公开(公告)号：US20210292186A1

公开(公告)日：2021-09-23

申请号：US17259106

申请日：2019-07-10

Applicant: BYD COMPANY LIMITED

Inventor： Dongjie HU ,  Hao WEI

IPC: C01G53/00 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/38 ,  H01M4/36

Abstract: A cathode material, a preparation method thereof, a lithium ion battery and a vehicle are provided. The cathode material comprises elemental sulfur and secondary particles formed by packing primary particles, wherein the secondary particles have a hollow structure, and the elemental sulfur fills in gaps among the primary particles and in the hollow structure. The primary particles comprise a lithium oxide, wherein the lithium oxide comprises δLiNimConX(1-m-n)O2·(1−δ)Li2MO3, 0≤δ≤1, X comprises at least one selected from Mn, Al, Nb, and Fe, M comprises at least one of Mn, Al, Nb, Fe, Co, and Ni, 0≤m

公开(公告)号：US20210292185A1

公开(公告)日：2021-09-23

申请号：US17259100

申请日：2019-07-10

Applicant: BYD COMPANY LIMITED

Inventor： Dongjie HU ,  Hao WEI

IPC: C01G53/00 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/38

Abstract: A cathode material, a preparation method thereof, a lithium ion battery and a vehicle are provided. The cathode material comprises cathode material particles comprising a central area, and a surface layer area, wherein the central area comprises lithium oxide, and the surface layer area comprises lithium oxide and elemental sulfur, in which the lithium oxide comprises δLiNimConX(1-m-n)O2·(1−δ)Li2MO3, where 0≤δ≤1, X comprises at least one selected from Mn, Al, Nb, and Fe, M comprises at least one selected from Mn, Al, Nb, Fe, Co, and Ni, 0≤m

公开(公告)号：US20210367233A1

公开(公告)日：2021-11-25

申请号：US17272177

申请日：2019-08-28

Applicant: BYD COMPANY LIMITED

Inventor： Yongqing GAN ,  Shicai LI ,  Dongjie HU ,  Xiao SHI ,  Wei SONG

IPC: H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/62

Abstract: A ternary cathode material, a preparation method thereof, and a lithium ion battery are provided. The ternary cathode material comprises a micron-sized single-crystalline particle structure of LiNi1-x-y-zCoxMnyMzO2, wherein 0.6 a2/(a2+x2+y2+z2); and M comprises at least one selected from Al, Mg, Ti, Ga, Nb, Zr, W, Mo and Ta.

公开(公告)号：US20210328212A1

公开(公告)日：2021-10-21

申请号：US17259098

申请日：2019-07-10

Applicant: BYD COMPANY LIMITED

Inventor： Dongjie HU ,  Hao WEI

IPC: H01M4/36 ,  H01M4/525 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/131 ,  H01M4/136

Abstract: A cathode material, a preparation method thereof, and a lithium ion battery are provided. The cathode material comprises cathode material particles comprising a central area, an intermediate layer, and a surface layer, wherein the intermediate layer is located between the central area and the surface layer; and the central area comprises a lithium oxide, the intermediate layer comprises elemental sulfur, and the surface layer comprises elemental sulfur and elemental carbon, in which the lithium oxide comprises δLiNimConX(1-m-n)O2.(1-δ)Li2MO3, where 0≤δ≤1, X includes at least one selected from Mn, Al, Nb, and Fe, M includes at least one selected from Mn, Al, Nb, Fe, Co, and Ni, 0≤m