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公开(公告)号：EP4410746A1
公开(公告)日：2024-08-07
申请号：EP24154127.5
申请日：2024-01-26
发明人： KANG, Byungwuk , YOU, Yongchan , LEE, Jangwook , CHOI, Seungyeon , KIM, Soohyeon
CPC分类号： C01G53/42 , C01P2004/8020130101 , H01M4/00
摘要： Provided are a positive electrode active material for a lithium secondary battery, a method of preparing the positive electrode active material, and a lithium secondary battery including a positive electrode that includes the positive electrode active material, wherein the positive electrode active material includes large crystal secondary particles of a nickel-based lithium metal oxide which include a plurality of primary particles, wherein the large crystal secondary particles have a hollow structure having pores therein, the primary particles have a size of about 1 µm to about 4 µm, the large crystal secondary particles have a size of about 10 µm to about 18 µm, the positive electrode active material comprises a coating layer containing a cobalt compound which is on surfaces of the large crystal secondary particles of the nickel-based lithium metal oxide, and the large crystal secondary particles of the nickel-based lithium metal oxide are doped with molybdenum.
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公开(公告)号：EP4144703A1
公开(公告)日：2023-03-08
申请号：EP22193247.8
申请日：2022-08-31
发明人： LEE, Dookyun , KANG, Byungwuk , KIM, Sungsoo , KIM, Saehwan , KIM, Soohyeon , YOU, Yongchan , Jangwook, LEE , Minah, CHA , CHOI, Seungyeon
摘要： Provided are a cathode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery containing a cathode including the cathode active material, in which the cathode active material includes nickel-based lithium metal oxide containing single-crystal particles, wherein a particle size of the single-crystal particles is about 1 µm to about 8 µm, and a particle size distribution of the single-crystal particles expressed by (D90-D10)/D50 is 1.4 or less.
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公开(公告)号：EP4446285A1
公开(公告)日：2024-10-16
申请号：EP24165463.1
申请日：2024-03-22
发明人： KANG, Byungwuk , YOU, Yongchan , LEE, Dookyun , LEE, Jangwook , CHOI, Seungyeon , KIM, Soohyeon
摘要： A cathode active material, a method of preparing the same, a cathode including the same, and a lithium secondary battery including a cathode including the same are provided. The cathode active material includes nickel-based lithium metal oxide monolithic particles, the nickel-based lithium metal oxide monolithic particles having an average size of about 1 µm to about 4 µm, and a cobalt compound-containing coating layer on surfaces of the nickel-based lithium metal oxide monolithic particles, wherein the nickel-based lithium metal oxide monolithic particles are doped with molybdenum.
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公开(公告)号：EP4098626A1
公开(公告)日：2022-12-07
申请号：EP22176852.6
申请日：2022-06-01
发明人： KIM, Soohyeon , KIM, Sungsoo , LEE, Jangwook , CHOI, Seungyeon
摘要： A composite cathode active material, a method of preparing the composite cathode active material, and a lithium secondary battery including a cathode including the composite cathode active material are provided. The composite cathode active material includes: a nickel-based active material including about 60 mol% or more of nickel; and a coating layer on a surface of the nickel-based active material, the coating layer including a lanthanide composite. The composite cathode active material includes or is in the form of single crystal particles having an average particle diameter in a range of about 2 µm to about 8 µm, an aggregate of primary particles having an average particle diameter in a range of about 2 µm to about 8 µm, or a combination thereof.
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公开(公告)号：EP4032861A1
公开(公告)日：2022-07-27
申请号：EP21214506.4
申请日：2021-12-14
发明人： KIM, Sungsoo , KIM, Jongmin , KIM, Soohyeon , YANG, Wooyoung , LEE, Jangwook , CHOI, Seungyeon , YOU, Yongchan
摘要： A nickel-based metal oxide for a lithium secondary battery, a nickel-based active material obtained from the nickel-based metal oxide, a method of preparing the nickel-based metal oxide, and a lithium secondary battery including the nickel-based metal oxide as a cathode are provided. The nickel-based metal oxide for a lithium secondary battery includes a cubic composite phase, wherein the cubic composite phase includes a metal oxide phase represented by Formula 1 and a metal oxide phase represented by Formula 2:
Formula 1 Ni 1-x-z-k M k Li x Co z O 1-y ,
wherein, in Formula 1, M is at least one element selected from the group consisting of boron (B), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), titanium (Ti), vanadium (V), chromium (Cr), iron (Fe), copper (Cu), zirconium (Zr), and aluminium (Al), 0≤x≤0.1, 0≤y≤0.1, 0≤z≤0.5, and 0≤k≤0.5
Formula 2 Ni 6-x-z-k M k Li x Co z MnO 8-y ,
and wherein, in Formula 2, M is at least one element selected from the group consisting of boron (B), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), titanium (Ti), vanadium (V), chromium (Cr), iron (Fe), copper (Cu), zirconium (Zr), and aluminium (Al), 0≤x≤0.1, 0≤y≤0.1, 0≤z≤0.5, and 0≤k≤0.5, and the case where x of Formula 1 and x of Formula 2 are 0 at the same time is excluded.-
公开(公告)号：EP3846256A1
公开(公告)日：2021-07-07
申请号：EP19854544.4
申请日：2019-06-14
发明人： KIM, Soohyeon , KIM, Jongmin
摘要： Provided is a positive active material for a rechargeable lithium battery including a nickel-based composite oxide having a nickel content of greater than or equal to 60 mol% relative to a total amount of metal excluding lithium and a coating layer on the surface of the nickel-based composite oxide, wherein the coating layer includes lithium fluoride (LiF) and metal fluoride produced by firing a metal oxide and a fluorine-based organic material.
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