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公开(公告)号：US11581535B2
公开(公告)日：2023-02-14
申请号：US16701621
申请日：2019-12-03
申请人： LG Chem, Ltd.
发明人： Jin Tae Hwang , Dong Hun Lee , Sung Bin Park , Hyung Man Cho , Jung Min Han , Wang Mo Jung
摘要： A method for producing a positive electrode active material, a positive electrode active material produced thereby, and a positive electrode and a lithium secondary battery including the same are provided. The method includes preparing a nickel-manganese-aluminum precursor having an atomic fraction of nickel of 90 atm % or greater in all transition metals, and mixing the nickel-manganese-aluminum precursor, a cobalt raw material, and a lithium raw material and heat treating the mixture.
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公开(公告)号：US20220059832A1
公开(公告)日：2022-02-24
申请号：US17298818
申请日：2019-12-04
申请人： LG Chem, Ltd.
发明人： Jung Min Han , Dong Hun Lee , Sung Bin Park , Hyung Man Cho , Jin Tae Hwang , Wang Mo Jung
IPC分类号： H01M4/525 , H01M4/505 , H01M10/0525
摘要： A positive electrode material and a positive electrode and a lithium secondary battery including the same are provided. The positive electrode material having a bimodal particle size distribution which includes large-diameter particles and small-diameter particles having different average particle diameters (D50), wherein the large-diameter particles are lithium composite transition metal oxide having a nickel content of 80 atm % or more in all transition metals thereof, and the small-diameter particles are a lithium composite transition metal oxide including nickel, cobalt, and aluminum, having a nickel content of 80 atm % to 85 atm % in all transition metals, and having an atomic ratio of the cobalt to the aluminum (Co/Al) of 1.5 to 5.
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公开(公告)号：US20200343537A1
公开(公告)日：2020-10-29
申请号：US16758314
申请日：2018-11-13
申请人： LG Chem, Ltd.
发明人： Chi Ho Jo , Min Kyu You , Sung Bin Park , Hyuck Hur , Jin Tae Hwang , Wang Mo Jung
IPC分类号： H01M4/36 , H01M4/525 , H01M10/0525 , H01M4/485 , C01G51/00
摘要： A method for preparing a lithium cobalt-based positive electrode active material and a positive electrode active material prepared by the method are provided. The method includes dry-mixing and then heat treating a lithium cobalt oxide particle represented by Formula 1 and one or more lithium metal oxide particle selected from the group consisting of lithium aluminum oxide, lithium zirconium oxide, and lithium titanium oxide.
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4.发明申请公开(公告)号：US20200335783A1
公开(公告)日：2020-10-22
申请号：US16763341
申请日：2018-11-21
申请人： LG Chem, Ltd.
发明人： Dong Hun Lee , Wang Mo Jung , Sung Bin Park , Ji Hye Kim , Dong Hwi Kim , Hyung Man Cho , Jung Min Han
摘要： A positive electrode material including a first positive electrode active material represented by Formula 1 and a second positive electrode active material represented by Formula 2, a positive electrode including the same, and a lithium secondary battery including the positive electrode are provided. The positive electrode material has a bimodal particle size distribution including large diameter particles and small diameter particles, and the difference in average particle diameter (D50) between the large diameter particles and the small diameter particles is 3 μm or greater.
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公开(公告)号：US10205169B2
公开(公告)日：2019-02-12
申请号：US15032396
申请日：2015-09-23
申请人： LG Chem, Ltd.
发明人： Jun Hyuk Song , Eun Kyung Kim , Sang Wook Woo , Sung Bin Park , Ye Ri Kim , Ju Ho Chung
IPC分类号： H01M4/62 , H01M4/485 , H01M10/052 , C23C16/56 , H01M4/04 , H01M4/36 , H01M10/0525 , C01D15/02 , C01G23/00 , H01M4/02
摘要： A negative active material for rechargeable lithium secondary batteries, a method of preparing the same, and a rechargeable lithium secondary battery including the same are disclosed. The negative active material includes a core including a lithium titanium oxide of Formula 1, and a coating layer positioned on a surface of the core and including an acid anhydride physisorbed onto the core, and thus can be useful in inhibiting battery side reactions and gas generation and improving battery performance since moisture formed during a redox reaction is effectively absorbed into a surface of the negative active material. LixTiyO4 [Formula 1] In Formula 1, x and y are as defined in the detailed description.
