-
公开(公告)号：US20250070156A1
公开(公告)日：2025-02-27
申请号：US18945076
申请日：2024-11-12
Applicant: LG Energy Solution, Ltd.
Inventor： Eun Sol Lho , Jin Tae Hwang , Su Yeon Oh , Byun Chun Park , Sang Min Park , Sang Wook Lee , Seul Ki Kim , Hyeong Il Kim
IPC: H01M4/525 , H01M4/02 , H01M4/36 , H01M4/485 , H01M10/052
Abstract: A positive electrode active material includes a nickel-based lithium composite metal oxide having a Ni content of 80 atm % or greater among transition metals except lithium, and in the form of a single particle or pseudo-single particle. The nickel-based lithium composite metal oxide has a coating layer positioned on the surface thereof, wherein the coating layer contains cobalt. The positive electrode active material also satisfies [Equation 1] 1≤XY/Z≤3, wherein X is the molar number (mol %) of Co in the coating layer based on 100 moles of the nickel-based lithium composite metal oxide, Y is the average particle diameter (μm) of nodules of the nickel-based lithium composite metal oxide, and Z is D50 (μm) of the positive electrode active material, wherein Z is from 5 μm to 12 μm.
-
公开(公告)号：US20240258499A1
公开(公告)日：2024-08-01
申请号：US18443588
申请日：2024-02-16
Applicant: LG Energy Solution, Ltd.
Inventor： Sung Bin Park , Dong Hun Lee , Hyung Man Cho , Jung Min Han , Jin Tae Hwang , Wang Mo Jung
IPC: H01M4/131 , H01M4/02 , H01M4/04 , H01M4/134 , H01M4/1391 , H01M4/1395 , H01M4/36 , H01M4/505 , H01M4/525 , H01M10/0525
CPC classification number: H01M4/131 , H01M4/0471 , H01M4/134 , H01M4/1391 , H01M4/1395 , H01M4/364 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/028
Abstract: A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), and at least one particle growth-promoting element selected from the group consisting of strontium (Sr), zirconium (Zr), magnesium (Mg), yttrium (Y), and aluminum (Al). The lithium composite transition metal oxide includes the nickel (Ni) in an amount of 65 mol % or more and the manganese (Mn) in an amount of 5 mol % or more based on a total amount of transition metals, and the positive active material has a single particle.
-
公开(公告)号：US12040473B2
公开(公告)日：2024-07-16
申请号：US17311914
申请日：2019-12-06
Applicant: LG Energy Solution, Ltd.
Inventor： Sung Bin Park , Dong Hun Lee , Hyung Man Cho , Jung Min Han , Jin Tae Hwang , Wang Mo Jung
IPC: H01M4/04 , C23C16/40 , H01M4/131 , H01M4/1391 , H01M4/505 , H01M4/525 , H01M10/0525 , C23C16/455 , H01M4/02
CPC classification number: H01M4/0428 , C23C16/403 , C23C16/405 , H01M4/0404 , H01M4/131 , H01M4/1391 , H01M4/505 , H01M4/525 , H01M10/0525 , C23C16/45525 , H01M2004/021 , H01M2004/028 , H01M2220/20
Abstract: The present disclosure provides a method for manufacturing a positive electrode for a secondary battery, the method including forming a positive electrode mixture layer including a positive electrode active material on a positive electrode current collector, and forming a metal oxide coating layer on the positive electrode mixture layer by atomic layer deposition, wherein the positive electrode active material includes lithium composite transition metal oxide particles and a boron-containing coating layer formed on the lithium composite transition metal oxide particles, and the lithium composite transition metal oxide particles include nickel (Ni), cobalt (Co), and manganese (Mn), wherein the nickel (Ni) is 60 mol % or greater of all metals excluding lithium.
-
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.
-
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.
-
Patent Agency Ranking
公开(公告)号：US11993846B2
公开(公告)日：2024-05-28
申请号：US17781925
申请日：2021-01-12
Applicant: LG Energy Solution, Ltd.
Inventor： Seul Ki Chae , Dae Jin Lee , Dong Hwi Kim , Jin Tae Hwang , Hyeong Il Kim , Wang Mo Jung , Dong Hun Lee
CPC classification number: C23C16/45555 , H01M4/0428 , H01M4/366 , H01M4/505 , H01M4/525 , H01M2004/028
Abstract: A method of preparing a positive electrode active material for a secondary battery includes preparing a lithium composite transition metal oxide which includes nickel, cobalt, and manganese and contains 60 mol % or more of the nickel among all metals except lithium, adding a moisture absorbent and the lithium composite transition metal oxide into an atomic layer deposition (ALD) reactor, and adding a coating metal precursor into the atomic layer deposition (ALD) reactor and forming a metal oxide coating layer on surfaces of particles of the lithium composite transition metal oxide by atomic layer deposition (ALD).
-
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.
-
8.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.
-
9.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.
-
10.发明公开公开(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.
-
-
-
-
-
-
-
-
-
Search Results
23
records
(took 0.018 seconds)
