Patent ID: 11916224
Assignee: UMICORE KOREA LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC H

Claim 0:
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 %.