公开(公告)号：US20230378433A1

公开(公告)日：2023-11-23

申请号：US18031473

申请日：2022-06-02

Applicant: LG Energy Solution, Ltd.

Inventor： Chi Ho Jo ,  Wang Mo Jung ,  Hye Hyeon Kim ,  Tae Gu Yoo ,  Jin Tae Hwang ,  Hae Jung Jung ,  Jong Wook Heo

IPC: H01M4/131 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/38 ,  H01M4/134

CPC classification number: H01M4/131 ,  H01M10/0525 ,  H01M4/625 ,  H01M4/386 ,  H01M4/134 ,  H01M2004/028

Abstract: The present technology provides a positive electrode for a lithium secondary battery and a lithium secondary battery including the same. In the positive electrode, a positive electrode additive represented by Formula 1 is contained in a positive electrode mixture layer, and specific X-ray diffraction (XRD) and/or extended X-ray absorption fine-structure (EXAFS) peak(s) are controlled for cobalt remaining in the positive electrode mixture layer after initial charging to SOC 100% to have a specific oxidation number, thereby reducing side reactions caused by the irreversible additive, that is, the positive electrode additive, and reducing the amount of gas such as oxygen generated during charging/discharging. Therefore, the lithium secondary battery has an excellent effect of improving battery safety and electrical performance.

公开(公告)号：US20230275209A1

公开(公告)日：2023-08-31

申请号：US18195089

申请日：2023-05-09

Applicant: LG Energy Solution, Ltd.

Inventor： Tae Gu Yoo ,  Young Uk Park ,  Jin Tae Hwang ,  Wang Mo Jung ,  Sung Bin Park

IPC: H01M4/131 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M4/131 ,  H01M4/0471 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/366 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive electrode active material includes a lithium transition metal oxide, which is doped with doping element M2, wherein M2 includes at least one of Al, Ti, Mg, Zr, W, Y, Sr, Co, F, Si, Na, Cu, Fe, Ca, S, or B, and contains nickel in an amount of 60 mol % or more based on a total number of moles of transition metals excluding lithium, wherein the lithium transition metal oxide has a single particle form, and includes a center portion having a layered structure and a surface portion having a rock-salt structure, and the doping element M2 is included in an amount of 3,580 ppm to 7,620 ppm based on a total weight of the positive electrode active material.

公开(公告)号：US20230223526A1

公开(公告)日：2023-07-13

申请号：US18151079

申请日：2023-01-06

Applicant: LG Energy Solution Ltd.

Inventor： Jong Wook Heo ,  Wang Mo Jung ,  Chi Ho JO ,  Jin Tae Hwang ,  Hae Jung Jung ,  Byung Joon Chae ,  Tae Gu Yoo ,  Suk Bae Yoon ,  Hyeon Jin Cho

IPC: H01M4/485 ,  H01M4/525 ,  H01M4/505 ,  H01M4/04 ,  H01M10/0525

CPC classification number: H01M4/485 ,  H01M4/525 ,  H01M4/505 ,  H01M4/0404 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive electrode material powder including a lithium nickel-based oxide represented by Chemical Formula 1 (LiaNibCocM1dM2eO2) and having a degree of single-particle formation, represented by the following Equation (1), of 0.3 to 0.8:







∑

i
=
1

n




4
⁢
π

3

⁢

R
i
3



n

×


1

D
50


.





In Equation (1), Ri is a radius of the ith grain as measured by subjecting an electrode manufactured using the positive electrode material powder to ion milling and then analyzing the cross section of the electrode by electron backscatter diffraction (EBSD), n is the total number of grains as measured by the EBSD analysis and ranges from 350 to 450, and D50 is a volume-cumulative average particle diameter of the positive electrode material powder as measured using a laser diffraction particle size analyzer.

公开(公告)号：US20230083736A1

公开(公告)日：2023-03-16

申请号：US17941284

申请日：2022-09-09

Applicant: LG Energy Solution, Ltd.

