公开(公告)号：EP3896760A1

公开(公告)日：2021-10-20

申请号：EP18943305.5

申请日：2018-12-13

申请人： POSCO ,  Research Institute of Industrial Science & Technology ,  POSCO Chemical Co., Ltd

发明人： NAM, Sang Cheol ,  KIM, Jae Han ,  KIM, Jeong Han ,  SONG, Jung Hoon

IPC分类号： H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M10/052

摘要： The present disclosure relates to a positive electrode active material for lithium secondary battery comprising a first compound represented by Chemical Formula 1, and a second compound represented by Chemical Formula 2, wherein, a content of the first compound is 65 wt% or more based on 100 wt% of the positive electrode active material, and a lithium secondary battery comprising the same.

        [Chemical Formula 1]     Lia1 Nib1Coc1 Mn d1 M1 e1 M2 f1 O 2-f1

        [Chemical Formula 2]     Li a2 Ni b2 CO c2 Mn d2 M3 e2 M4 f2 O 2-f2

wherein, each composition and molar ratio of Chemical Formulas 1 and 2 are as defined in the specification.

公开(公告)号：EP3731313A1

公开(公告)日：2020-10-28

申请号：EP18892215.7

申请日：2018-12-18

申请人： POSCO ,  Research Institute of Industrial Science & Technology ,  POSCO Chemical Co., Ltd

发明人： MIN, Sung Hwan ,  KIM, Jeong Han ,  SONG, Jung Hoon

IPC分类号： H01M4/525 ,  H01M4/505 ,  C01G53/00 ,  H01M10/052

摘要： A positive electrode active material for a lithium secondary battery comprising a compound represented by Chemical Formula 1 is introduced.

        [Chemical Formula 1]     Li 1+m Ni 1-w-x-y-z Co w Mn x M1 y M2 z O 2-p X p

(In the Chemical Formula 1,
M1 and M2 are different from each other, and any one element selected from the group consisting of Al, Mg, Zr, Sn, Ca, Ge, Ti, Cr, Fe, Zn, Y, Ba, La, Ce, Sm, Gd, Yb, Sr, Cu and Ga respectively,
X is any one element selected from the group consisting of F, N, S, and P,
w, x, y, z, p and m are respectively 0.125

公开(公告)号：EP3734716A1

公开(公告)日：2020-11-04

申请号：EP18897184.0

申请日：2018-12-18

申请人： POSCO ,  Research Institute of Industrial Science & Technology ,  POSCO Chemical Co., Ltd

发明人： MIN, Sung Hwan ,  KIM, Jeong Han ,  SONG, Jung Hoon

IPC分类号： H01M4/36 ,  H01M4/62 ,  H01M4/525 ,  H01M4/505 ,  C01B35/12 ,  C01G53/00 ,  H01M10/052

摘要： The present invention relates to a positive active material for lithium secondary battery, its manufacturing method, and lithium secondary battery including the same, and it provides that a positive active material for lithium secondary battery, comprising: a core and a coating layer, wherein, the core is lithium metal oxide, the coating layer comprises boron, the boron compound in the coating layer comprises a lithium boron oxide and a boron oxide, the lithium boron oxide is included 70 wt% or more and 99 wt% in the entire coating layer, the lithium boron oxide comprises Li 2 B 4 O 7 , with respect to the lithium boron oxide 100wt%, the content of Li 2 B 4 O 7 is 55 wt% or more and 99 wt% or less.

公开(公告)号：EP3766837A1

公开(公告)日：2021-01-20

申请号：EP19768665.2

申请日：2019-03-12

申请人： POSCO Chemical Co., Ltd

发明人： CHOI, Su Bong ,  KANG, Chun Gu ,  KIM, Jeong Han ,  LEE, Jae An

IPC分类号： C01G23/00 ,  H01M4/36 ,  H01M4/485 ,  H01M4/38

摘要： The present disclosure relates to a lithium titanium composite oxide including aluminum-coated primary particles and to a method for manufacturing the same.
A lithium titanium composite oxide including aluminum-coated primary particles according to an embodiment is manufactured as the primary particles are coated with aluminum by mixing an aluminum compound with particles re-pulverized after preparation of a lithium titanium oxide and then by spray-drying the mixture again to prepare secondary particles, and a battery including the lithium titanium composite oxide including the aluminum-coated primary particles according to an embodiment exhibits effects of suppressing electrolyte decomposition and gas generation that may be respectively caused by titanium ions and residual lithium in conventional lithium titanium composite oxides.

公开(公告)号：EP4254558A1

公开(公告)日：2023-10-04

申请号：EP21898544.8

申请日：2021-11-23

申请人： Posco Future M Co., Ltd

发明人： CHOI, Seung Un ,  KIM, Jae Han ,  KIM, Deuk Su ,  PARK, Hye Jeong ,  KIM, Jeong Han

IPC分类号： H01M4/525 ,  H01M4/505 ,  C01G53/00 ,  H01M10/052

摘要： The present invention relates to a lithium battery cathode active material and a preparation method therefor, the material having an orientation formed by firing a density gradient precursor in which the density gradually changes from the inside of second particles, formed as an aggregate of primary particles, to the outside of the particles. The lithium battery cathode active material according to the present invention has an oriented structure, and thus can have a long lifespan and high capacity characteristics.