公开(公告)号：US20230074059A1

公开(公告)日：2023-03-09

申请号：US17788897

申请日：2021-01-29

Applicant: LG Energy Solution, Ltd.

Inventor： Min Kwak ,  Tae Gon Kim ,  Byung Chun Park ,  Bo Ram Lee ,  Tae Gu Yoo

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

Abstract: A positive electrode active material, a method for producing the same, and a positive electrode and a lithium secondary battery in including the same are disclosed herein. In some embodiments, a method of producing a positive electrode active material includes mixing a lithium transition metal oxide and a carbon-based material having a hollow structure to form a mixture, and mechanically treating the mixture to form a carbon coating layer on the surface of the lithium transition metal oxide, wherein the carbon-based material has a chain shape, and has a specific surface area of 500 m2/g or greater, a graphitization degree (ID/IG) of 1.0 or higher, and a dibutylphthalate (DBP) absorption of 300 mL/100 g or greater.

公开(公告)号：US20230059519A1

公开(公告)日：2023-02-23

申请号：US17784319

申请日：2021-02-26

Applicant: LG Energy Solution, Ltd.

Inventor： Tae Gu Yoo ,  Byung Chun Park ,  Bo Ram Lee ,  Tae Gon Kim ,  Min Kwak ,  Wang Mo Jung

IPC: C01G53/00 ,  H01M50/46 ,  H01M10/052

Abstract: Provided is a method of preparing an irreversible positive electrode additive for a secondary battery, which includes mixing Li2O, NiO, and NH4VO3 and performing thermal treatment to prepare a lithium nickel composite oxide represented by Chemical Formula 1 below, wherein the NH4VO3 is mixed in an amount of 1.5 to 6.5 parts by weight with respect to a total of 100 parts by weight of the Li2O, NiO, and NH4VO3. Li2+aNi1−b−cM1bVcO2−dAd  [Chemical Formula 1] In Chemical Formula 1,
M1 is at least one selected from the group consisting of Cu, Mg, Pt, Al, Co, P, W, Zr, Nb, and B, A is at least one selected from the group consisting of F, S, Cl, and Br, and 0≤a≤0.2, 0≤b≤0.5, 0.01≤c≤0.065, and 0≤d≤0.2 are satisfied.

公开(公告)号：US20220158195A1

公开(公告)日：2022-05-19

申请号：US17598617

申请日：2020-09-28

Applicant: LG Energy Solution, Ltd.

Inventor： Tae Gon Kim ,  Sin Young Park ,  Bo Ram Lee ,  Hyung Man Cho ,  Tae Gu Yoo ,  Min Kwak

IPC: H01M4/62

Abstract: An electrode includes an electrode active material layer, wherein the electrode active material layer includes an electrode active material and a conductive agent, wherein the conductive agent includes a first conductive agent and a second conductive agent, wherein the first conductive agent includes a secondary particle in which a plurality of graphene sheets are arranged in different directions and a portion of one graphene sheet is connected to a portion of adjacent another graphene sheet, the second conductive agent includes a carbon nanotube structure in which 2 to 5,000 single-walled carbon nanotube units are bonded to each other, and the carbon nanotube structure is included in an amount of 0.01 wt % to 0.5 wt % in the electrode active material layer. A secondary battery including the electrode is also provided.

公开(公告)号：US12261288B2

公开(公告)日：2025-03-25

申请号：US17788897

申请日：2021-01-29

Applicant: LG Energy Solution, Ltd.

Inventor： Min Kwak ,  Tae Gon Kim ,  Byung Chun Park ,  Bo Ram Lee ,  Tae Gu Yoo

IPC: H01M4/505 ,  C01G53/50 ,  H01B1/08 ,  H01M4/36 ,  H01M4/525 ,  H01M4/62 ,  H01M4/02 ,  H01M10/052

Abstract: A positive electrode active material, a method for producing the same, and a positive electrode and a lithium secondary battery in including the same are disclosed herein. In some embodiments, a method of producing a positive electrode active material includes mixing a lithium transition metal oxide and a carbon-based material having a hollow structure to form a mixture, and mechanically treating the mixture to form a carbon coating layer on the surface of the lithium transition metal oxide, wherein the carbon-based material has a chain shape, and has a specific surface area of 500 m2/g or greater, a graphitization degree (ID/IG) of 1.0 or higher, and a dibutylphthalate (DBP) absorption of 300 mL/100 g or greater.

