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公开(公告)号：US20240234720A1
公开(公告)日：2024-07-11
申请号：US18615093
申请日：2024-03-25
Applicant: LG Energy Solution, Ltd.
Inventor： Sang Min Park , Ji Hye Kim , Tae Gu Yoo , Wang Mo Jung , Gi Beom Han
CPC classification number: H01M4/525 , C01G53/50 , H01M4/0471 , H01M4/505 , H01M10/0525 , H01M2004/021 , H01M2004/028
Abstract: A lithium composite transition metal oxide includes nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium composite transition metal oxide includes two or more elements selected from the group consisting of Zr, Al, V, Co, and Mg and additional two or more elements selected from the group consisting of Ti, Y, Sr, Nb, Ba, and Ca, and the lithium composite transition metal oxide is in a form of a particle having a crystallite size of 170-300 nm.
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2.发明公开公开(公告)号：US20240234719A1
公开(公告)日：2024-07-11
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: H01M4/525 , C01G53/00 , H01M4/02 , 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 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.
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3.发明授权公开(公告)号：US11967714B2
公开(公告)日：2024-04-23
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
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.
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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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公开(公告)号：US11876210B2
公开(公告)日：2024-01-16
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 , H01M4/02
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.
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Patent Agency Ranking
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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7.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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公开(公告)号：US20220344643A1
公开(公告)日：2022-10-27
申请号：US17762234
申请日：2020-10-13
Applicant: LG Energy Solution, Ltd.
Inventor： Min Kwak , Tae Gon Kim , Tae Gu Yoo , Sin Young Park , Bo Ram Lee
Abstract: A method for producing a positive electrode active material includes preparing a lithium transition metal oxide in the form of a secondary particle in which primary particles are aggregated, mixing the lithium transition metal oxide and a carbon-based material of a hollow structure having a plurality of pores to form a mixture, and surface treating the mixture in a mechanical manner to form a carbon coating layer on the surface of the lithium transition metal oxide, wherein the carbon-based material of a hollow structure having a plurality of pores has a specific surface area of 200 m2/g or greater and a graphitization degree(ID/IG) of 0.5 or greater.
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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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公开(公告)号：US20240059581A1
公开(公告)日：2024-02-22
申请号：US18269719
申请日：2022-05-10
Applicant: LG Energy Solution, Ltd.
Inventor： Tae Gu Yoo , Boram Lee , Hae Jung Jung , Wang Mo Jung , Byungchun Park
IPC: C01G53/00
CPC classification number: C01G53/42 , C01P2002/54 , C01P2006/40
Abstract: An additive for a positive electrode of a lithium secondary battery comprising a lithium transition metal oxide, Li3PO4 and Li5AlO4. The lithium transition metal oxide is doped with aluminum. The additive comprising Li3PO4 and Li5AlO4 together with the lithium transition metal oxide has a function of improving battery stability when applied to a positive electrode of a lithium secondary battery. Specifically, when a general lithium transition metal oxide is applied to the positive electrode of a lithium secondary battery, it may cause a side reaction with the electrolyte solution to generate gas in the battery, which may cause a problem with poor stability. However, Li3PO4 and Li5AlO4 are uniformly mixed with the lithium transition metal oxide or partially form a coating layer, and some aluminum is doped into the lithium transition metal oxide to inhibit the lithium transition metal oxide from causing side reactions with the electrolyte solution.
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