-
公开(公告)号：US20230416111A1
公开(公告)日：2023-12-28
申请号：US18464921
申请日：2023-09-11
发明人： Jinhwa KIM , Minhan KIM , Donggyu CHANG , Jihyun SEOG , Yuntaek OH , Jungwoo SON
CPC分类号： C01G53/42 , C01G53/006 , H01M4/525 , C01P2002/72 , C01P2002/85 , C01P2004/03 , C01P2006/12 , C01P2006/40 , C01P2004/45 , C01P2004/10 , C01P2004/04 , C01P2002/78 , H01M2004/028
摘要： A method of preparing a positive active material involves mixing a nickel compound, a cobalt compound, and optionally a metal compound to obtain a first mixture, subjecting the first mixture to a co-precipitation reaction to obtain a first resulting product, washing with water, filtering and drying the first resulting product to prepare a transition metal hydroxide precursor, subjecting the transition metal hydroxide precursor to a primary heat treatment to prepare a transition metal composite oxide precursor, mixing the transition metal composite oxide precursor and a dehydrated lithium salt to obtain a second mixture, and performing a secondary heat treatment on the second mixture to prepare a nickel-based lithium transition metal oxide. The dehydrated lithium salt is prepared by drying a hydrated lithium salt having an average particle diameter (D50) of about 400-600 μm and then pulverizing the resultant to have a D50 of about 3-30 μm.
-
2.发明申请公开(公告)号：US20180151865A1
公开(公告)日：2018-05-31
申请号：US15824829
申请日：2017-11-28
发明人： Yumi SONG , Seonyoung KWON , Kihyun KIM , Soohyeon KIM , Jinhwa KIM , Joongho MOON , Jaeho LEE , Kwanghwan CHO , Soonbong CHOI , Mingzi HONG
IPC分类号： H01M4/131 , H01M4/133 , H01M4/66 , H01M10/0525
CPC分类号： H01M4/131 , C01B32/22 , H01M4/133 , H01M4/366 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/665 , H01M10/052 , H01M10/0525 , H01M2004/028 , Y02T10/7011
摘要： A composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode are provided. The composite cathode active material includes a core including a lithium metal oxide and a coating layer on the core, wherein the lithium metal oxide includes two or more transition metals including nickel (Ni), an amount of Ni within one mole of the two or more transition metals included in the lithium metal oxide is about 0.65 mol or greater, the coating layer includes LiF, and a resistance of the composite cathode active material is lower than that of the core.
-
公开(公告)号：US20210020936A1
公开(公告)日：2021-01-21
申请号：US17039739
申请日：2020-09-30
发明人： Jinhwa KIM , Hyunbeom KIM , Jongmin KIM , Wooyoung YANG , Donggyu CHANG , Jangsuk HYUN
IPC分类号： H01M4/525 , H01M10/052 , H01M4/04 , C01G53/00
摘要： Provided are a nickel-based active material for a lithium secondary battery, a method of preparing the nickel-based active material, and a lithium secondary battery including a positive electrode including the nickel-based active material. The nickel-based active material includes at least one secondary particle that includes at least two primary particle structures, the primary particle structures each including a porous inner portion and an outer portion having a radially arranged structure, and the secondary particle including at least two radial centers.
-
4.发明申请公开(公告)号：US20200343552A1
公开(公告)日：2020-10-29
申请号：US16958896
申请日：2019-01-23
发明人： Jinhwa KIM , Jongmin KIM , Wooyoung YANG , Kwanghwan CHO
IPC分类号： H01M4/525 , H01M10/0525 , H01M4/505
摘要： Provided are a cathode active material for a lithium secondary battery, and a cathode and a lithium secondary battery including the same, the cathode active material including secondary particles including an aggregate of two or more primary particles, and a primary particle coefficient is greater than or equal to 30 μm−1 and a total circumferential length of the primary particles is greater than or equal to 220 μm.
-
公开(公告)号：US20180026267A1
公开(公告)日：2018-01-25
申请号：US15654623
申请日：2017-07-19
发明人： Jongmin KIM , Jiyoon KIM , Pilsang YUN , Donggyu CHANG , Kwanghwan CHO , Jangsuk HYUN , Jinhwa KIM
IPC分类号： H01M4/525 , H01M4/485 , H01M10/052
CPC分类号： H01M4/525 , C01G53/50 , C01P2002/72 , C01P2002/85 , C01P2004/03 , C01P2004/50 , C01P2004/90 , C01P2006/12 , C01P2006/16 , C01P2006/40 , H01M4/485 , H01M10/052 , H01M2004/021 , H01M2004/028
摘要： A nickel-based active material for a lithium secondary battery, a method of preparing the nickel-based active material, and a lithium secondary battery including a positive electrode including the nickel-based active material, the nickel-based active material comprising a secondary particle having an outer portion with a radially arranged structure and an inner portion with an irregular porous structure, wherein the inner portion of the secondary particle has a larger pore size than the outer portion of the secondary particle.
