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公开(公告)号：US20250062323A1
公开(公告)日：2025-02-20
申请号：US18720965
申请日：2023-01-06
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 , C01G53/00 , H01M4/02 , H01M4/525 , H01M10/052
Abstract: A positive electrode active material including a lithium nickel-based oxide in the form of a single particle composed of one nodule or a pseudo-single particle that is a composite of 30 or less nodules; and a coating portion which is formed in the form of an island on a portion of a surface of the lithium nickel-based oxide particle and includes cobalt (Co), wherein, in a Ni L3-edge spectrum obtained by measuring the surface of the lithium nickel-based oxide, which is in contact with the coating portion, by electron energy loss spectroscopy, an intensity at 855.5 eV is higher than an intensity at 853 eV. A preparation method thereof, a positive electrode and a lithium secondary battery which include the positive electrode active material are also provided.
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2.发明公开公开(公告)号：US20240186501A1
公开(公告)日：2024-06-06
申请号：US17924465
申请日：2022-04-19
Applicant: LG Energy Solution, Ltd.
Inventor： Kyu Tae Park , Sang Seung Oh , Hye Hyeon Kim , Chi Ho Jo
CPC classification number: H01M4/525 , C09D5/24 , C09D7/61 , C09D7/80 , C09D127/16 , H01M4/505 , C08K3/041 , C08K2003/2293 , C08K2003/2296 , C08K2201/001 , C08K2201/011 , C08K2201/014
Abstract: A pre-dispersion for a positive electrode and a positive electrode slurry for a lithium secondary battery containing the same are disclosed herein. In some embodiments, a pre-dispersion comprises a positive electrode additive represented by the following Chemical Formula 1, a first conductive material, a binder:
LipCo(1-q)M1qO4 [Chemical Formula 1]
wherein M1 is one or more elements selected from the group consisting of W, Cu, Fe, V, Cr, Ti, Zr, Zn, Al, In, Ta, Y, La, Sr, Ga, Sc, Gd, Sm, Ca, Ce, Nb, Mg, B, and Mo, 5≤p≤7, and 0≤q≤0.5. Dispersibility and workability of the positive electrode additive in the positive electrode slurry are improved. Side reactions that may be generated in the preparation of the positive electrode slurry can be suppressed while minimizing the loss of the positive electrode additive, so that the electrical properties of the electrodes manufactured using the same are improved.-
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.
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4.发明公开公开(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.
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5.发明公开公开(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
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.
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Patent Agency Ranking
公开(公告)号：US20240030427A1
公开(公告)日：2024-01-25
申请号：US18025501
申请日：2022-05-06
Applicant: LG Energy Solution, Ltd.
Inventor： Eun Sil Kang , Sang Seung Oh , Hye Hyeon Kim , Chi Ho Jo , Tae Gu Yoo
CPC classification number: H01M4/525 , H01M4/505 , H01M4/623 , H01M4/625 , H01M4/0404 , H01M2004/028
Abstract: A positive electrode for a lithium secondary battery and a lithium secondary battery including the same, and a method of making the same are disclosed herein. In some embodiments, a positive electrode includes a current collector, a first mixture layer, and a second mixture layer that are sequentially stacked, wherein the first mixture layer includes a first binder composed of a rubber-based resin, and wherein the second mixture layer includes a second binder composed of a fluorine-based resin derived from a fluorine (F)-containing monomer. By using a first binder exhibiting more hydrophobicity than a second binder adhesive strength between a positive electrode current collector and the mixture layer, and durability of the positive electrode, can be improved. When the first mixture layer contains a positive electrode additive, damage to the positive electrode can be minimized, and the electrical performance and lifetime of the lithium secondary battery can be improved.
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7.发明公开公开(公告)号：US20230343948A1
公开(公告)日：2023-10-26
申请号：US18023777
申请日：2022-05-06
Applicant: LG Energy Solution, Ltd.
Inventor： Su Min Lee , Sang Seung Oh , Hye Hyeon Kim , Chi Ho Jo
CPC classification number: H01M4/505 , H01M4/131 , H01M4/587 , H01M4/133 , H01M4/386 , H01M4/134 , H01M10/052 , H01M4/525
Abstract: An electrode assembly for a lithium secondary battery and a positive electrode for the lithium secondary battery including the electrode assembly. By controlling a ratio (CRLip/CRSi) between a content percentage of a positive electrode additive and a silicon (Si)-containing material that is a negative electrode active material, which are contained in a positive electrode mixture layer and a negative electrode mixture layer, respectively, to a specific range, the electrode assembly has an advantage in that high charging/discharging capacity and charging/discharging efficiency can be realized during initial charging/discharging, a capacity retention rate can be excellent during subsequent charging/discharging, and a lithium secondary battery including the electrode assembly can exhibit a high energy density and long lifetime.
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公开(公告)号：US20230335742A1
公开(公告)日：2023-10-19
申请号：US18026863
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
CPC classification number: H01M4/624 , H01M4/505 , H01M4/525 , H01M4/0404 , H01M50/46 , H01M4/366 , H01M2004/021
Abstract: A master batch for a positive electrode additive and a positive electrode slurry for a lithium secondary battery that contains the same, wherein the master batch contains a high content of irreversible additive together with a positive electrode active material so that a small amount of irreversible additive is dispersed in the positive electrode slurry with high dispersion without loss when a positive electrode is manufactured, and thus a positive electrode for a lithium secondary battery manufactured using the irreversible additive has high electrical properties and reliability, and a degree of freedom in design is improved when the positive electrode is manufactured.
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9.发明公开公开(公告)号：US20230327103A1
公开(公告)日：2023-10-12
申请号：US18025548
申请日：2022-04-05
Applicant: LG Energy Solution, Ltd.
Inventor： Sung Chul Lim , Sang Seung Oh , Hye Hyeon Kim , Chi Ho Jo , Tae Gu Yoo
IPC: H01M4/525 , H01M10/0525 , H01M4/36 , H01M4/505 , H01M4/62 , H01M4/583 , H01M4/38 , H01M10/42 , H01M10/44
CPC classification number: H01M4/525 , H01M10/0525 , H01M4/364 , H01M4/505 , H01M2004/028 , H01M4/583 , H01M4/386 , H01M10/4235 , H01M10/446 , H01M4/625
Abstract: Provided is a positive electrode for a lithium secondary battery and a lithium secondary battery including the same, and the positive electrode contains a positive electrode additive represented by Formula 1 and a positive electrode mixture layer including a region with a needle-shaped crack structure in its cross-section after initial charging (activation), so an amount of gas such as oxygen generated by an irreversible additive, which is a positive electrode additive, during the subsequent charging/discharging is reduced, and the migration path of lithium ions and/or electrons is able to be ensured. Therefore, an excellent effect of improving the battery safety and electrical performance of a lithium secondary battery is exhibited.
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10.发明公开公开(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
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.
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