Inventor： Jin Tae Hwang ,  Wang Mo Jung ,  Chi Ho Jo ,  Tae Gu Yoo ,  Hae Jung Jung ,  Jong Wook Heo ,  Hyeon Jin Cho

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/505 ,  H01M10/052

Abstract: A positive electrode active material and a method for producing the same are disclosed herein. In some embodiments, a positive electrode active material includes a lithium-nickel-based oxide in the form of at least one of single particles or a pseudo-single particles, wherein each single particle consists of one nodule, wherein each pseudo-primary particles is a composite of 30 or fewer nodules, wherein on the surface of the lithium-nickel-based oxide, a number of nickel ions having an oxidation number of +3 or higher is greater than a number of nickel ions having an oxidation number less than +3.

公开(公告)号：US20250062314A1

公开(公告)日：2025-02-20

申请号：US18936380

申请日：2024-11-04

Applicant: LG Energy Solution, Ltd.

Inventor： Tae Gu Yoo ,  Young Uk Park ,  Jin Tae Hwang ,  Wang Mo Jung ,  Sung Bin Park

IPC: H01M4/131 ,  H01M4/02 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/525 ,  H01M10/0525

Abstract: A positive electrode active material includes a lithium transition metal oxide and a coating element M3-containing coating layer formed on a surface of the lithium transition metal oxide, wherein M3 comprises at least one of Al, Ti, Mg, Zr, W, Y, Sr, or Co, wherein the lithium transition metal oxide is doped with a doping element M2, wherein M2 includes at least one of Al, Ti, Mg, Zr, W, Y, Sr, Co, F, Si, Na, Cu, Fe, Ca, S, or B, wherein the lithium transition metal oxide has a single particle form, and includes a center portion having a layered structure and a surface portion having a rock-salt structure, and the total amount of the doping element M2 and the coating element M3 is in a range of 4,580 ppm to 9,120 ppm based on a total weight of the positive electrode active material.

公开(公告)号：US12191488B2

公开(公告)日：2025-01-07

申请号：US18540301

申请日：2023-12-14

Applicant: LG Energy Solution, Ltd.

Inventor： Eun Sol Lho ,  Jin Tae Hwang ,  Su Yeon Oh ,  Byung Chun Park ,  Sang Min Park ,  Sang Wook Lee ,  Seul Ki Kim ,  Hyeong Ii Kim

IPC: H01M4/525 ,  H01M4/36 ,  H01M4/485 ,  H01M10/052 ,  H01M4/02

Abstract: A positive electrode active material includes a nickel-based lithium composite metal oxide having a Ni content of 80 atm % or greater among transition metals except lithium, and in the form of a single particle or pseudo-single particle. The nickel-based lithium composite metal oxide has a coating layer positioned on the surface thereof, wherein the coating layer contains cobalt. The positive electrode active material also satisfies [Equation 1] 1≤XY/Z≤3, wherein X is the molar number (mol %) of Co in the coating layer based on 100 moles of the nickel-based lithium composite metal oxide, Y is the average particle diameter (μm) of nodules of the nickel-based lithium composite metal oxide, and Z is D50 (μm) of the positive electrode active material, wherein Z is from 5 μm to 12 μm.

公开(公告)号：US20240213471A1

公开(公告)日：2024-06-27

申请号：US18540301

申请日：2023-12-14

Applicant: LG Energy Solution, Ltd.

Inventor： Eun Sol Lho ,  Jin Tae Hwang ,  Su Yeon Oh ,  Byung Chun Park ,  Sang Min Park ,  Sang Wook Lee ,  Seul Ki Kim ,  Hyeong II Kim

IPC: H01M4/525 ,  H01M4/36 ,  H01M4/485 ,  H01M10/052

CPC classification number: H01M4/525 ,  H01M4/366 ,  H01M4/485 ,  H01M10/052 ,  H01M2004/028

Abstract: A positive electrode active material includes a nickel-based lithium composite metal oxide having a Ni content of 80 atm % or greater among transition metals except lithium, and in the form of a single particle or pseudo-single particle. The nickel-based lithium composite metal oxide has a coating layer positioned on the surface thereof, wherein the coating layer contains cobalt. The positive electrode active material also satisfies [Equation 1] 1≤XY/Z≤3, wherein X is the molar number (mol %) of Co in the coating layer based on 100 moles of the nickel-based lithium composite metal oxide, Y is the average particle diameter (μm) of nodules of the nickel-based lithium composite metal oxide, and Z is D50 (μm) of the positive electrode active material, wherein Z is from 5 μm to 12 μm.

