公开(公告)号：US11532815B2

公开(公告)日：2022-12-20

申请号：US17476673

申请日：2021-09-16

申请人： LG Chem, Ltd.

发明人： Ji Hye Kim ,  Byung Chun Park ,  So Ra Baek ,  Tae Gu Yoo ,  Wang Mo Jung

IPC分类号： H01M4/525 ,  H01M4/131 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  C01B25/45 ,  C01G53/00 ,  H01M10/052 ,  H01M4/02 ,  H01M4/86

摘要： The present invention relates to a positive electrode active material for a lithium secondary battery which includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein a portion of nickel (Ni) sites of the lithium composite transition metal oxide is substituted with tungsten (W), and an amount of a lithium tungsten oxide remaining on surfaces of lithium composite transition metal oxide particles is 1,000 ppm or less.

公开(公告)号：US20220006085A1

公开(公告)日：2022-01-06

申请号：US17476673

申请日：2021-09-16

申请人： LG Chem, Ltd.

发明人： Ji Hye Kim ,  Byung Chun Park ,  So Ra Baek ,  Tae Gu Yoo ,  Wang Mo Jung

IPC分类号： H01M4/525 ,  C01B25/45 ,  C01G53/00 ,  H01M4/131 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M10/052

摘要： The present invention relates to a positive electrode active material for a lithium secondary battery which includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein a portion of nickel (Ni) sites of the lithium composite transition metal oxide is substituted with tungsten (W), and an amount of a lithium tungsten oxide remaining on surfaces of lithium composite transition metal oxide particles is 1,000 ppm or less.

公开(公告)号：US20190288285A1

公开(公告)日：2019-09-19

申请号：US16347742

申请日：2018-02-28

申请人： LG Chem, Ltd.

发明人： Ji Hye Kim ,  Byung Chun Park ,  So Ra Baek ,  Tae Gu Yoo ,  Wang Mo Jung

IPC分类号： H01M4/525 ,  C01G53/00 ,  C01B25/45 ,  H01M10/052 ,  H01M4/131 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505

摘要： The present invention relates to a positive electrode active material for a lithium secondary battery which includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein a portion of nickel (Ni) sites of the lithium composite transition metal oxide is substituted with tungsten (W), and an amount of a lithium tungsten oxide remaining on surfaces of lithium composite transition metal oxide particles is 1,000 ppm or less.

公开(公告)号：US11299401B2

公开(公告)日：2022-04-12

申请号：US16316554

申请日：2017-12-19

申请人： LG Chem, Ltd.

发明人： Ji Hye Kim ,  Byung Chun Park ,  So Ra Baek ,  Tae Gu Yoo ,  Wang Mo Jung

IPC分类号： H01M4/131 ,  H01M4/525 ,  H01M4/1391 ,  C01G53/00 ,  H01M4/36 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/02

摘要： The present invention provides a positive electrode active material for a secondary battery, which includes a lithium transition metal oxide including nickel (Ni) and cobalt (Co), and at least one selected from the group consisting of aluminum (Al), manganese (Mn), and a combination thereof. The lithium transition metal oxide is characterized in that the content of nickel (Ni) in the total transition metal elements is 80 mol % or more, and the cation mixing ratio of Ni cations in a lithium layer in the lithium transition metal oxide structure is 1.1% or less.

公开(公告)号：US11101462B2

公开(公告)日：2021-08-24

申请号：US15754111

申请日：2016-11-25

申请人： LG Chem, Ltd.

发明人： Chi Ho Jo ,  Sin Young Park ,  Wang Mo Jung ,  Byung Chun Park ,  So Ra Baek

IPC分类号： H01M4/525 ,  H01M4/131 ,  C01G53/00 ,  H01M4/36 ,  H01M4/02 ,  H01M10/0525 ,  H01M10/052

摘要： The present invention provides a positive electrode active material for a secondary battery, a positive electrode for a secondary battery, and a secondary battery including the same, the positive electrode active material including a first lithium-nickel oxide particle having an average particle size (D50) of more than 8 μm to 20 μm or less, and a second lithium-nickel oxide particle having an average particle size (D50) of 8 μm or less, wherein the first lithium-nickel oxide particle has a particle strength of 100 MPa to 250 MPa, the second lithium-nickel oxide particle has a particle strength of 50 MPa to 100 MPa, a ratio r of the strength of the first lithium-nickel oxide particle to the strength of the second lithium-nickel oxide particle satisfies Equation 1 set forth herein.

公开(公告)号：US20210305566A1

公开(公告)日：2021-09-30

申请号：US17263383

申请日：2020-01-31

申请人： LG Chem, Ltd.