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6.发明申请公开(公告)号：US20180316007A1
公开(公告)日：2018-11-01
申请号：US15771885
申请日：2017-03-30
申请人： LG Chem, Ltd.
发明人： Chi Ho Jo , Sung Bin Park , Young Uk Park , Bo Ram Lee , Hyuck Hur , Wang Mo Jung
IPC分类号： H01M4/525 , H01M10/0525 , C01G51/00
CPC分类号： C01G51/00 , H01M4/131 , H01M4/485 , H01M4/525 , H01M10/0525
摘要： Provided is a positive electrode active material including lithium transition metal oxide for a lithium secondary battery, in which the lithium transition metal oxide includes a dopant diffusing from the surface of the lithium transition metal oxide particle, and the dopant is distributed with a concentration gradient from the center of the particle toward the surface thereof.
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公开(公告)号：US09887420B2
公开(公告)日：2018-02-06
申请号：US14552932
申请日：2014-11-25
申请人： LG Chem, Ltd.
发明人： Sung Bin Park , Ji Hye Kim , Wang Mo Jung , Sang Seung Oh , Byung Chun Park
CPC分类号： H01M4/485 , H01M4/366 , H01M4/505 , H01M4/525 , H01M4/582 , H01M4/5825 , H01M10/052 , H01M2220/30
摘要： Provided are lithium transition metal composite particle including a lithium transition metal oxide particle, a metal-doped layer formed by doping the lithium transition metal oxide particle, and LiF formed on the lithium transition metal oxide particle including the metal-doped layer, a preparation method thereof, and a lithium secondary battery including the lithium transition metal composite particles.
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公开(公告)号：US09871246B2
公开(公告)日：2018-01-16
申请号：US14519500
申请日：2014-10-21
申请人： LG Chem, Ltd.
发明人： Ji Hye Kim , Wang Mo Jung , Sang Seung Oh , Byung Chun Park , Sung Bin Park
CPC分类号： H01M4/366 , H01M4/0404 , H01M4/0419 , H01M4/0435 , H01M4/0471 , H01M4/136 , H01M4/1397 , H01M4/362 , H01M4/5825 , H01M4/625 , H01M10/052
摘要： Provided are a cathode active material including lithium transition metal phosphate particles, wherein the lithium transition metal phosphate particles include a first secondary particle formed by agglomeration of two or more first primary particles, and a second secondary particle formed by agglomeration of two or more second primary particles in the first secondary particle, and a method of preparing the same. Since the cathode active material according to an embodiment of the present invention may include first primary particles and second primary particles having different average particle diameters, the exfoliation of the cathode active material from a cathode collector may be minimized and performance characteristics, such as high output characteristics and an increase in available capacity, of a secondary battery may be further improved. In addition, since the first secondary particles are porous, the secondary particles are collapsed and fractured due to rolling when used in a cathode.
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公开(公告)号：US20140220444A1
公开(公告)日：2014-08-07
申请号：US14248479
申请日：2014-04-09
申请人： LG CHEM, LTD.
发明人： Myung Ki Lee , Sung Bin Park , Sung Joong Kang , Wang Mo Jung
CPC分类号： H01M4/521 , C01G49/06 , C01P2004/03 , C01P2004/30 , C01P2004/62 , C01P2006/40 , H01M4/248 , H01M4/523 , H01M4/622 , H01M4/625 , H01M2004/021 , Y10T428/2982
摘要： Provided are a method of preparing iron oxide nanoparticles, iron oxide nanoparticles prepared thereby, and an anode material including the iron oxide nanoparticles.
摘要翻译： 提供制备氧化铁纳米颗粒的方法，由此制备的氧化铁纳米颗粒以及包含氧化铁纳米颗粒的阳极材料。
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公开(公告)号：US11450846B2
公开(公告)日：2022-09-20
申请号：US16632171
申请日：2018-09-21
申请人： LG Chem, Ltd.
发明人： Young Uk Park , Tae Gu Yoo , Jin Tae Hwang , Wang Mo Jung , Sung Bin Park
摘要： The present disclosure relates to a positive electrode material which includes a first positive electrode active material, and a second positive electrode active material in the form of a single particle, wherein an amount of lithium impurities on a surface of the second positive electrode active material is 0.14 wt % or less based on a total weight of the second positive electrode active material, and at least one of nickel, cobalt, and manganese included in the second positive electrode active material has a concentration gradient gradually changing from the center of the particle to a surface thereof, a method of preparing the positive electrode material, and a positive electrode for a lithium secondary battery and a lithium secondary battery which include the positive electrode material.
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