US 11,916,224 B2
Positive electrode material for rechargeable lithium ion batteries
Dae-Hyun Kim, Cheonan-si (KR); Jens Paulsen, Cheonan-si (KR); Shinichi Kumakura, Cheonan-si (KR); YuRi Lee, Cheonan-si (KR); Liang Zhu, Cheonan-si (KR); and TaeHyeon Yang, Cheonan-si (KR)
Assigned to Umicore, Brussels (BE); and Umicore Korea Ltd., Cheonan-si (KR)
Appl. No. 16/976,879
Filed by UMICORE, Brussels (BE); and UMICORE KOREA LTD., Cheonan-si (KR)
PCT Filed Feb. 25, 2019, PCT No. PCT/EP2019/054511
§ 371(c)(1), (2) Date Aug. 31, 2020,
PCT Pub. No. WO2019/166350, PCT Pub. Date Sep. 6, 2019.
Claims priority of provisional application 62/637,752, filed on Mar. 2, 2018.
Claims priority of application No. 18175897 (EP), filed on Jun. 5, 2018.
Prior Publication US 2020/0411859 A1, Dec. 31, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/525 (2010.01); H01M 4/131 (2010.01); H01M 4/134 (2010.01); H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/364 (2013.01) [H01M 4/131 (2013.01); H01M 4/134 (2013.01); H01M 4/366 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/028 (2013.01)] 11 Claims
 
1. A bimodal lithium transition metal oxide based powder mixture for a rechargeable battery, comprising:
a first lithium transition metal oxide based powder, comprising particles of a material A having a layered crystal structure comprising the elements Li, a transition metal based composition M and oxygen, the first powder having a particle size distribution characterized by a (D90−D10)/D50<1.0; and
a second lithium transition metal oxide based powder, comprising a material B having single crystal particles, said particles having a general formula Li1+bN′1-bO2, wherein −0.03≤b≤0.10, and N′=NixM″yCozEd, wherein 0.30≤x≤0.92, 0.05≤y≤0.40, 0.05≤z≤0.40 and 0≤d≤0.10, with M″ being one or both of Mn or Al, and with E being a dopant different from M″,
the first powder having an average particle size D50 between 10 and 40 μm, the second powder having an average particle size D50 between 2 and 4 μm; and wherein the weight ratio of the second powder in the bimodal mixture is between 15 and 60 wt %.