US 11,811,061 B2
Positive electrode materials having a superior hardness strength
Maxime Blangero, Cheonan (KR); Da-In Choi, Cheonan (KR); WooRam Cho, Gyeonggi-do (KR); and JiHye Kim, Dujeong-dong (KR)
Assigned to UMICORE, Brussels (BE); and UMICORE KOREA, LTD., Chungnam (KR)
Filed by Umicore, Brussels (BE); and Umicore Korea Ltd., Chungnam (KR)
Filed on Apr. 12, 2022, as Appl. No. 17/718,515.
Application 17/718,515 is a continuation of application No. 17/019,626, filed on Sep. 14, 2020, granted, now 11,335,907.
Application 17/019,626 is a continuation of application No. 15/317,161, granted, now 10,833,328, issued on Nov. 10, 2020, previously published as PCT/IB2015/054146, filed on Jun. 1, 2015.
Claims priority of application No. 14171694 (EP), filed on Jun. 10, 2014.
Prior Publication US 2022/0255075 A1, Aug. 11, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/525 (2010.01); H01M 4/505 (2010.01); C01G 53/00 (2006.01); H01M 10/0525 (2010.01); H01M 4/1391 (2010.01); H01M 10/052 (2010.01); H01M 4/131 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/525 (2013.01) [C01G 53/42 (2013.01); C01G 53/50 (2013.01); H01M 4/505 (2013.01); H01M 10/0525 (2013.01); C01P 2002/72 (2013.01); C01P 2004/03 (2013.01); C01P 2004/51 (2013.01); C01P 2004/61 (2013.01); C01P 2006/10 (2013.01); C01P 2006/12 (2013.01); C01P 2006/16 (2013.01); C01P 2006/40 (2013.01); H01M 4/131 (2013.01); H01M 4/1391 (2013.01); H01M 10/052 (2013.01); H01M 2004/028 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A powderous positive electrode material for a lithium secondary battery, the powderous positive electrode material having the general formula Li1+x[Ni1−a−b−cMaM′bM″c]1−xO2−z;
M being either one or more elements selected from the group consisting of Mn, Zr and Ti,
M′ being either one or more elements selected from the group consisting of Al, B and Co,
M″ being a dopant different from M and M′,
x, a, b and c being expressed in mol with −0.02≤x≤0.02, 0≤c≤0.05, 0.10≤(a+b)≤0.65 and 0≤z≤0.05; and wherein the powderous positive electrode material is characterized by having a BET value ≤0.37 m2/g, a Dmax<50 μm, and a hardness strength index Δ Γ(P) of no more than 100%+(1−2a−b)×160% for P=200 MPa, wherein

OG Complex Work Unit Math
with D10P=0 being the D10 value of an unconstrained powder (P=0 MPa), Γ0(D10P=0) being a cumulative volume particle size distribution of the unconstrained powder at D10P=0, and ΓP(D10P=0) being the cumulative volume particle size distribution at D10P=0 of pressed samples with P being expressed in MPa.