公开(公告)号：US20240194852A1

公开(公告)日：2024-06-13

申请号：US18411502

申请日：2024-01-12

Applicant: LG Energy Solution, Ltd.

Inventor： Tae Gu Yoo ,  Yong Uk Park ,  Jin Tae Hwang ,  Wang Mo Jung ,  Sung Bin Park

IPC: H01M4/131 ,  H01M4/02 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M4/131 ,  H01M4/0471 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/366 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive electrode active material includes a lithium transition metal oxide and a coating element M3-containing coating layer formed on a surface of the lithium transition metal oxide, wherein M3 comprises at least one of Al, Ti, Mg, Zr, W, Y, Sr, or Co, wherein the lithium transition metal oxide is doped with a doping element M2, wherein M2 includes at least one of Al, Ti, Mg, Zr, W, Y, Sr, Co, F, Si, Na, Cu, Fe, Ca, S, or B, wherein the lithium transition metal oxide has a single particle form, and includes a center portion having a layered structure and a surface portion having a rock-salt structure, and the total amount of the doping element M2 and the coating element M3 is in a range of 4,580 ppm to 9,120 ppm based on a total weight of the positive electrode active material.

公开(公告)号：US20230246180A1

公开(公告)日：2023-08-03

申请号：US18004263

申请日：2022-06-02

Applicant: LG Energy Solution, Ltd.

Inventor： Chi Ho Jo ,  Wang Mo Jung ,  Hye Hyeon Kim ,  Tae Gu Yoo ,  Jin Tae Hwang ,  Hae Jung Jung ,  Jong Wook Heo

IPC: H01M4/505 ,  H01M4/04 ,  H01M4/587 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/525 ,  H01M10/052 ,  H01M4/02

CPC classification number: H01M4/505 ,  H01M4/0404 ,  H01M4/587 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/525 ,  H01M10/052 ,  H01M2004/028

Abstract: Provided are a positive electrode for a lithium secondary battery and a lithium secondary battery containing the same. The positive electrode includes a positive electrode current collector and a positive electrode mixture layer disposed thereon and includes a positive electrode active material, a positive electrode additive represented by Formula 1 (LipCo(1-q)M1qO4), a conductive material, and a binder. Furthermore, Equation 1 (RLCZO/R0) is 1.55 or less, wherein RLCO represents an electrode sheet resistance when the positive electrode additive represented by Formula 1 is contained in the positive electrode mixture layer, and R0 represents an electrode sheet resistance when the positive electrode additive represented by Formula 1 is not contained in the positive electrode mixture layer. The positive electrode is manufactured using a pre-dispersion containing the positive electrode additive in a positive electrode mixture layer as an irreversible additive.

公开(公告)号：US20230002899A1

公开(公告)日：2023-01-05

申请号：US17781925

申请日：2021-01-12

Applicant: LG Energy Solution, Ltd.

Inventor： Seul Ki Chae ,  Dae Jin Lee ,  Dong Hwi Kim ,  Jin Tae Hwang ,  Hyeong Il Kim ,  Wang Mo Jung ,  Dong Hun Lee

IPC: C23C16/455 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/04

Abstract: A method of preparing a positive electrode active material for a secondary battery includes preparing a lithium composite transition metal oxide which includes nickel, cobalt, and manganese and contains 60 mol % or more of the nickel among all metals except lithium, adding a moisture absorbent and the lithium composite transition metal oxide into an atomic layer deposition (ALD) reactor, and adding a coating metal precursor into the atomic layer deposition (ALD) reactor and forming a metal oxide coating layer on surfaces of particles of the lithium composite transition metal oxide by atomic layer deposition (ALD).