-
6.发明公开公开(公告)号：US20240213465A1
公开(公告)日：2024-06-27
申请号：US18366545
申请日：2023-08-07
发明人： Jinhwa KIM , Minhan KIM , Jihyun SEOG , Youngjoo CHAE , Soonrewl LEE , Wooyoung YANG , Ickkyu CHOI , Jongmin KIM , Jongsan IM
IPC分类号： H01M4/525 , C01G53/00 , H01M4/02 , H01M4/36 , H01M4/505 , H01M4/88 , H01M10/0525 , H01M10/44
CPC分类号： H01M4/525 , C01G53/50 , H01M4/362 , H01M4/505 , H01M4/8882 , H01M10/0525 , H01M10/44 , C01P2006/40 , H01M2004/028 , H01M2220/00
摘要： Disclosed are a positive active material for a rechargeable lithium battery, and a rechargeable lithium battery including the same. The positive active material for a rechargeable lithium battery includes a first positive active material including a secondary particle including lithium nickel-based composite oxide wherein in the secondary particle, a plurality of primary particles are aggregated and zirconium on the surface of the secondary particle, and a second positive active material including a single particle including lithium nickel-based composite oxide and zirconium on the surface of the single particle, wherein a ratio of a Zr content (at %) relative to all elements on the surface of the single particle of the second positive active material to a Zr content (at %) to all elements on the surface of the secondary particle of the first positive active material is about 1.5 to about 3.0.
-
公开(公告)号：US20210265628A1
公开(公告)日：2021-08-26
申请号：US17308940
申请日：2021-05-05
发明人： Jongmin KIM , Jiyoon KIM , Pilsang YUN , Donggyu CHANG , Kwanghwan CHO , Jangsuk HYUN , Jinhwa KIM
摘要： Provided are a nickel-based active material, a method of preparing the same, and a lithium secondary battery including a positive electrode including the nickel-based active material. The nickel-based active material includes at least one secondary particle including an aggregate of two or more primary particles, wherein at least a portion of the secondary particle has a radial array structure, and a hetero-element compound is positioned between the primary particles.
-
公开(公告)号：US20190173076A1
公开(公告)日：2019-06-06
申请号：US16209659
申请日：2018-12-04
发明人： Jongmin KIM , Jiyoon KIM , Jinhwa KIM
IPC分类号： H01M4/131 , H01M4/525 , H01M10/0525 , H01M4/1391 , H01M4/04 , H01M4/505
摘要： A positive active material for a rechargeable lithium battery includes a first positive active material including a secondary particle including at least two agglomerated primary particles, where at least one part of the primary particles has a radial arrangement structure, as well as a second positive active material having a monolith structure. The first and second positive active materials may both include nickel-based positive active materials. A method of preparing the positive active material, and a rechargeable lithium battery including a positive electrode including the positive active material are also provided.
-
公开(公告)号：US20180026268A1
公开(公告)日：2018-01-25
申请号：US15654648
申请日：2017-07-19
发明人： Jongmin KIM , Jiyoon KIM , Pilsang YUN , Donggyu CHANG , Kwanghwan CHO , Jangsuk HYUN , Jinhwa KIM
IPC分类号： H01M4/525 , H01M4/485 , H01M10/052
摘要： Provided are a nickel-based active material, a method of preparing the same, and a lithium secondary battery including a positive electrode including the nickel-based active material. The nickel-based active material includes at least one secondary particle including an aggregate of two or more primary particles, wherein at least a portion of the secondary particle has a radial array structure, and a hetero-element compound is positioned between the primary particles.
-
公开(公告)号：US20220384780A1
公开(公告)日：2022-12-01
申请号：US17657316
申请日：2022-03-30
发明人： Jungsue JANG , Donghyun KIL , Minhan KIM , Jinyoung KIM , Jinhwa KIM , Jihyun SEOG , Jaeha SHIM , Kiyong AHN , Donggyu CHANG , Youngjoo CHAE , Aram CHOI , Jeuk HA
摘要： Disclosed are a positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same.
The positive active material includes a first positive active material in a form of secondary particles including a plurality of primary particles that are aggregated together, and a second positive active material having a single crystal form, wherein both of the first positive active material and the second positive active material are nickel-based positive active materials, each of the first positive active material and the second positive active material is coated with cobalt, and a maximum roughness of a surface of the second positive active material is greater than or equal to about 15 nm.
-
-
-
-
-
-
-
-
-
搜索结果
21 条记录 (耗时 0.015 秒)