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：US20250006906A1

公开(公告)日：2025-01-02

申请号：US18756937

申请日：2024-06-27

Applicant: LG Energy Solution, Ltd.

Inventor： Jong Woo Kim ,  Ji Young Ju ,  Tae Gu Yoo ,  Seung Su Yoo ,  Byung Chun Park ,  Chi Ho Jo

IPC: H01M4/36 ,  C01G53/00 ,  H01M4/02 ,  H01M4/131 ,  H01M4/134 ,  H01M4/46 ,  H01M4/525 ,  H01M10/052

Abstract: A positive electrode active material includes a lithium composite transition metal oxide in the form of a single particle composed of one single nodule and/or in the form of a pseudo-single particle, which is a composite of 30 or less nodules, and a coating layer formed on the surface of the lithium composite transition metal oxide particle. The coating layer contains aluminum (Al) and tungsten (W). The positive electrode active material satisfies Equation 1 below: 45≤X×X′≤56  [Equation 1] wherein, X is the content of nickel among all metals except for lithium in the lithium composite transition metal oxide (unit: mol %), and X′ is the BET specific surface area of the positive electrode active material (unit: m2/g).

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：US20240313210A1

公开(公告)日：2024-09-19

申请号：US18677050

申请日：2024-05-29

Applicant: LG Energy Solution, Ltd.

Inventor： Gi Beom Han ,  Sang Min Park ,  Ji Hye Kim ,  Tae Gu Yoo ,  Wang Mo Jung

IPC: H01M4/505 ,  H01M4/02 ,  H01M4/04 ,  H01M4/36 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M4/505 ,  H01M4/0471 ,  H01M4/366 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive electrode active material for a secondary battery is provided, which includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein a particle of the lithium composite transition metal oxide includes a core portion and a resistance portion formed on a surface of the core portion, and is composed of a single particle, wherein the core portion has a layered crystal structure of space group R-3m, and the resistance portion has a cubic rock-salt structure of space group Fm-3m.

公开(公告)号：US11909045B2

公开(公告)日：2024-02-20

申请号：US18100778

申请日：2023-01-24

Applicant: LG Energy Solution, Ltd.

Inventor： Tae Gu Yoo ,  Younguk Park ,  Jintae Hwang ,  Wang Mo Jung ,  Sungbin Park

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

CPC classification number: H01M4/525 ,  C01G53/50 ,  H01M4/505 ,  H01M10/0525 ,  C01P2002/52 ,  C01P2002/60 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/61 ,  C01P2006/40 ,  H01M2004/028

Abstract: Exemplary embodiments of positive electrode active materials in the form of single particles, and a method of preparing each of them, are provided. The single particles of the exemplary embodiments include single particles of a nickel-based lithium composite metal oxide, having a plurality of crystal grains, each having a size of 180 nm to 300 nm, as analyzed by a Cu Kα X-ray (X-rα). The single particles include a metal doped in the crystal lattice thereof. One embodiment includes a surface coating. The total content of the metal doped in the crystal lattice thereof and the metal of the metal oxide coated on the surface thereof is controlled in the range of 2500 ppm to 6000 ppm.

公开(公告)号：US20230369602A1

公开(公告)日：2023-11-16

申请号：US18025980

申请日：2022-05-06

Applicant: LG Energy Solution, Ltd.

Inventor： Ji Hye Kim ,  Sang Seung Oh ,  Hye Hyeon Kim ,  Chi Ho Jo ,  Tae Gu Yoo

IPC: H01M4/62 ,  H01M4/131

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

Abstract: The present technology relates to a positive electrode additive for a lithium secondary battery and a positive electrode for a lithium secondary battery including the same, wherein the positive electrode additive contains a carbon material on a surface of a lithium cobalt oxide represented by Chemical Formula 1 to improve the low electrical conductivity of the positive electrode additive, and an effect of improving the problem caused by the amount of gases generated during initial charging and discharging (i.e., “activation”) is excellent, and thus a positive electrode and lithium secondary battery including the positive electrode additive have excellent electrical performance.