公开(公告)号：US20250054942A1

公开(公告)日：2025-02-13

申请号：US18723063

申请日：2022-12-22

Applicant: LG Energy Solution, Ltd.

Inventor： Eun Sol Lho ,  Gi Beom Han ,  Jong Woo Kim ,  Wang Mo Jung ,  Sang Min Park ,  Sang Wook Lee ,  Seul Ki Kim ,  Hyeong II Kim

IPC: H01M4/131 ,  H01M4/02 ,  H01M4/36 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525

Abstract: A positive electrode for a lithium secondary battery includes a collector; and a positive electrode active material layer disposed on at least one surface of the collector, wherein the ratio of a peak intensity of a (003) plane to a peak intensity of a (101) plane of the positive electrode measured by X-ray diffraction analysis is 8 or more.

公开(公告)号：US20250046814A1

公开(公告)日：2025-02-06

申请号：US18926592

申请日：2024-10-25

Applicant: LG Energy Solution, Ltd.

Inventor： So Ra Baek ,  Min Suk Kang ,  Sang Wook Lee ,  Wang Mo Jung ,  Dong Hun Lee ,  Hye Lim Jeon ,  Eun Sol Lho

IPC: H01M4/525 ,  C01B35/12 ,  C01G53/00 ,  H01M4/02 ,  H01M4/04 ,  H01M4/131 ,  H01M4/1315 ,  H01M4/1391 ,  H01M4/13915 ,  H01M4/36 ,  H01M4/505 ,  H01M4/62 ,  H01M10/0525

Abstract: A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide comprising nickel (Ni), cobalt (Co), and manganese (Mn), and a coating layer formed on surfaces of the lithium composite transition metal oxide, wherein, in the lithium composite transition metal oxide, an amount of the nickel (Ni) in a total amount of transition metals is 60 mol % or more, and an amount of the manganese (Mn) is greater than an amount of the cobalt (Co), and the coating layer comprises a compound represented by Formula 1: LiaM1bOc   [Formula 1] wherein, M1 includes aluminum (Al) and at least one selected from the group consisting of boron (B), silicon (Si), titanium (Ti), and phosphorus (P), and 1≤a≤4, 1≤b≤8, and 1≤c≤20.

公开(公告)号：US12132199B2

公开(公告)日：2024-10-29

申请号：US18207211

申请日：2023-06-08

Applicant: LG Energy Solution, Ltd.

Inventor： Byung Chun Park ,  Hong Kyu Park ,  Wang Mo Jung ,  Seong Hoon Kang

IPC: H01M4/36 ,  C01G53/00 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/366 ,  C01G53/42 ,  C01G53/50 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  C01P2004/61 ,  C01P2004/84 ,  C01P2004/88 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode active material includes a core including a first lithium complex metal oxide, and a shell located surrounding the core and including a second lithium complex metal oxide, and further includes a buffer layer located between the core and the shell. The buffer layer includes a pore, and a three-dimensional network structure of a third lithium complex metal oxide which is connecting the core and the shell. Accordingly, the positive electrode active material is capable of enhancing an output property and a life property by minimizing destruction of the active material caused by a rolling process during the electrode preparation, maximizing reactivity with an electrolyte liquid, and by the particles that form the shell having a crystal structure with orientation facilitating lithium ion intercalation and deintercalation.

公开(公告)号：US12126020B2

公开(公告)日：2024-10-22

申请号：US17922833

申请日：2022-01-28

Applicant: LG Energy Solution, Ltd.

Inventor： Dong Hwi Kim ,  Hak Yoon Kim ,  So Ra Baek ,  Hyuck Hur ,  Hyeong Il Kim ,  Seul Ki Chae ,  Wang Mo Jung ,  Dong Hun Lee

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

CPC classification number: H01M4/525 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode and a lithium secondary including the same is disclosed herein. In some embodiments, the positive electrode includes a positive electrode current collector, a first positive electrode active material layer and a second positive electrode active material layer sequentially stacked on the positive electrode current collector, wherein the first positive electrode active material layer and the second positive electrode active material layer include a bimodal positive active material, the first positive electrode active material layer includes small-diameter particles in the form of single particles, and the second positive electrode active material layer includes small-diameter particles in the form of secondary particles. The positive electrode has improved capacity, efficiency, lifespan, output properties, and thermal stability.

公开(公告)号：US12021228B2

公开(公告)日：2024-06-25

申请号：US17780128

申请日：2020-12-04

Applicant: LG Energy Solution, Ltd.

Inventor： Gi Beom Han ,  Wang Mo Jung ,  Sang Wook Lee ,  Hak Yoon Kim ,  So Ra Baek ,  Jung Min Han

IPC: H01M4/04 ,  C01G53/00 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/02

CPC classification number: H01M4/366 ,  C01G53/50 ,  H01M4/0471 ,  H01M4/505 ,  H01M4/525 ,  C01P2002/50 ,  C01P2004/50 ,  C01P2004/84 ,  C01P2006/40 ,  H01M2004/028

Abstract: A method of producing a positive electrode material for a secondary battery includes preparing a lithium composite transition metal oxide containing nickel, cobalt, and manganese, forming a coating layer on a surface of the lithium composite transition metal oxide, and post-treating the lithium composite transition metal oxide having the coating layer formed thereon, wherein the post-treating is performed by exposing the lithium composite transition metal oxide having the coating layer formed thereon to moisture at a relative humidity of 10% to 50% at 25° C., and then heat treating the lithium composite transition metal oxide to remove residual moisture.

