公开(公告)号：US20250038168A1

公开(公告)日：2025-01-30

申请号：US18715900

申请日：2022-12-21

Applicant: LG Energy Solution, Ltd.

Inventor： So Ra Baek ,  Kang Joon Park ,  Wang Mo Jung ,  Sin Young Park ,  Hyuck Hur ,  Dong Hwi Kim ,  Min Kwak ,  Seul Ki Chae

IPC: H01M4/04 ,  H01M4/02 ,  H01M4/36 ,  H01M4/525 ,  H01M10/0525

Abstract: A method of manufacturing a lithium secondary battery includes (1) mixing a transition metal precursor and a lithium source material and then sintering the mixture to prepare a lithium composite transition metal oxide, (2) mixing the lithium composite transition metal oxide with a cobalt-containing raw material and heat-treating the mixture at 550° C. to 700° C. to form a cobalt coating layer on the oxide, (3) mixing the lithium composite transition metal oxide on which the cobalt coating layer is formed with a boron-containing raw material and heat-treating the mixture at 400° C. to 500° C. to prepare a positive electrode active material including a boron coating layer, (4) applying the positive electrode active material onto a positive electrode current collector to prepare a positive electrode, and (5) assembling the positive electrode, the negative electrode including a silicon-based negative electrode active material, and a separator, and injecting an electrolyte.

公开(公告)号：US12176533B2

公开(公告)日：2024-12-24

申请号：US17297823

申请日：2019-11-01

Applicant: LG Energy Solution, Ltd.

Inventor： Wen Xiu Wang ,  Wang Mo Jung ,  Min Suk Kang ,  Sang Wook Lee ,  So Ra Baek ,  Eun Sol Lho

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

Abstract: In one arrangement, the present disclosure relates to a positive electrode active material including a nickel-cobalt-manganese-based lithium transition metal oxide which contains nickel in an amount of 60 mol % or more based on a total number of moles of metals excluding lithium, wherein the nickel-cobalt-manganese-based lithium transition metal oxide is doped with doping element M1 (where the doping element M1 is a metallic element including Al) and doping element M2 (where the doping element M2 is at least one metallic element selected from the group consisting of Mg, La, Ti, Zn, B, W, Ni, Co, Fe, Cr, V, Ru, Cu, Cd, Ag, Y, Sc, Ga, In, As, Sb, Pt, Au, and Si), where the doping element M1 can be in an amount of 100 ppm to 10,000 ppm, and the doping element M1 and the doping element M2 are included in a weight ratio of 50:50 to 99:1.

公开(公告)号：US20240387798A1

公开(公告)日：2024-11-21

申请号：US18787568

申请日：2024-07-29

Applicant: LG Energy Solution, Ltd.

Inventor： Dong Hwi Kim ,  Dong Hun Lee ,  Wang Mo Jung ,  Sung Bin Park ,  Gi Beom Han

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

Abstract: A positive electrode material for a lithium secondary battery includes a first positive electrode active material and a second positive electrode active material, both of which are lithium composite transition metal oxides containing transition metals. The first positive electrode active material has a larger average particle size (D50) than the second positive electrode active material, wherein a ratio (Li/Me)1 of the mole number of lithium with respect to the total mole number of transition metals of the first positive electrode active material is more than 1 to 1.5 or less, and a ratio (Li/Me)2 of the mole number of lithium (Li) with respect to the total mole number of transition metals of the second positive electrode active material is 0.9 to 1. The second positive electrode active material has a crystallite size of 180 nm or more.

公开(公告)号：US20240351914A1

公开(公告)日：2024-10-24

申请号：US18688074

申请日：2022-09-08

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: C01G53/00 ,  H01M10/04

CPC classification number: C01G53/50 ,  H01M10/0427 ,  C01P2002/01 ,  C01P2004/04 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/84 ,  C01P2006/40

Abstract: present disclosure A positive electrode active material and a method for preparing the same are provided. The method for preparing a positive electrode material present disclosure—includes the steps of mixing a transition metal precursor and a lithium raw material and primarily sintering the mixture to prepare a lithium nickel-based oxide in the form of single particles or quasi-single particles, secondarily sintering the lithium nickel-based oxide in the form of single particles or quasi-single particles, and mixing the secondarily sintered lithium nickel-based oxide and a boron raw material and then heat-treating the mixture to form a coating layer.

公开(公告)号：US20240282928A1

公开(公告)日：2024-08-22

申请号：US18561009

申请日：2022-09-19

Applicant: LG Energy Solution, Ltd.

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

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/525 ,  H01M4/62

CPC classification number: H01M4/366 ,  H01M4/525 ,  H01M4/62 ,  H01M2004/021 ,  H01M2004/028

Abstract: A method of preparing a positive electrode active material for a lithium secondary battery which includes:



(1) mixing a lithium composite transition metal oxide in a form of a single particle or pseudo-single particle with a cobalt-containing raw material and performing a heat treatment to form a cobalt coating layer on a surface of the lithium composite transition metal oxide; and
(2) mixing the lithium composite transition metal oxide having the cobalt coating layer formed thereon with a boron-containing raw material and performing a heat treatment to form a boron coating layer on the cobalt coating layer. A positive electrode active material for a lithium secondary battery which is prepared thereby, is also provided.

公开(公告)号：US12046750B2

公开(公告)日：2024-07-23

申请号：US17294923

申请日：2019-11-28

Applicant: LG Energy Solution, Ltd.

