); C01P 2004/50 (2013.01); C01P 2004/53 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A lithium complex oxide comprising a mixture of first particles and second particles, the lithium complex oxide represented by the following Chemical Formula 1 and having a full width at half maximum (FWHM) (deg., 20) of a 104 peak in an XRD peak, defined by a hexagonal lattice having an R-3m space group, in a range of the following Relational Formula 1:
LiaNixCoyMnzM1-x-y-zO2,  [Chemical Formula 1]
wherein in Chemical Formula 1, M is at least one selected from the group consisting of: B, Ba, Ce, Cr, F, Mg, Al, Cr, V, Ti, Fe, Zr, Zn, Si, Y, Nb, Ga, Sn, Mo, W, P, Sr, and any combination thereof, 0.9≤a≤1.3, 0.6≤x≤1.0, 0.0≤y≤=0.4, 0.0≤z≤0.4, and 0.0≤1−x−y−z≤0.4,
−0.025≤FWHM(104)−{0.04+(xfirst particle−0.6)×0.25}≤0.025,  [Relational Formula 1]
wherein FWHM(104) in Relational Formula 1 is represented by the following Relational Formula 2,
FWHM(104)={(FWHMChemical Formula 1 powder(104)−0.1×mass ratio of second particles)/mass ratio of first particles}−FWHMSi powder (220),  [Relational Formula 2]
wherein in Relational Formula 2, FWHMChemical Formula 1 powder (104) is a FWHM of a 104 peak observed near 44.5° (2θ) in an XRD measurement value of the lithium complex oxide,
FWHMSi powder (220) is a FWHM of a 220 peak observed near 47.3° (2θ) in an XRD measurement value of a Si powder that is Sigma-Aldrich No. 215619 Si powder,
xfirst particle=(x−xsecond particle*mass ratio of second particles)/mass ratio of first particles, xsecond particle meaning a Ni molar rate of the second particles, and x is as defined above in Chemical Formula 1, and
the mass ratios mean a mass rate with respect to the total mass of the first particles and the second particles, and
wherein xfirst particle and xsecond particle are different from each other.