公开(公告)号：US20250091902A1

公开(公告)日：2025-03-20

申请号：US18883479

申请日：2024-09-12

Applicant: LG Energy Solution, Ltd.

Inventor： Eun Sol Lho ,  Jin Tae Hwang ,  Hyeong II Kim ,  Su Yeon Oh ,  Seok Jin Lee

IPC: C01G53/00 ,  H01M10/052

Abstract: A blended positive electrode material includes a first positive electrode active material containing a first lithium transition metal oxide and a second positive electrode active material containing a second lithium transition metal oxide, wherein the first lithium transition metal oxide and the second lithium transition metal oxide each have a nickel content of 70 mol % or greater with respect to of all metals excluding lithium, the first positive electrode active material has a greater D50 than the second positive electrode active material, and EELS analysis results for particle surfaces of both the first positive electrode active material and the second positive electrode active material satisfy Equation 1. A method for preparing the blended positive electrode material is also provided.

公开(公告)号：US20250070134A1

公开(公告)日：2025-02-27

申请号：US18723145

申请日：2022-12-23

Applicant: LG Energy Solution, Ltd.

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

IPC: H01M4/36 ,  C01G53/00 ,  H01M4/02 ,  H01M4/525 ,  H01M4/62 ,  H01M10/052

Abstract: A positive electrode active material includes lithium nickel-based oxide particles having a single-particle form composed of a single nodule or a single-particle-like form, which is a complex of at most 30 nodules. The positive electrode active material further includes a coating layer formed on the surface of the lithium nickel-based oxide particles, wherein the coating layer is formed by using a nano-sized coating precursor which is a chelate complex comprising lithium, nickel, cobalt, and Ma, where Ma is Mn, Al, or a combination thereof.

公开(公告)号：US12183913B2

公开(公告)日：2024-12-31

申请号：US18411502

申请日：2024-01-12

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 ,  H01M4/02

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：US20230086038A1

公开(公告)日：2023-03-23

申请号：US17941208

申请日：2022-09-09

Applicant: LG Energy Solution, Ltd.

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

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/36 ,  H01M4/62 ,  H01M4/131 ,  C01G53/00

Abstract: A positive electrode active material powder for a lithium secondary battery, which includes a lithium composite transition metal oxide in the form of a single particle consisting of one nodule, or a pseudo-single crystal, which is a composite of 30 or less nodules, where the positive electrode active material powder satisfies Expression 1: 0.5≤Dmean33 dpress/D50≤3.Where Dmean is an average particle diameter of the nodules as measured using an electron backscatter diffraction (EBSD) pattern analyzer, dpress is a press density measured after 5 g of the positive electrode active material powder is input into a circular mold with a diameter of 2 cm and pressurized at a pressure of 2000 kgf, and D50 is a value corresponding to a cumulative volume of 50% in the particle size distribution of the positive electrode active material powder.

公开(公告)号：US20220029145A1

公开(公告)日：2022-01-27

申请号：US17311914

申请日：2019-12-06

Applicant: LG Energy Solution, Ltd.

Inventor： Sung Bin Park ,  Dong Hun Lee ,  Hyung Man Cho ,  Jung Min Han ,  Jin Tae Hwang ,  Wang Mo Jung

IPC: H01M4/04 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C23C16/40

Abstract: The present disclosure provides a method for manufacturing a positive electrode for a secondary battery, the method including forming a positive electrode mixture layer including a positive electrode active material on a positive electrode current collector, and forming a metal oxide coating layer on the positive electrode mixture layer by atomic layer deposition, wherein the positive electrode active material includes lithium composite transition metal oxide particles and a boron-containing coating layer formed on the lithium composite transition metal oxide particles, and the lithium composite transition metal oxide particles include nickel (Ni), cobalt (Co), and manganese (Mn), wherein the nickel (Ni) is 60 mol % or greater of all metals excluding lithium.