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.

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：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：US20230378433A1

公开(公告)日：2023-11-23

申请号：US18031473

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: H01M4/131 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/38 ,  H01M4/134

CPC classification number: H01M4/131 ,  H01M10/0525 ,  H01M4/625 ,  H01M4/386 ,  H01M4/134 ,  H01M2004/028

Abstract: The present technology provides a positive electrode for a lithium secondary battery and a lithium secondary battery including the same. In the positive electrode, a positive electrode additive represented by Formula 1 is contained in a positive electrode mixture layer, and specific X-ray diffraction (XRD) and/or extended X-ray absorption fine-structure (EXAFS) peak(s) are controlled for cobalt remaining in the positive electrode mixture layer after initial charging to SOC 100% to have a specific oxidation number, thereby reducing side reactions caused by the irreversible additive, that is, the positive electrode additive, and reducing the amount of gas such as oxygen generated during charging/discharging. Therefore, the lithium secondary battery has an excellent effect of improving battery safety and electrical performance.

公开(公告)号：US20230275209A1

公开(公告)日：2023-08-31

申请号：US18195089

申请日：2023-05-09

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

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, which is doped with 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, and contains nickel in an amount of 60 mol % or more based on a total number of moles of transition metals excluding lithium, 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 doping element M2 is included in an amount of 3,580 ppm to 7,620 ppm based on a total weight of the positive electrode active material.

公开(公告)号：US20230223526A1

公开(公告)日：2023-07-13

申请号：US18151079

申请日：2023-01-06

Applicant: LG Energy Solution Ltd.

Inventor： Jong Wook Heo ,  Wang Mo Jung ,  Chi Ho JO ,  Jin Tae Hwang ,  Hae Jung Jung ,  Byung Joon Chae ,  Tae Gu Yoo ,  Suk Bae Yoon ,  Hyeon Jin Cho

IPC: H01M4/485 ,  H01M4/525 ,  H01M4/505 ,  H01M4/04 ,  H01M10/0525

CPC classification number: H01M4/485 ,  H01M4/525 ,  H01M4/505 ,  H01M4/0404 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive electrode material powder including a lithium nickel-based oxide represented by Chemical Formula 1 (LiaNibCocM1dM2eO2) and having a degree of single-particle formation, represented by the following Equation (1), of 0.3 to 0.8:







∑

i
=
1

n




4
⁢
π

3

⁢

R
i
3



n

×


1

D
50


.





In Equation (1), Ri is a radius of the ith grain as measured by subjecting an electrode manufactured using the positive electrode material powder to ion milling and then analyzing the cross section of the electrode by electron backscatter diffraction (EBSD), n is the total number of grains as measured by the EBSD analysis and ranges from 350 to 450, and D50 is a volume-cumulative average particle diameter of the positive electrode material powder as measured using a laser diffraction particle size analyzer.

公开(公告)号：US20230083736A1

公开(公告)日：2023-03-16

申请号：US17941284

申请日：2022-09-09

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: H01M4/525 ,  C01G53/00 ,  H01M4/505 ,  H01M10/052

Abstract: A positive electrode active material and a method for producing the same are disclosed herein. In some embodiments, a positive electrode active material includes a lithium-nickel-based oxide in the form of at least one of single particles or a pseudo-single particles, wherein each single particle consists of one nodule, wherein each pseudo-primary particles is a composite of 30 or fewer nodules, wherein on the surface of the lithium-nickel-based oxide, a number of nickel ions having an oxidation number of +3 or higher is greater than a number of nickel ions having an oxidation number less than +3.