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公开(公告)号：US20240313195A1
公开(公告)日：2024-09-19
申请号：US18405497
申请日：2024-01-05
申请人： SK On Co., Ltd.
发明人： Kwang Ho JEONG , Seung Deok SEO
CPC分类号： H01M4/364 , H01M4/133 , H01M4/136 , H01M4/483 , H01M4/587 , H01M4/622 , H01M10/0525 , H01M2004/021 , H01M2004/027
摘要： Provided is an anode for a lithium secondary battery and a lithium secondary battery including the same, the anode for a secondary battery including: an anode current collector; a first anode mixture layer disposed on at least one surface of the anode current collector, and including a first silicon-based anode active material; and a second anode mixture layer disposed on the first anode mixture layer, and including a second silicon-based anode active material, wherein the second silicon-based anode active material has a higher discharge capacity than the first silicon-based anode active material.
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2.发明公开公开(公告)号：US20240213446A1
公开(公告)日：2024-06-27
申请号：US18528787
申请日：2023-12-05
发明人： Kwang Ho JEONG , Seung Deok SEO , Ji Sun LEE
IPC分类号： H01M4/134 , H01M4/133 , H01M4/1393 , H01M4/1395 , H01M4/36 , H01M4/48 , H01M4/583 , H01M4/62 , H01M10/052 , H01M10/42
CPC分类号： H01M4/134 , H01M4/133 , H01M4/1393 , H01M4/1395 , H01M4/364 , H01M4/366 , H01M4/483 , H01M4/583 , H01M4/622 , H01M10/052 , H01M10/4235 , H01M2004/027
摘要： An anode active material for a secondary battery includes an anode current collector, and an anode active material layer on at least one surface of the anode current collector. The anode active material layer includes an anode active material and an anode binder. The anode active material includes a composite particle that includes a silicon-based active material particle and a solid electrolyte interphase (SEI) layer formed on at least a portion of a surface of the silicon-based active material particle. An F-density defined by Equation 1 is 23% or less.
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公开(公告)号：US20240038994A1
公开(公告)日：2024-02-01
申请号：US18350168
申请日：2023-07-11
申请人： SK On Co., Ltd.
发明人： Hyo Mi KIM , Moon Sung KIM , Sang Baek RYU , Da Hye PARK , Seung Hyun YOOK , Hwan Ho JANG , Kwang Ho JEONG , Da Bin CHUNG , Jun Hee HAN
CPC分类号： H01M4/622 , H01M4/133 , H01M4/134 , H01M4/362 , H01M4/386 , H01M4/587 , H01M10/052 , H01M2004/027
摘要： An anode for a lithium secondary battery according to exemplary embodiments of the present disclosure includes: an anode current collector; an adhesive layer formed on the anode current collector and includes a first binder; and an anode active material layer formed on the adhesive layer and includes an anode active material including silicon-carbon composite particles and a second binder. The silicon-carbon composite particles include carbon-based particles including pores, and a silicon coating layer formed inside the pores
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4.发明公开公开(公告)号：US20240213444A1
公开(公告)日：2024-06-27
申请号：US18465160
申请日：2023-09-12
发明人： Kwang Ho JEONG , Seung Deok SEO , Jae Young CHOI , Sung Do KIM , Jeong A KIM , Do Ae YU , Yong Seok LEE
IPC分类号： H01M4/134 , H01M4/04 , H01M4/133 , H01M4/1393 , H01M4/1395 , H01M4/36 , H01M4/38 , H01M4/587 , H01M4/62 , H01M10/42
CPC分类号： H01M4/134 , H01M4/0404 , H01M4/133 , H01M4/1393 , H01M4/1395 , H01M4/364 , H01M4/366 , H01M4/386 , H01M4/587 , H01M4/622 , H01M4/625 , H01M10/4235 , H01M2004/027
摘要： An anode for a lithium secondary battery includes an anode current collector, and an anode active material layer formed on at least one surface of the anode current collector. The anode active material layer includes an anode active material and an anode binder. The anode active material includes a plurality of composite particles, each of the composite particles include a silicon-based active material particle, and a solid electrolyte interphase (SEI) layer formed on at least a portion of a surface of the silicon-based active material particle. A relative standard deviation of thickness values of the SEI layer of the composite particles, which are measured by an X-ray photoelectron spectroscopy (XPS) from 9 different composite particles among the plurality of composite particles after repeating 100 cycles of charging and discharging is 20% or less.
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公开(公告)号：US20230378446A1
公开(公告)日：2023-11-23
申请号：US18319931
申请日：2023-05-18
申请人： SK On Co., Ltd.
发明人： Hyo Mi KIM , Moon Sung KIM , Sang Baek RYU , Da Hye PARK , Seung Hyun YOOK , Hwan Ho JANG , Kwang Ho JEONG , Da Bin CHUNG , Jun Hee HAN
CPC分类号： H01M4/366 , H01M4/587 , H01M4/386 , H01M4/622 , H01M10/0525 , H01M4/134 , H01M4/133 , H01M2004/027
摘要： In some implementations, the anode includes a current collector, a first anode mixture layer formed on at least one surface of the current collector, and a second anode mixture layer formed on the first anode mixture layer. The first anode mixture layer and the second anode mixture layer include a carbon-based active material, respectively. The first anode mixture layer includes a first binder, a first silicon-based active material, and a first conductive material. The second anode mixture layer includes a second binder, a second silicon-based active material, and a second conductive material. Contents of the first conductive material and the second conductive material are different from each other with respect to the total combined weight of the first anode mixture layer and the second anode mixture layer. Types of the first silicon-based active material and the second silicon-based active material are different from each other.
