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1.发明公开
公开(公告)号：EP4447162A2
公开(公告)日：2024-10-16
申请号：EP24197652.1
申请日：2023-03-29
发明人： MOON, Joon Hyung , PARK, Eun Jun , YU, Do Ae , CHUNG, Ju Ho
IPC分类号： H01M4/58
摘要： An anode active material for a secondary battery according to an embodiment of the present invention includes lithium-silicon composite oxide particle. The lithium-silicon composite oxide particles include at least one of Li 2 SiO 3 and Li 2 Si 2 O 5 and have a phase fraction ratio defined by Equation 1 of 1.0 or less. A content of particles having a diameter of less than 3 µm is 5 vol% or less based on a total volume of the lithium-silicon composite oxide particles.
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公开(公告)号：EP4345944A2
公开(公告)日：2024-04-03
申请号：EP23191075.3
申请日：2023-08-11
发明人： MOON, Joon Hyung , PARK, Eun Jun , YUN, Jung Hyun , CHUNG, Ju Ho
摘要： An anode active material for a lithium secondary battery and a lithium secondary battery including the same are provided. The anode active material includes a silicon-based active material particle, and a plurality of composite particles each including a carbon coating layer formed on at least a portion of a surface of the silicon-based active material particle, wherein a relative standard deviation of G/Si peak intensity ratios of a Raman spectrum as defined in Equation 1 measured for each of 50 different composite particles among the plurality of composite particles is 50% or less.
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3.发明公开
公开(公告)号：EP4293748A3
公开(公告)日：2024-03-06
申请号：EP23173155.5
申请日：2023-05-12
申请人： SK On Co., Ltd.
发明人： YOO, Seok Keun , PARK, Gwi Ok , CHUNG, Ju Ho
IPC分类号： H01M4/139 , H01M4/1395 , H01M4/36 , H01M4/38 , H01M4/48 , H01M4/587 , H01M4/62 , H01M4/133 , H01M4/134 , H01M10/052 , H01M10/0525 , H01M4/02
摘要： An anode active material and a secondary battery including the anode active material are disclosed. An anode active material for a secondary battery includes a plurality of composite active material particles, each composite active material particle containing a first active material that includes silicon and a second active material that includes carbon, and a carbon coating covering at least a portion of a surface of at least one of the plurality of composite active material particles. The anode active material has a volume-based particle size distribution represented as a ratio D 10 /D 50 ranging from 0.40 to 0.75 and a ratio D min /D 50 ranging from 0.3 to 1, wherein D 10 indicates a particle diameter corresponding to a volume fraction of 10%, D 50 indicates a particle diameter corresponding to a volume fraction of 50%, and D min indicates a minimum particle diameter.
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公开(公告)号：EP4293740A1
公开(公告)日：2023-12-20
申请号：EP23177806.9
申请日：2023-06-06
发明人： MOON, Joon Hyung , PARK, Eun Jun , YUN, Jung Hyun , CHUNG, Ju Ho
IPC分类号： H01M4/04 , H01M4/133 , H01M4/134 , H01M4/1393 , H01M4/1395 , H01M4/36 , H01M4/38 , H01M4/583 , H01M10/052 , H01M4/02
摘要： An anode active material for a lithium secondary and a lithium second battery including the same are provided. The anode active material includes a plurality of carbon-based particles containing pores therein, and a silicon-containing coating formed at an inside of the pores or on a surface of each of the carbon-based particles. A relative standard deviation of D/G peak intensity ratios of a Raman spectrum measured for 50 different carbon-based particles among the plurality of carbon-based particles is 10 % or less.
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公开(公告)号：EP4286329A1
公开(公告)日：2023-12-06
申请号：EP23176567.8
申请日：2023-05-31
申请人： SK On Co., Ltd.
发明人： PARK, Eun Jun , MOON, Joon Hyung , CHUNG, Ju Ho
IPC分类号： C01B33/113 , C01B33/32 , H01M4/1391 , H01M4/36 , H01M4/48 , H01M4/485
摘要： Provided are a lithium-doped silicon-based negative electrode active material, a method of producing the same, and a negative electrode and a lithium secondary battery including the same. According to an exemplary embodiment of the present invention, a method of producing a negative electrode active material for a secondary battery including: a) a metal doping process of mixing a silicon-based material and a metal precursor and performing a heat treatment to dope the silicon-based material with a metal; and b) an acid gas treatment process of treating the metal-doped silicon-based material in an acid gas atmosphere to remove residual metal may be provided.
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公开(公告)号：EP4057391A2
公开(公告)日：2022-09-14
申请号：EP22161654.3
申请日：2022-03-11
申请人： SK On Co., Ltd.