公开(公告)号：US11993846B2

公开(公告)日：2024-05-28

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: H01M4/04 ,  C23C16/455 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/02

CPC classification number: C23C16/45555 ,  H01M4/0428 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M2004/028

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).

公开(公告)号：US20240059581A1

公开(公告)日：2024-02-22

申请号：US18269719

申请日：2022-05-10

Applicant: LG Energy Solution, Ltd.

Inventor： Tae Gu Yoo ,  Boram Lee ,  Hae Jung Jung ,  Wang Mo Jung ,  Byungchun Park

IPC: C01G53/00

CPC classification number: C01G53/42 ,  C01P2002/54 ,  C01P2006/40

Abstract: An additive for a positive electrode of a lithium secondary battery comprising a lithium transition metal oxide, Li3PO4 and Li5AlO4. The lithium transition metal oxide is doped with aluminum. The additive comprising Li3PO4 and Li5AlO4 together with the lithium transition metal oxide has a function of improving battery stability when applied to a positive electrode of a lithium secondary battery. Specifically, when a general lithium transition metal oxide is applied to the positive electrode of a lithium secondary battery, it may cause a side reaction with the electrolyte solution to generate gas in the battery, which may cause a problem with poor stability. However, Li3PO4 and Li5AlO4 are uniformly mixed with the lithium transition metal oxide or partially form a coating layer, and some aluminum is doped into the lithium transition metal oxide to inhibit the lithium transition metal oxide from causing side reactions with the electrolyte solution.

公开(公告)号：US20230387413A1

公开(公告)日：2023-11-30

申请号：US18031387

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: H01M4/62 ,  H01M4/505 ,  H01M4/525 ,  H01M4/131 ,  H01M4/36 ,  H01M4/48 ,  H01M4/587 ,  H01M4/134 ,  H01M4/133 ,  H01M10/44 ,  H01M10/0525

CPC classification number: H01M4/62 ,  H01M4/505 ,  H01M4/525 ,  H01M4/131 ,  H01M4/364 ,  H01M4/483 ,  H01M4/587 ,  H01M4/134 ,  H01M4/133 ,  H01M10/44 ,  H01M10/0525 ,  H01M2004/028

Abstract: A lithium secondary battery and a method of manufacturing the lithium secondary battery are provided. In the lithium secondary battery, a positive electrode additive represented by Formula 1 as an irreversible additive is included in a positive electrode mixture layer, and a ratio (CC/DC) of an initial charge capacity (CC) to an initial discharge capacity (DC) is adjusted within a specific range, thereby reducing the amount of oxygen gas generated in the charging/discharging of the lithium secondary battery, and at the same time, inhibiting self-discharging and improving an operating voltage by improving the open circuit voltage of the battery in initial activation and/or subsequent high-temperature storage. The lithium secondary battery including the same can be effectively used as a power source for mid-to-large devices such as electric vehicles.

公开(公告)号：US20230261185A1

公开(公告)日：2023-08-17

申请号：US18005134

申请日：2022-02-21

Applicant: LG Energy Solution, Ltd.

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

IPC: H01M4/525 ,  H01M4/485 ,  H01M4/04 ,  H01M4/62 ,  H01M10/052

CPC classification number: H01M4/525 ,  H01M4/485 ,  H01M4/0404 ,  H01M4/625 ,  H01M10/052 ,  H01M2004/028

Abstract: Provided are a sacrificial positive electrode material with a reduced gas generation amount and a method of preparing the same. The sacrificial positive electrode material includes a lithium cobalt zinc oxide represented by Chemical Formula 1 (LixCo(1-y)ZnyO4) and the sacrificial positive electrode material has a powder electrical conductivity of 1×10−4 S/cm to 1×10−2 S/cm. The sacrificial positive electrode material can reduce the generation of gas, particularly, oxygen (O2) gas, during charging and discharging of a battery after activation and achieve a high charge/discharge capacity by including a lithium cobalt metal oxide represented by Chemical Formula 1 (LixCo(1-y)ZnyO4), which is doped with a specific fraction of zinc, and by having a powder electrical conductivity adjusted within a specific range, and thus the stability and lifespan of a battery including the same are effectively enhanced.

公开(公告)号：US20230207799A1

公开(公告)日：2023-06-29

申请号：US18083336

申请日：2022-12-16

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: H01M4/525 ,  H01M4/505 ,  H01M4/36 ,  C01G53/00

CPC classification number: H01M4/525 ,  H01M4/505 ,  H01M4/366 ,  C01G53/50 ,  H01M2004/028

Abstract: A positive electrode active material is disclosed herein. In some embodiments, a positive electrode active material includes a lithium composite transition metal oxide in the form of at least one of single particles or pseudo-single particles, wherein each single particle consists of one nodule, and each pseudo-single particle is a composite of 30 or fewer nodules, wherein the lithium composite transition metal oxide includes Ni, Co, Mn, and Al, wherein a molar ratio of the number of moles of Ni to the total number of moles of all metal elements except lithium is 0.83 to less than 1, a molar ratio of the number of moles of Co to the number of moles of Mn is 0.5 to less than 1, and a molar ratio ratio of the number of moles of Co to the number of moles of Al is 5 to 15.