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公开(公告)号：US20220158192A1
公开(公告)日：2022-05-19
申请号：US17435820
申请日：2020-03-09
发明人： Tae Gon Kim , Ki Won Sung , Wang Mo Jung , Sin Young Park , Dae Jin Lee , Bo Ram Lee , Hak Yoon Kim
摘要： A negative electrode includes a negative electrode active material layer, wherein the negative electrode active material layer includes a negative electrode active material and a conductive material. The negative electrode active material includes SiOx (0≤x
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公开(公告)号：US20220140340A1
公开(公告)日：2022-05-05
申请号：US17433863
申请日：2020-03-06
发明人： Tae Gon Kim , Wang Mo Jung , Kwang Woo Yoon , Seung Yong Son , Byung Joon Chae , Sin Young Park , Se Hui Sohn , Dae Jin Lee , Bo Ram Lee , Hak Yoon Kim , Seul Ki Kim , Jin Young Hwang
IPC分类号： H01M4/583 , C01B32/162
摘要： The present invention relates to a carbon nanotube having an La(100) of less than 7.0 nm when measured by XRD and a specific surface area of 100 m2/g to 196 m2/g, and an electrode and a secondary battery including the carbon nanotube.
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13.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
发明人： Jin Tae Hwang , Wang Mo Jung , Chi Ho Jo , Tae Gu Yoo , Hae Jung Jung , Jong Wook Heo , Hyeon Jin Cho
CPC分类号： C01G53/50 , H01M10/0427 , C01P2002/01 , C01P2004/04 , C01P2004/61 , C01P2004/62 , C01P2004/84 , C01P2006/40
摘要： 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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公开(公告)号：US20240282928A1
公开(公告)日：2024-08-22
申请号：US18561009
申请日：2022-09-19
发明人： Hae Jung Jung , Wang Mo Jung , Chi Ho Jo , Tae Gu Yoo , Jin Tae HWANG , Jong Wook Heo , Hyeon Jin Cho
CPC分类号： H01M4/366 , H01M4/525 , H01M4/62 , H01M2004/021 , H01M2004/028
摘要： 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：US12046750B2
公开(公告)日：2024-07-23
申请号：US17294923
申请日：2019-11-28
发明人： Eun Sol Lho , Wang Mo Jung , Min Suk Kang , Sang Wook Lee , So Ra Baek , Wen Xiu Wang
IPC分类号： H01M4/525 , C01G53/00 , H01M4/505 , H01M10/0525 , H01M4/02
CPC分类号： H01M4/525 , C01G53/50 , H01M4/505 , H01M10/0525 , H01M2004/021 , H01M2004/028
摘要： The present disclosure relates to a positive electrode active material for a secondary battery, the positive electrode active material being a lithium composite transition metal oxide particle including nickel (Ni) and cobalt (Co) and including at least one of manganese (Mn) and aluminum (Al), wherein the lithium composite transition metal oxide particle includes 60 mol % or greater of the nickel (Ni) in all metals excluding lithium, a doping element is doped on the lithium composite transition metal oxide particle, and the particle intensity of the lithium composite transition metal oxide particle is 210 MPa to 290 MPa.
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16.发明公开公开(公告)号：US20240030414A1
公开(公告)日：2024-01-25
申请号：US18265560
申请日：2021-12-07
发明人： Seulki Chae , Hakyoon Kim , Sora Baek , Hyuck Hur , Dong Hwi Kim , Hyeongil Kim , Wang Mo Jung , Donghun Lee
CPC分类号： H01M4/366 , H01M4/48 , H01M10/052 , H01M4/131 , H01M4/525 , H01M4/505 , C01G53/006 , H01M2004/028
摘要： Disclosed is a positive electrode material for a lithium secondary battery capable of improving the problems of resistance and lifetime deterioration of the battery by forming a thin and uniform metal oxide on the surface of the lithium nickel cobalt manganese-based positive electrode active material, and a method for preparing the same and a lithium secondary battery comprising the same. The method of preparing the positive electrode material for the lithium secondary battery comprises a method of coating a metal oxide on the surface of a lithium nickel cobalt manganese-based positive electrode active material through a chemical vapor deposition. The method includes placing the lithium nickel cobalt manganese-based positive electrode active material in a deposition apparatus and supplying a metal oxide precursor and a carrier gas, and the lithium nickel cobalt manganese-based positive electrode active material is stirred during deposition.
