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公开(公告)号：US20220310997A1
公开(公告)日：2022-09-29
申请号：US17512548
申请日：2021-10-27
发明人： Mi Jung NOH , Jik Soo KIM , Jae Ho CHOI , Tae Kyoung LEE , Sang Bok KIM , Sang Min PARK
IPC分类号： H01M4/525 , H01M10/0525 , H01M4/505 , C01G53/00
摘要： A cathode active material for a lithium secondary battery according to embodiments of the present invention has a high-nickel composition and includes a lithium-nickel composite metal oxide particle in which lithium, nickel and a metal having an oxidation number of +2 are combined in a predetermined range. A cation disorder caused when a nickel ion is present at a lithium-ion site is reduced to improve structural stability of the cathode active material. An initial capacity and a battery efficiency of a lithium secondary battery can be improved using the cathode active material.
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2.发明申请公开(公告)号：US20190221844A1
公开(公告)日：2019-07-18
申请号：US16250783
申请日：2019-01-17
发明人： Jik Soo KIM , Mi Jung NOH , Kook Hyun HAN
IPC分类号： H01M4/505 , H01M4/1391 , H01M4/04 , H01M4/525 , H01M10/0525 , H01M10/058 , B08B3/08 , C01G53/00
CPC分类号： H01M4/505 , B08B3/08 , C01G53/42 , C01G53/50 , C01P2002/01 , C01P2002/52 , C01P2002/54 , C01P2004/04 , C01P2006/40 , H01M4/0404 , H01M4/1391 , H01M4/525 , H01M10/0525 , H01M10/058 , H01M2004/028
摘要： In a method of preparing a lithium metal oxide, a preliminary lithium metal oxide is prepared. The preliminary lithium metal oxide is washed using a washing solution to remove lithium salt impurities. The washing solution includes water and an organic ligand multimer compound. The lithium metal oxide having improved structural uniformity and stability is obtained using the washing solution.
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3.发明申请公开(公告)号：US20220376234A1
公开(公告)日：2022-11-24
申请号：US17864956
申请日：2022-07-14
发明人： Sang Bok KIM , Jik Soo KIM , Hyo Shin KWAK , Myoung Lae KIM
摘要： A cathode active material for a lithium secondary battery includes a lithium metal oxide particle, and an organic poly-phosphate or an organic poly-phosphonate formed on at least portion of a surface of the lithium metal oxide particle. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the organic poly-phosphate or the organic poly-phosphonate.
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公开(公告)号：US20220077458A1
公开(公告)日：2022-03-10
申请号：US17464882
申请日：2021-09-02
发明人： Sung Soon PARK , Jik Soo KIM , Ji Hoon CHOI
IPC分类号： H01M4/36 , H01M4/505 , H01M4/525 , H01M4/485 , H01M10/0525
摘要： A cathode active material for a lithium secondary battery according to embodiments of the present invention includes a lithium composite oxide containing sodium, and a coating formed on the surface of the lithium composite oxide. The coating contains sodium and aluminum. Sodium is distributed to a depth of 35 nm or more from a surface of the cathode active material. Thus, electrical and thermal properties of a lithium secondary battery are improved.
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公开(公告)号：US20210280856A1
公开(公告)日：2021-09-09
申请号：US17326461
申请日：2021-05-21
发明人： Mi Jung NOH , Jik Soo KIM , Sang Bok KIM , Ji Hoon CHOI , Kook Hyun HAN
IPC分类号： H01M4/36 , C01G53/00 , H01M4/485 , H01M4/525 , H01M10/0525
摘要： A cathode active material for a lithium secondary battery includes a lithium-aluminum-titanium oxide formed on a surface of a lithium metal oxide particle having a specific formula. The cathode active material may have an improved structural stability even in a high temperature condition.
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6.发明公开公开(公告)号：US20230197934A1
公开(公告)日：2023-06-22
申请号：US18173789
申请日：2023-02-24
发明人： Sang Bok KIM , Sang Hye SHIN , Sang Min PARK , Tae Kyoung LEE , Myoung Lae KIM , Jeong Bae YOON , Jik Soo KIM , Ji Hoon CHOI
CPC分类号： H01M4/364 , H01M4/60 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/028
摘要： The cathode active material for a lithium secondary battery according to embodiments of the present invention includes a lithium-transition metal composite oxide particle including a plurality of primary particles, and the lithium-transition metal composite oxide particle includes a lithium-sulfur-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by preventing the layer structure deformation of the primary particles and removing residual lithium.
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7.发明申请公开(公告)号：US20210408532A1
公开(公告)日：2021-12-30
申请号：US17475058
申请日：2021-09-14
发明人： Jik Soo KIM , Sang Bok KIM , Hyo Shin KWAK , Myoung Lae KIM , Se Rah MOON , Jin Seok SEO , Mi Jung NOH , Duck Chul HWANG
IPC分类号： H01M4/36 , H01M4/525 , H01M10/0525 , B08B3/08 , H01M4/62 , C07C335/40 , C07C333/04 , C07D295/14 , C07D277/36 , C07F1/00 , C07F9/00 , C07C333/10
摘要： A cathode active material for a lithium secondary battery includes a lithium metal oxide particle and a thio-based compound formed on at least portion of a surface of the lithium metal oxide particle. The thio-based compound has a double bond that contains a sulfur atom. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the thio-based compound.
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公开(公告)号：US20210098787A1
公开(公告)日：2021-04-01
申请号：US17041959
申请日：2019-03-28
发明人： Mi Jung NOH , Jik Soo KIM , Sang Bok KIM , Dong Wook HA
IPC分类号： H01M4/525 , H01M10/0525 , H01M4/505 , C01G53/00
摘要： A cathode active material precursor according to embodiments of the present invention includes nickel (Ni) and cobalt (Co) and includes an excess amount of Ni. A101/A001 is 1 or more and I101/I001 is 1 or more. A101 is a peak area of (101) plane, and A001 is a peak area of (001) plane by an X-ray diffraction (XRD) analysis, and I101 is a peak intensity of (101) plane, and I001 is a peak intensity of (001) plane by the XRD analysis. A cathode and a lithium secondary battery having improved crystallinity and long-term stability using the cathode active material precursor.
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9.发明申请公开(公告)号：US20190393489A1
公开(公告)日：2019-12-26
申请号：US16399407
申请日：2019-04-30
发明人： Mi Jung NOH , Jik Soo KIM , Sang Bok KIM , Ji Hoon CHOI , Kook Hyun HAN
IPC分类号： H01M4/36 , H01M4/525 , H01M4/485 , H01M10/0525 , C01G53/00
摘要： A cathode active material for a lithium secondary battery includes a lithium-aluminum-titanium oxide formed on a surface of a lithium metal oxide particle having a specific formula. The cathode active material may have an improved structural stability even in a high temperature condition.
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10.发明申请公开(公告)号：US20200168911A1
公开(公告)日：2020-05-28
申请号：US16692895
申请日：2019-11-22
发明人： Sang Bok KIM , Jik Soo KIM , Hyo Shin KWAK , Myoung Lae KIM
摘要： A cathode active material for a lithium secondary battery includes a lithium metal oxide particle, and an organic poly-phosphate or an organic poly-phosphonate formed on at least portion of a surface of the lithium metal oxide particle. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the organic poly-phosphate or the organic poly-phosphonate.
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