公开(公告)号：US20230054397A1

公开(公告)日：2023-02-23

申请号：US17747460

申请日：2022-05-18

Applicant: Umicore ,  Umicore Korea Ltd.

Inventor： Areum PARK ,  JiHye KIM ,  Song-Yi HAN ,  Jens Martin PAULSEN ,  Kyung-Tae LEE ,  Randy De Palma

IPC: H01M4/505 ,  H01M4/525 ,  H01M4/36 ,  H01M4/58 ,  H01M10/0525 ,  H01M4/38

Abstract: A crystalline precursor compound for manufacturing a lithium transition metal based oxide powder usable as an active positive electrode material in lithium-ion batteries, the precursor having a general formula Li1-a((Niz(Ni0.5Mn0.5)yCox)1-kAk)1+aO2, wherein A comprises at least one element of the group consisting of: Mg, Al, Ca, Si, B, W, Zr, Ti, Nb, Ba, and Sr, with 0.05≤x≤0.40, 0.25≤z≤0.85, x+y+z=1, 0≤k≤0.10, and 0≤a≤0.053, wherein said crystalline precursor powder has a crystalline size L, expressed in nm, with 15≤L≤36.

公开(公告)号：US20200020944A1

公开(公告)日：2020-01-16

申请号：US16562694

申请日：2019-09-06

Applicant: Umicore ,  Umicore Korea Ltd.

Inventor： Areum PARK ,  JiHye KIM ,  Song-Yi HAN ,  Jens Martin PAULSEN ,  Kyung-Tae LEE ,  Randy De Palma

IPC: H01M4/505 ,  H01M4/525 ,  H01M4/36 ,  H01M4/38 ,  H01M4/58 ,  H01M10/0525

Abstract: A crystalline precursor compound for manufacturing a lithium transition metal based oxide powder usable as an active positive electrode material in lithium-ion batteries, the precursor having a general formula Li1−a((Niz(Ni0.5Mn0.5)yCox)1−kAk)1+aO2, wherein A comprises at least one element of the group consisting of: Mg, Al, Ca, Si, B, W, Zr, Ti, Nb, Ba, and Sr, with 0.05≤x≤0.40, 0.25≤z≤0.85, x+y+z=1, 0≤k≤0.10, and 0≤a≤0.053, wherein said crystalline precursor powder has a crystalline size L, expressed in nm, with 15≤L≤36.

公开(公告)号：US20200006762A1

公开(公告)日：2020-01-02

申请号：US16487525

申请日：2018-02-14

Applicant: Umicore ,  Umicore Korea Ltd.

Inventor： Areum PARK ,  JiHye KIM ,  Song-Yi HAN ,  Jens Martin PAULSEN ,  Kyung-Tae LEE ,  Randy De Palma

IPC: H01M4/505 ,  C01G53/00 ,  H01M10/0525 ,  H01M4/525

Abstract: A crystalline precursor compound for manufacturing a lithium transition metal based oxide powder usable as an active positive electrode material in lithium-ion batteries, the precursor having a general formula Li1−a((Niz(Ni1/2 Mn1/2)yCox)1−k Ak)1+aO2, wherein x+y+z=1, 0.1≤x≤0.4, 0.25≤z≤0.52, A is a dopant, 0≤k≤0.1, and 0.03≤a≤0.35, wherein the precursor has a crystalline size L expressed in nm, with 15≤L≤36. Also a method is described for manufacturing a positive electrode material having a general formula Li1+a′M′1−a−O2, with M′=(Niz(Ni1/2 Mn1/2)yCOx)1−k Ak, wherein x+y+z=1. 0.1≤x≤0.4, 0.25≤z≤0.52, A is a dopant, 0≤k≤0.1, and 0.01≤a′≤0.10, by sintering the lithium deficient precursor powder mixed with either one of LiOH, LiOH.H2O, in an oxidizing atmosphere at a temperature between 800 and 1000° C., for a time between 6 and 36 hrs.