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17.发明公开公开(公告)号：US20240021788A1
公开(公告)日：2024-01-18
申请号：US18038515
申请日：2021-12-17
发明人： So Ra Baek , Hak Yoon Kim , Hyuck Hur , Dong Hwi Kim , Hyeong Il Kim , Seul Ki Chae , Wang Mo Jung , Dong Hun Lee
CPC分类号： H01M4/364 , H01M4/505 , H01M4/525 , C01G53/50 , H01M2004/028
摘要： A bimodal positive electrode active material includes a first lithium transition metal oxide and a second lithium transition metal oxide having an average particle diameter (D50) smaller than that of the first lithium transition metal oxide, wherein the first lithium transition metal oxide has higher particle strength and smaller crystalline size than the second lithium transition metal oxide, and a positive electrode and a lithium secondary battery which include the positive electrode active material. A positive electrode active material may improve high-temperature life characteristics and high-temperature storage characteristics of a lithium secondary battery. 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：US20240014399A1
公开(公告)日：2024-01-11
申请号：US18022834
申请日：2021-11-18
发明人： Hae Jung Jung , Boram Lee , Tae Gu Yoo , Wang Mo Jung , Byungchun Park
CPC分类号： H01M4/628 , H01M4/131 , H01M2004/028
摘要： 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.
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19.发明公开公开(公告)号：US20230420669A1
公开(公告)日：2023-12-28
申请号：US18038923
申请日：2021-11-30
发明人： Sang Wook Lee , Dae Jin Lee , Sang Min Park , Min Kwak , Wang Mo Jung , Gi Beom Han , Eun Sol Lho , Joong Yeop Do , Kang Joon Park
IPC分类号： H01M4/525 , H01M4/505 , H01M10/052
CPC分类号： H01M4/525 , H01M4/505 , H01M10/052 , H01M2004/028
摘要： The present invention relates to a positive electrode active material having low nickel disorder and high particle strength in a crystal structure, and capable of implementing a battery having excellent capacity properties and capacity retention, and a positive electrode and a lithium secondary battery including the same, wherein the positive electrode active material includes a large-diameter lithium transition metal oxide and a small-diameter lithium transition metal oxide whose average particle diameter (D50) is smaller than that of the large-diameter lithium transition metal oxide, wherein the large-diameter lithium transition metal oxide and the small-diameter lithium transition metal oxide each independently have a composition represented by Formula 1, and has a crystal grain size of 100 nm to 150 nm, wherein the difference in crystal grain size between the large-diameter lithium transition metal oxide and the small-diameter lithium transition metal oxide is less than 40 nm, and the positive electrode active material has a nickel disorder (Ni-disorder) of 1.5% or less.
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20.发明公开公开(公告)号：US20230402597A1
公开(公告)日：2023-12-14
申请号：US18034991
申请日：2021-12-24
发明人： Hyeong II Kim , Hak Yoon Kim , So Ra Baek , Hyuck Hur , Dong Hwi Kim , Seul Ki Chae , Wang Mo Jung , Dong Hun Lee
IPC分类号： H01M4/525 , H01M10/052 , H01M4/505 , H01M4/36 , H01M4/62
CPC分类号： H01M4/525 , H01M10/052 , H01M2004/028 , H01M4/364 , H01M4/625 , H01M4/505
摘要： A positive electrode for a lithium secondary battery includes a positive electrode active material layer including: a first positive electrode active material represented by Formula 1 and having a crystalline size of 150 nm or more; a conductive agent including single-walled carbon nanotubes (SWCNTs); and a binder. A lithium secondary battery includes the positive electrode.
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