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公开(公告)号：US20230163277A1
公开(公告)日：2023-05-25
申请号：US17991355
申请日：2022-11-21
申请人： SK ON CO., LTD.
发明人： Kwang Ho JEONG , Sung Do KIM , Jong Hwi LIM
CPC分类号： H01M4/366 , H01M4/483 , H01M4/587 , H01M4/364 , H01M4/134 , H01M4/133 , H01M4/622 , H01M2004/027
摘要： An anode for a lithium secondary battery includes an anode current collector, and an anode active material layer including a first anode active material layer and a second anode active material layer sequentially disposed on a surface of the anode current collector. Each of the first anode active material layer and the second anode active material layer includes a silicon-based active material. A ratio of a content of the silicon-based active material in the second anode active material layer relative to a content of the silicon-based active material in the first anode active material layer among a total content of the silicon-based active material included in the anode active material layer is 1.25 or more, and less than 5.
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公开(公告)号：US20240297299A1
公开(公告)日：2024-09-05
申请号：US18589898
申请日：2024-02-28
申请人： SK ON CO., LTD.
发明人： Yong Seok LEE , Sung Do KIM , Jeong A KIM , Joon Hyung MOON , Seung Deok SEO , Young Mo YANG , Kwang Ho JEONG , Ju Ho CHUNG
IPC分类号： H01M4/36 , H01M4/02 , H01M4/04 , H01M4/133 , H01M4/137 , H01M4/1393 , H01M4/1399 , H01M4/587 , H01M4/60 , H01M10/052
CPC分类号： H01M4/366 , H01M4/0404 , H01M4/133 , H01M4/137 , H01M4/1393 , H01M4/1399 , H01M4/587 , H01M4/602 , H01M10/052 , H01M2004/027
摘要： An anode for a lithium secondary battery includes an anode current collector, a second anode active material layer disposed on the anode current collector and including a second anode active material that includes a graphite-based active material and composite particles, and a first anode active material layer disposed between the anode current collector and the second anode active material layer and including a first anode active material that includes a graphite-based active material and does not include the composite particles. Each of the composite particles includes a carbon-based particle including pores, a silicon-containing coating layer disposed on an inside of the pores of the carbon-based particle or on a surface of the carbon-based particle, and a surface oxide layer disposed on the silicon-containing coating layer and including a silicon oxide.
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8.发明公开公开(公告)号：US20230231101A1
公开(公告)日：2023-07-20
申请号：US18156192
申请日：2023-01-18
申请人： SK ON CO., LTD.
发明人： Kwang Ho JEONG , Sung Do KIM , Jae Kyu JIN
IPC分类号： H01M4/04 , H01M4/38 , H01M4/62 , H01M4/36 , H01M10/052
CPC分类号： H01M4/0416 , H01M4/0435 , H01M4/386 , H01M4/622 , H01M4/364 , H01M10/052 , H01M4/0404 , H01M2004/021
摘要： A method of manufacturing a negative electrode includes styrene butadiene rubber on at least one surface of a negative electrode current collector, applying a second slurry including a negative electrode active material and a polyacrylic acid-based binder onto the first slurry, and drying and rolling the negative electrode current collector to which the first slurry and the second slurry are applied. The negative electrode active material includes a silicon-based negative electrode active material. According to the present disclosure, expansion and contraction of a silicon-based negative electrode active material during charging and discharging may be alleviated, and electrode flexibility may be improved, resulting in a significant improvement in lifespan properties of a secondary battery.
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9.发明公开公开(公告)号：US20230163283A1
公开(公告)日：2023-05-25
申请号：US17989995
申请日：2022-11-18
申请人： SK ON CO., LTD.
发明人： Kwang Ho JEONG , Sung Do KIM
CPC分类号： H01M4/386 , H01M4/0404 , H01M4/622 , H01M10/052 , H01M4/583 , H01M4/48
摘要： An anode for a lithium secondary battery according to an embodiment of the present invention includes an anode current collector, a primer layer formed on a surface of the anode current collector, and an anode active material layer including a first anode active material layer and a second anode active material layer sequentially disposed on the primer layer. Each of the first anode active material layer and the second anode active material layer includes a silicon-based active material. A ratio of a content of the silicon-based active material in the second anode active material layer relative to a content of the silicon-based active material in the first anode active material layer among a total content of the silicon-based active material included in the anode active material layer is greater than 1.25 and less than 5.
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公开(公告)号：US20230125607A1
公开(公告)日：2023-04-27
申请号：US17971446
申请日：2022-10-21
申请人： SK ON CO., LTD.
发明人： Sung Do KIM , Kwang Ho JEONG
摘要： A negative electrode includes a negative electrode current collector and a negative electrode mixture layer provided on at least one surface of the negative electrode current collector. The negative electrode mixture layer includes a negative electrode active material, a binder, and an additive containing a conductive polymer and a template compound. The conductive polymer included in the negative electrode may lower resistance of the electrode by providing an electron movement path for the negative electrode active material and the conductive material of the negative electrode. Stable electrical conductivity may be maintained while significantly reducing the content of conductive materials such as carbon black and carbon nanotubes, thereby improving lifespan characteristics of the secondary battery.
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