公开(公告)号：US10141567B2

公开(公告)日：2018-11-27

申请号：US15171144

申请日：2016-06-02

申请人： L&F CO., LTD.

发明人： Su An Choi ,  Ho Jun Jeong ,  Sang Hoon Jeon ,  Ji Woon Yang ,  Jun Ho Shin ,  Ji Sun An ,  Bong Jun Jeong

IPC分类号： H01M4/36 ,  H01M4/136 ,  H01M4/1315 ,  H01M10/0525 ,  H01M4/48 ,  H01M4/525 ,  H01M4/62 ,  H01M4/04 ,  H01M4/13915 ,  H01M4/1397 ,  H01M4/485 ,  H01M4/50 ,  H01M4/505 ,  H01M4/52 ,  H01M4/58 ,  H01M10/052 ,  H01M4/02

摘要： There are provided a cathode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery containing the same. The cathode active material for a lithium secondary battery includes: a core made of a compound reversibly intercalating and deintercalating lithium; and a coating layer positioned on at least a portion of a surface of the compound, wherein the coating layer is a composite coating layer containing Li3PO4 and LiF, and further containing a lithium metal compound, a metal oxide, a metal fluoride compound, and/or a combination thereof, and the core is doped with fluorine.

公开(公告)号：US12002955B2

公开(公告)日：2024-06-04

申请号：US17294447

申请日：2018-11-29

申请人： L&F CO., LTD.

发明人： Jaeshin Shin ,  Sun Hye Lim ,  Jeongsoo Son ,  Jihye Ku ,  Sung Kyun Chang ,  Sang Hoon Jeon ,  Ji Sun An

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

CPC分类号： H01M4/525 ,  H01M4/0471 ,  H01M4/364 ,  H01M4/366 ,  H01M4/505 ,  H01M10/0525

摘要： Disclosed are a cathode active material for a lithium secondary battery including a core containing lithium composite metal oxide, and a coating layer disposed on the core, containing a mixture of lithium oxide, tungsten oxide, boron oxide and phosphorus oxide, and having an amorphous phase, and a lithium secondary battery including the same.

公开(公告)号：US20190074512A1

公开(公告)日：2019-03-07

申请号：US16083795

申请日：2016-11-28

申请人： L&F CO., LTD.

发明人： Su An Choi ,  Ho Jun Jeong ,  Sang Hoon Jeon ,  Ji Woon Yang ,  Jun Ho Shin ,  Jin Seong Jeong ,  Ji Sun An

IPC分类号： H01M4/525 ,  C01G51/00 ,  H01M4/36 ,  H01M4/58 ,  H01M4/505 ,  H01M4/131 ,  H01M10/0525

摘要： The present invention relates to a metal oxide powder, a method of preparing the same, and a lithium secondary battery using the same, which comprises: a metal oxide powder is represented by Formula (1), Lix(M1-m-zAmDz)Ot  Formula (1) in the above Formula (1), 0.85≤x≤1.2, 0≤m≤0.01, 0 3.5.

公开(公告)号：US11495791B2

公开(公告)日：2022-11-08

申请号：US16620042

申请日：2017-11-27

申请人： L&F CO., LTD.

发明人： Ji Hyun Shin ,  Sun Hye Lim ,  Joo Hyeong Woo ,  Su An Choi ,  Sang Hoon Jeon ,  Ji Sun An

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

摘要： The present invention relates to a cathode active material, and a lithium secondary battery comprising the same, the present invention provides a cathode active material, represented by the following Chemical Formula 1, wherein I003/I104 ratio is 1.6 or more, and R-factor value represented by the following Formula 1 is 0.40 to 0.44, and c-axis lattice constant (c) and a-axis lattice constant (a) satisfy 3(a)+5.555≤(c)≤3(a)+5.580: R-factor=(I102+I006)/(I101)  Formula 1 wherein I003, I006, I101, I102, and I104 are the intensity of diffraction peaks on the (003), (006), (101), (102), and (104) planes by X-ray diffraction analysis using CuKα-rays, Liα[(NixCoy)1-βAβ]Oz  Chemical Formula 1 in the Chemical Formula 1, 0.95≤α≤1.1, 0.75≤x≤0.95, 0.03≤y≤0.25, 0

公开(公告)号：US10938031B2

公开(公告)日：2021-03-02

申请号：US16083795

申请日：2016-11-28

申请人： L&F CO., LTD.

发明人： Su An Choi ,  Ho Jun Jeong ,  Sang Hoon Jeon ,  Ji Woon Yang ,  Jun Ho Shin ,  Jin Seong Jeong ,  Ji Sun An

IPC分类号： H01M4/13 ,  H01M4/50 ,  H01M4/52 ,  C01G51/00 ,  H01M4/525 ,  H01M4/131 ,  H01M4/505 ,  H01M10/0525 ,  C01G53/00 ,  H01M4/36 ,  H01M4/58 ,  H01M4/02

摘要： The present invention relates to a metal oxide powder, a method of preparing the same, and a lithium secondary battery using the same, which comprises: a metal oxide powder is represented by Formula (1), Lix(M1-m-zAmDz)Ot  Formula (1) in the above Formula (1), 0.85≤x≤1.2, 0≤m≤0.01, 0 3.5.

公开(公告)号：US10673071B2

公开(公告)日：2020-06-02

申请号：US16083765

申请日：2017-03-02

申请人： L&F CO., LTD.

