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：US12249712B2

公开(公告)日：2025-03-11

申请号：US18609708

申请日：2024-03-19

Applicant: LG Energy Solution, Ltd.

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

IPC: H01M4/00 ,  C01G53/50 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

Abstract: A positive electrode active material in the form of a single particle and a lithium secondary battery containing the positive electrode active material thereof are provided. The positive electrode active material has a nickel-based lithium composite metal oxide single particle. The single particle includes a metal doped in the crystal lattice thereof. The single particle includes, in the crystal lattice, a surface part having a rock salt structure, a spinel structure, or a mixed structure thereof from a surface of the single particle to a depth of 0.13% to 5.26% of a radius of the single particle, and a central part having a layered structure from an interface with the surface part thereof to the center part of the single particle.

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：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：US20240014400A1

公开(公告)日：2024-01-11

申请号：US18025254

申请日：2022-04-19

Applicant: LG Energy Solution, Ltd.

Inventor： Gyeong Seop Lee ,  Sang Seung Oh ,  Hye Hyeon Kim ,  Chi Ho Jo ,  Tae Gu Yoo

IPC: H01M4/62 ,  H01M4/131 ,  H01M10/052 ,  H01M4/04 ,  H01M4/525 ,  H01M4/505

CPC classification number: H01M4/628 ,  H01M4/131 ,  H01M4/625 ,  H01M10/052 ,  H01M4/0404 ,  H01M4/525 ,  H01M4/505 ,  H01M2004/028

Abstract: Provided is a positive electrode for a lithium secondary battery and a lithium secondary battery including the same, wherein the positive electrode is manufactured by using a pre-dispersion containing a positive electrode additive represented by Chemical Formula 1 and a conductive material having a linear structure in a positive electrode mixture layer as an irreversible additive and, by adjusting the electrode sheet resistance to satisfy a specific range, it is possible to reduce the amount of oxygen gas generated during charging and discharging, as well as easily improve the charging and discharging efficiency of the lithium secondary battery.

公开(公告)号：US20230352678A1

公开(公告)日：2023-11-02

申请号：US18214800

申请日：2023-06-27

Applicant: LG Energy Solution, Ltd.

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

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

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: A positive electrode active material in the form of a single particle and a lithium secondary battery containing the positive electrode active material thereof are provided. The positive electrode active material has a nickel-based lithium composite metal oxide single particle. The single particle has a plurality of crystal grains. An average particle size (D50) of the single particle is from 3.5 μm to 8 μm. The single particle includes a metal doped in the crystal lattice thereof.

公开(公告)号：US20230331583A1

公开(公告)日：2023-10-19

申请号：US18004743

申请日：2022-02-18

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: C01G51/00 ,  H01M10/052

CPC classification number: C01G51/42 ,  C01G51/006 ,  H01M10/052 ,  C01P2004/61 ,  C01P2006/40

Abstract: Provided are a sacrificial positive electrode material with a reduced gas generation amount and a method of preparing the same. The method includes calcinating a raw material mixture of lithium oxide (Li2O) and cobalt oxide (CoO) to prepare a lithium cobalt metal oxide, wherein the lithium oxide (Li2O) has an average particle size (D50) of 50 µm or less, and the resulting sacrificial positive electrode material has an electrical conductivity of 1 × 10-4 S/cm or more. The method of preparing a sacrificial positive electrode material can reduce the generation of gas, particularly, oxygen (O2) gas, in an electrode assembly during charging of a battery by adjusting the electrical conductivity of the sacrificial positive electrode material within a specific range using lithium oxide that satisfies a specific size, and thus the stability and lifespan of the battery including the same can be effectively enhanced.

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.