发明人： So Ra Baek ,  Eun Sol Lho ,  Wang Mo Jung ,  Sang Wook Lee ,  Eun Jo

IPC分类号： H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  C01G53/00

摘要： A positive electrode active material for a secondary battery which includes a nickel-based lithium composite transition metal oxide including nickel (Ni), wherein the lithium composite transition metal oxide satisfies Equation 1 and Equation 2 below 80 nm≤crystallite sizeFWHM≤150 nm   [Equation 1] Δ size(|crystallite sizeIB−crystallite sizeFWHM|)≤20   [Equation 2] wherein, in Equation 1 and Equation 2, crystallite sizeFWHM is a crystallite size obtained by calculating from X-ray diffraction (XRD) data using a full width at half maximum (FWHM) method, and crystallite sizeIB is a crystallite size obtained by calculating from XRD data using an integral breadth (IB) method.

公开(公告)号：US20210151754A1

公开(公告)日：2021-05-20

申请号：US16771139

申请日：2019-01-23

申请人： LG Chem, Ltd.

发明人： So Ra Baek ,  Min Suk Kang ,  Sang Wook Lee ,  Wang Mo Jung ,  Dong Hun Lee ,  Hye Lim Jeon ,  Eun Sol Lho

IPC分类号： H01M4/525 ,  H01M4/505 ,  H01M4/36 ,  H01M4/04 ,  H01M10/0525

摘要： 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 a glassy coating layer formed on surfaces of particles of the lithium composite transition metal oxide, wherein, in the lithium composite transition metal oxide, an amount of the nickel (Ni) in a total amount of transition metals is 60 mol % or more, and an amount of the manganese (Mn) is greater than an amount of the cobalt (Co), and the glassy coating layer includes a glassy compound represented by Formula 1. LiaM1bOc  [Formula 1] wherein, M1 is at least one selected from the group consisting of boron (B), aluminum (Al), silicon (Si), titanium (Ti), and phosphorus (P), and 1≤a≤4, 1≤b≤8, and 1≤c≤20.

公开(公告)号：US20200083524A1

公开(公告)日：2020-03-12

申请号：US16611126

申请日：2018-11-06

申请人： LG Chem, Ltd.

发明人： So Ra Baek ,  Wang Mo Jung ,  Min Suk Kang ,  Sang Wook Lee ,  Eun Sol Lho ,  Wen Xiu Wang

IPC分类号： H01M4/1315 ,  H01M10/0525 ,  C01G51/00 ,  H01M4/525

摘要： The present disclosure relates to a positive electrode material including a spinel-structured lithium manganese-based first positive electrode active material and a lithium nickel-manganese-cobalt-based second positive electrode active material, wherein the first positive electrode active material includes a lithium manganese oxide represented by Formula 1 and a coating layer which is disposed on a surface of the lithium manganese oxide, the second positive electrode active material is represented by Formula 2, and an average particle diameter of the second positive electrode active material is greater than an average particle diameter of the first positive electrode active material, and a positive electrode and a lithium secondary battery which include the positive electrode material: Li1+aMn2-bM1bO4-cAc  [Formula 1] Li1+x[NiyCozMnwM2v]O2-pBp  [Formula 2]

公开(公告)号：US20190165362A1

公开(公告)日：2019-05-30

申请号：US16320859

申请日：2018-02-02

申请人： LG Chem, Ltd.

发明人： So Ra Baek ,  Ji Hye Kim ,  Tae Gu Yoo ,  Wang Mo Jung ,  Byung Chun Park

IPC分类号： H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/1391 ,  H01M10/052 ,  H01M4/62

摘要： The present invention relates to a positive electrode active material for a secondary battery, which includes a core including a lithium composite metal oxide, and a surface treatment layer which is disposed on the core and includes an amorphous oxide containing a lithium (Li) oxide, a boron (B) oxide, and an aluminum (Al) oxide, wherein an amount of a lithium by-product present on a surface of the positive electrode active material is less than 0.55 wt % based on a total weight of the positive electrode active material, and a method of preparing the same.

公开(公告)号：US20180241036A1

公开(公告)日：2018-08-23

申请号：US15754111

申请日：2016-11-25

申请人： LG Chem, Ltd.

发明人： Chi Ho Jo ,  Sin Young Park ,  Wang Mo Jung ,  Byung Chun Park ,  So Ra Baek

IPC分类号： H01M4/525 ,  H01M4/131 ,  H01M10/0525

CPC分类号： H01M4/525 ,  C01G53/50 ,  C01P2002/54 ,  C01P2004/61 ,  C01P2004/82 ,  C01P2006/11 ,  H01M4/131 ,  H01M4/362 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

摘要： The present invention provides a positive electrode active material for a secondary battery, a positive electrode for a secondary battery, and a secondary battery including the same, the positive electrode active material including a first lithium-nickel oxide particle having an average particle size (D50) of more than 8 μm to 20 μm or less, and a second lithium-nickel oxide particle having an average particle size (D50) of 8 μm or less, wherein the first lithium-nickel oxide particle has a particle strength of 100 MPa to 250 MPa, the second lithium-nickel oxide particle has a particle strength of 50 MPa to 100 MPa, a ratio r of the strength of the first lithium-nickel oxide particle to the strength of the second lithium-nickel oxide particle satisfies Equation 1 set forth herein.