发明人： Su An Choi ,  Sang Hoon Jeon ,  Su Youn Kwon ,  Mi Hye Yun ,  Yu Jin Sohn ,  Ji Sun An ,  Bong Jun Jeong

IPC分类号： H01M4/505 ,  H01M10/0525 ,  C01G53/00 ,  H01M4/62 ,  H01M4/36 ,  H01M4/525 ,  H01M4/02

摘要： In an embodiment of the present invention, a positive active material for a lithium secondary battery is represented by Formula 1, and includes a core including a compound having a core portion and a surface portion, and the compound has a lower L3/L2 intensity ratio of Ni in the surface portion than an L3/L2 intensity ratio of Ni in the core portion. Li[LizA(1-z-a)Da]EbO2-b  [Formula 1] (In the above formula (1), A is NiαCoβMnγ, D is at least one element selected from the group consisting of Na, K, Mg, Ca, Sr, Ni, Co, Ti, Al, B, Si, Sn, Mn, Cr, Fe, V, Zr, Nb, and Mo, E is at least one element selected from the group consisting of P, F, and S, −0.05≤z≤0.1, 0≤a≤0.05, 0≤b≤0.05, 0.3≤α≤0.9, 0.05≤β≤0.4, and 0.05≤γ≤0.4.)(The L3/L2 intensity ratio of Ni is the oxidation number of Ni measured by electronic energy loss spectroscopy (EELS).).

公开(公告)号：US10439211B2

公开(公告)日：2019-10-08

申请号：US15171212

申请日：2016-06-02

申请人： L&F CO., LTD.

发明人： Su An Choi ,  Ho Jun Jeong ,  Sang Hoon Jeon ,  Ji Woon Yang ,  Jun Ho Shin ,  Ji Sun An ,  Bong Jun Jeong

IPC分类号： H01M4/36 ,  H01M4/58 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/131 ,  H01M10/0525 ,  H01M10/052 ,  H01M4/02

摘要： There are provided a cathode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery containing the same. The cathode active material for a lithium secondary battery includes: a compound reversibly intercalating and deintercalating lithium; and a coating layer positioned on at least a portion of a surface of the compound, wherein the coating layer is a composite coating layer containing Li3PO4 and further containing a lithium metal oxide, a metal oxide, and/or a combination thereof, the lithium metal oxide or the metal oxide containing Zr.

公开(公告)号：US10439205B2

公开(公告)日：2019-10-08

申请号：US15506824

申请日：2015-08-28

申请人： L&F CO., LTD.

发明人： Su An Choi ,  Ji Sun An ,  Chang Min Choi ,  Su Youn Kwong ,  Hyun Chul Jung ,  Sung Woo Cho

IPC分类号： H01M4/36 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/505 ,  H01M10/052 ,  H01M4/02

摘要： The present invention relates to a nickel-based composite oxide for a lithium secondary battery, and a lithium secondary battery including the same, and provides a nickel-based composite oxide for a lithium secondary battery, which comprises: a core part; and at least one tunnel connected from the inside of the core part to the outside thereof, wherein the tunnel has a diameter of 100 nm or larger, and the composite oxide further comprises coating layers located inside the tunnel and outside the core part.

公开(公告)号：US20190131624A1

公开(公告)日：2019-05-02

申请号：US16083765

申请日：2017-03-02

申请人： L&F CO., LTD.

发明人： Su An Choi ,  Sang Hoon Jeon ,  Su Youn Kwon ,  Mi Hye Yun ,  Yu Jin Sohn ,  Ji Sun An ,  Bong Jun Jeong

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

摘要： In an embodiment of the present invention, a positive active material for a lithium secondary battery is represented by Formula 1, and includes a core including a compound having a core portion and a surface portion, and the compound has a lower L3/L2 intensity ratio of Ni in the surface portion than an L3/L2 intensity ratio of Ni in the core portion. Li[LizA(1-z-a)Da]EbO2-b   [Formula 1] (In the above formula (1), A is NiαCoβMnγ, D is at least one element selected from the group consisting of Na, K, Mg, Ca, Sr, Ni, Co, Ti, Al, B, Si, Sn, Mn, Cr, Fe, V, Zr, Nb, and Mo, E is at least one element selected from the group consisting of P, F, and S, −0.05≤z≤0.1, 0≤a≤0.05, 0≤b≤0.05, 0.3≤α≤0.9, 0.05≤β≤0.4, and 0.05≤γ≤0.4.)(The L3/L2 intensity ratio of Ni is the oxidation number of Ni measured by electronic energy loss spectroscopy (EELS).)

公开(公告)号：US20180026266A1

公开(公告)日：2018-01-25

申请号：US15547025

申请日：2016-02-01

申请人： L&F CO., LTD.

发明人： Su An Choi ,  Ho Jun Jeong ,  Sang Hoon Jeon ,  Su Youn Kwon ,  Ji Sun An ,  Bong Jun Jeong

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

CPC分类号： H01M4/525 ,  C01G53/50 ,  C01P2002/60 ,  C01P2004/50 ,  H01M4/505 ,  H01M10/052 ,  H01M2004/028

摘要： Provided is a positive active material for a lithium secondary battery, which is a compound capable of reversible intercalation and deintercalation of lithium and having secondary particles formed by the aggregation of primary particles, wherein the size of crystal grains is between 0.0593 and 0.0610 μm at a (003) peak in the spectrum analysis of X-ray diffraction analysis.