发明人： PARK, Gwi Ok , YOO, Seok Keun , CHUNG, Ju Ho
IPC分类号： H01M4/583 , H01M4/133 , H01M4/134 , H01M4/1393 , H01M4/1395 , H01M4/38 , H01M4/02
摘要： An anode active material for a lithium secondary battery and a lithium secondary battery are provided. The anode active material includes a carbon-based particle including pores formed in at least one of an inside of the particle and a surface of the particle and having a pore size of the carbon-based particle is 20 nm or less, and silicon formed at an inside of the pores of the carbon-based particle or on the surface of the carbon-based particle. Silicon has an amorphous structure or a crystallite size of silicon measured by an XRD analysis is 7 nm or less. Difference between volume expansion ratios of carbon and silicon can be reduced to improve life-span property of the secondary battery.
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公开(公告)号：EP4057384A2
公开(公告)日：2022-09-14
申请号：EP22161651.9
申请日：2022-03-11
申请人： SK On Co., Ltd.
发明人： PARK, Gwi Ok , YOO, Seok Keun , CHUNG, Ju Ho
IPC分类号： H01M4/133 , H01M4/134 , H01M4/1393 , H01M4/1395 , H01M4/38 , H01M4/583
摘要： An anode active material for a lithium secondary battery and a lithium secondary battery are provided. The anode active material includes a carbon-based particle including pores formed in at least one of an inside of the particle and a surface of the particle and having a pore size of the carbon-based particle is 20 nm or less, and silicon formed at an inside of the pores of the carbon-based particle or on the surface of the carbon-based particle. A peak intensity ratio in a Raman spectrum of silicon defined as I(515)/I(480) is 1.2 or less. Difference between volume expansion ratios of carbon and silicon can be reduced to improve life-span property of the secondary battery.
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8.发明公开
公开(公告)号：EP4431455A1
公开(公告)日：2024-09-18
申请号：EP23214233.1
申请日：2023-12-05
发明人： CHUNG, Ju Ho , PARK, Gwi Ok , CHOI, Jae Young
IPC分类号： C01B33/113 , H01M4/13 , H01M4/36 , H01M4/48 , H01M4/587
CPC分类号： Y02E60/10 , C01B33/113 , C01P2002/5220130101 , C01P2004/8020130101 , H01M4/48 , H01M4/366 , H01M4/362 , H01M4/587 , H01M4/13 , H01M10/052 , H01M2004/02720130101 , H01M4/133 , H01M4/483 , H01M10/0525 , H01M4/625 , H01M4/485 , C01B33/12
摘要： An anode active material for a secondary battery according to an embodiment of the present invention includes a silicon oxide particle. The silicon oxide particle has a core portion and a surface portion on the core portion, and an oxidation number ratio defined as OS/OC of the silicon oxide particle is 1.7 or more, and less than 2.2. OS is an oxidation number of silicon oxide at the surface portion obtained by an X-ray photoelectron spectroscopy (XPS) analysis, and OC is an oxidation number of silicon oxide at the core portion obtained by the XPS analysis.
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公开(公告)号：EP4401164A1
公开(公告)日：2024-07-17
申请号：EP23212751.4
申请日：2023-11-28
申请人： SK On Co., Ltd.
发明人： HAN, Jun Hee , KIM, Moon Sung , KIM, Hyo Mi , RYU, Sang Baek , YOOK, Seung Hyun , JANG, Hwan Ho , CHUNG, Da Bin , PARK, Da Hye , BANG, Sang In , YANG, Young Mo , CHUNG, Ju Ho
IPC分类号： H01M4/133 , H01M4/134 , H01M4/1393 , H01M4/1395 , H01M4/36 , H01M4/38 , H01M4/587
CPC分类号： H01M4/366 , H01M4/386 , H01M4/587 , H01M4/1395 , H01M4/1393 , H01M4/133 , H01M4/134 , H01M4/38 , H01M2004/02720130101
摘要： An anode active material for a secondary battery according to an embodiment of the present disclosure includes an anode current collector, a first anode active material layer on at least one surface of the anode current collector and including a graphite-based active material and a silicon-based active material doped with a metal element, and a second anode active material layer on the first anode active material layer and including a porous structure. The porous structure includes a carbon-based particle having pores and a silicon-containing coating formed at an inside of the pores or on a surface of the carbon-based particle.
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10.发明公开
公开(公告)号：EP4254555A1
公开(公告)日：2023-10-04
申请号：EP23165012.8
申请日：2023-03-29
申请人： SK On Co., Ltd.
发明人： MOON, Joon Hyung , PARK, Eun Jun , CHUNG, Ju Ho
摘要： Provided is a negative electrode active material for a secondary battery including a core-shell composite including: a core including a silicon oxide (SiO x , 0
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