Inventor： Eun Sol Lho ,  Wang Mo Jung ,  Min Suk Kang ,  Sang Wook Lee ,  So Ra Baek ,  Wen Xiu Wang

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

CPC classification number: H01M4/525 ,  C01G53/50 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: The present disclosure relates to a positive electrode active material for a secondary battery, the positive electrode active material being a lithium composite transition metal oxide particle including nickel (Ni) and cobalt (Co) and including at least one of manganese (Mn) and aluminum (Al), wherein the lithium composite transition metal oxide particle includes 60 mol % or greater of the nickel (Ni) in all metals excluding lithium, a doping element is doped on the lithium composite transition metal oxide particle, and the particle intensity of the lithium composite transition metal oxide particle is 210 MPa to 290 MPa.

公开(公告)号：US20240030414A1

公开(公告)日：2024-01-25

申请号：US18265560

申请日：2021-12-07

Applicant: LG Energy Solution, Ltd.

Inventor： Seulki Chae ,  Hakyoon Kim ,  Sora Baek ,  Hyuck Hur ,  Dong Hwi Kim ,  Hyeongil Kim ,  Wang Mo Jung ,  Donghun Lee

IPC: H01M4/36 ,  H01M4/48 ,  H01M10/052 ,  H01M4/131 ,  H01M4/525 ,  H01M4/505 ,  C01G53/00

CPC classification number: H01M4/366 ,  H01M4/48 ,  H01M10/052 ,  H01M4/131 ,  H01M4/525 ,  H01M4/505 ,  C01G53/006 ,  H01M2004/028

Abstract: Disclosed is a positive electrode material for a lithium secondary battery capable of improving the problems of resistance and lifetime deterioration of the battery by forming a thin and uniform metal oxide on the surface of the lithium nickel cobalt manganese-based positive electrode active material, and a method for preparing the same and a lithium secondary battery comprising the same. The method of preparing the positive electrode material for the lithium secondary battery comprises a method of coating a metal oxide on the surface of a lithium nickel cobalt manganese-based positive electrode active material through a chemical vapor deposition. The method includes placing the lithium nickel cobalt manganese-based positive electrode active material in a deposition apparatus and supplying a metal oxide precursor and a carrier gas, and the lithium nickel cobalt manganese-based positive electrode active material is stirred during deposition.

公开(公告)号：US20240021788A1

公开(公告)日：2024-01-18

申请号：US18038515

申请日：2021-12-17

Applicant: LG Energy Solution, Ltd.

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

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

CPC classification number: H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  C01G53/50 ,  H01M2004/028

Abstract: A bimodal positive electrode active material includes a first lithium transition metal oxide and a second lithium transition metal oxide having an average particle diameter (D50) smaller than that of the first lithium transition metal oxide, wherein the first lithium transition metal oxide has higher particle strength and smaller crystalline size than the second lithium transition metal oxide, and a positive electrode and a lithium secondary battery which include the positive electrode active material. A positive electrode active material may improve high-temperature life characteristics and high-temperature storage characteristics of a lithium secondary battery. A positive electrode and a lithium secondary battery which include the positive electrode active material are also provided.

公开(公告)号：US20240014399A1

公开(公告)日：2024-01-11

申请号：US18022834

申请日：2021-11-18

Applicant: LG Energy Solution, Ltd.

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

IPC: H01M4/62 ,  H01M4/131

CPC classification number: H01M4/628 ,  H01M4/131 ,  H01M2004/028

Abstract: An additive for a positive electrode of a lithium secondary battery, the additive including a lithium transition metal oxide, Li3PO4, Li5AlO4 and Li3BO3. The lithium transition metal oxide has an aluminum-doped form. The additive including Li3PO4, Li5AlO4 and Li3BO3 together with the lithium transition metal oxide has functionality of improving stability of a battery when used in a positive electrode of a lithium secondary battery. The Li3PO4, the Li5AlO4 and the Li3BO3 are evenly mixed with the lithium transition metal oxide or some thereof form a partial coating layer, or a portion of aluminum is doped to the lithium transition metal oxide to suppress the lithium transition metal oxide from causing a side reaction with an electrolyte liquid.

公开(公告)号：US20230420669A1

公开(公告)日：2023-12-28

申请号：US18038923

申请日：2021-11-30

Applicant: LG Energy Solution, Ltd.

Inventor： Sang Wook Lee ,  Dae Jin Lee ,  Sang Min Park ,  Min Kwak ,  Wang Mo Jung ,  Gi Beom Han ,  Eun Sol Lho ,  Joong Yeop Do ,  Kang Joon Park

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

CPC classification number: H01M4/525 ,  H01M4/505 ,  H01M10/052 ,  H01M2004/028

Abstract: The present invention relates to a positive electrode active material having low nickel disorder and high particle strength in a crystal structure, and capable of implementing a battery having excellent capacity properties and capacity retention, and a positive electrode and a lithium secondary battery including the same, wherein the positive electrode active material includes a large-diameter lithium transition metal oxide and a small-diameter lithium transition metal oxide whose average particle diameter (D50) is smaller than that of the large-diameter lithium transition metal oxide, wherein the large-diameter lithium transition metal oxide and the small-diameter lithium transition metal oxide each independently have a composition represented by Formula 1, and has a crystal grain size of 100 nm to 150 nm, wherein the difference in crystal grain size between the large-diameter lithium transition metal oxide and the small-diameter lithium transition metal oxide is less than 40 nm, and the positive electrode active material has a nickel disorder (Ni-disorder) of 1.5% or less.