-
Patent Agency Ranking
公开(公告)号：US20230307629A1
公开(公告)日：2023-09-28
申请号：US18018616
申请日：2021-08-06
Applicant: LG Chem, Ltd.
Inventor： Na Ri Kim , Young Su Park , Woo Hyun Kim , Sang Soon Choi , Hwa Seok Chae , Hyun Uk Kim , Dong Jin Kim , Dong Ryoung Kang
CPC classification number: H01M4/525 , H01M4/505 , H01M4/485 , H01M4/0471 , H01M2004/028
Abstract: A positive electrode active material precursor and method of preparing the same are disclosed herein. In some embodiments, a positive electrode active material precursor includes a particle having a first region, a second region, and a third region, a composition of the particle is represented by the following Formula 1 or Formula 2:
[M1aM2bM3cM4d](OH)2 [Formula 1]
[M1aM2bM3cM4d]O·OH [Formula 2]
M1, M2, and M3 are different from each other and independently selected from the group consisting of Ni, Co, and Mn, M4 is at least one selected from the group consisting of B, Mg, Ca, Al, Ti, V, Cr, Fe, Zn, Ga, Y, Zr, Nb, Mo, Ta, and W, and 0-
公开(公告)号：US20240243273A1
公开(公告)日：2024-07-18
申请号：US18288294
申请日：2022-05-11
Applicant: LG Chem, Ltd.
Inventor： Na Ri Kim , Sang Soon Choi , Dong Ryoung Kang , Woo Ram Lee , Hyun Ah Park , Byeong Guk Kwon , Jae Geun Kim
CPC classification number: H01M4/525 , C01G53/50 , H01M4/131 , H01M4/366 , H01M4/38 , H01M4/587 , H01M10/052 , C01P2002/50 , C01P2002/76 , C01P2004/84 , C01P2006/40 , H01M2004/028
Abstract: A positive electrode active material and method of preparing the same are disclosed herein. The positive electrode active material can have high capacity and high rate capability. In some embodiments, a positive electrode active material includes lithium transition metal oxide particles having a lithium transition metal oxide represented by Formula 1, wherein an interplanar spacing of (003) crystal planes ((003) d-spacing) of the lithium transition metal oxide of a surface of the particles is larger than a (003) d-spacing of the lithium transition metal oxide inside the particles:
wherein 0.8≤a≤1.2, 0.6≤x-
公开(公告)号：US20240170663A1
公开(公告)日：2024-05-23
申请号：US18284020
申请日：2022-05-10
Applicant: LG Chem, Ltd.
Inventor： Woo Ram Lee , Na Ri Kim , Dong Ryoung Kang , Sang Soon Choi , Hyun Ah Park , Woo Hyun Kim
CPC classification number: H01M4/525 , C01G53/50 , H01M4/366 , H01M4/505 , H01M4/8885 , H01M10/052 , C01P2004/61 , H01M2004/028
Abstract: Provided is a positive electrode active material capable of achieving a lithium secondary battery having excellent initial charge and discharge efficiency, life characteristics, and thermal stability and a preparation method thereof, wherein the positive electrode active material of the present invention includes a core portion including a lithium transition metal oxide wherein a mole ratio of nickel (Ni) in total transition metals is 80 mol % or more, and a layer-structured shell portion formed on the core portion and including a lithium transition metal oxide in which a molar ratio of manganese (Mn) in the total transition metals is 30 mol % or more, and satisfies Equation 1:
0.005
≤
Thickness
of
the
shell
portion
(
μm
)
Average
particle
diameter
(
D
50
)
of
the
positive
electrode
active
material
(
μm
)
≤
0.15
.
[
Equation
1
]-
公开(公告)号：US20230073433A1
公开(公告)日：2023-03-09
申请号：US17798958
申请日：2021-03-18
Applicant: LG Chem, Ltd.
Inventor： Woo Ram Lee , Jun Ho Eom , Na Ri Park , Dong Ryoung Kang , Jae Geun Kim
IPC: H01M4/36 , H01M4/485 , H01M4/505 , H01M4/525 , H01M10/052
Abstract: A positive electrode material, a positive electrode including the same, and a lithium secondary battery including the same are disclosed herein. In some embodiments, a positive electrode material includes a first positive electrode active material having a larger average particle diameter than a second positive electrode active material, wherein the first positive electrode active material and the second positive electrode active material are each independently a lithium transition metal oxide having a molar ratio of nickel of 80 mol % or more relative to the total molar amount of transition metals in the lithium transition metal oxide, and the positive electrode material satisfies Equation (1): 0
-
公开(公告)号：US20230322581A1
公开(公告)日：2023-10-12
申请号：US18005906
申请日：2021-08-18
Applicant: LG Chem, Ltd.
Inventor： Woo Ram Lee , Na Ri Kim , Dong Ryoung Kang , Sang Soon Choi
CPC classification number: C01G53/50 , C01G53/04 , C01G53/006
Abstract: A method of preparing a positive electrode active material includes forming a pre-sintered product by mixing a transition metal precursor having a nickel content of 70 atm % or more and a lithium raw material and performing primary sintering, and forming a lithium composite transition metal oxide by performing secondary sintering on the pre-sintered product, wherein the primary sintering is performed such that a ratio of a spinel phase of the pre-sintered product is in a range of 7% to 16%.
-
-
-
-
Search Results
5
records
(took 0.021 seconds)
