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公开(公告)号：US20230178718A1
公开(公告)日：2023-06-08
申请号：US18071696
申请日：2022-11-30
申请人： SK On Co., Ltd.
发明人： Eun Jun PARK , Sang Hye SHIN , Joon Hyung MOON , Myoung Lae KIM , Dong Wook HA
IPC分类号： H01M4/36 , H01M4/62 , H01M4/04 , H01M10/052 , H01M4/58
CPC分类号： H01M4/366 , H01M4/625 , H01M4/0471 , H01M10/052 , H01M4/5825 , H01M2004/027
摘要： An anode active material for a lithium secondary battery is provided which includes a composite including: a silicon-based material including a lithium silicate; and a lithium-containing phosphate, wherein a peak intensity ratio B/A is 0.01 to 0.5, wherein A is a peak intensity at 2θ=28.5°, and B is a peak intensity at 2θ=22.3°, when an X-ray diffraction (XRD) analysis is performed using a Cu—Kα ray.
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公开(公告)号：US20230411606A1
公开(公告)日：2023-12-21
申请号：US18333806
申请日：2023-06-13
发明人： Joon Hyung MOON , Eun Jun PARK , Jung Hyun YUN , Ju Ho CHUNG
CPC分类号： H01M4/366 , H01M4/583 , H01M4/386 , H01M4/625 , H01M10/052 , H01M4/0471 , H01M2004/027
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 one or more pores therein, and a silicon-containing coating formed inside the pores and/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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3.发明公开公开(公告)号：US20230402586A1
公开(公告)日：2023-12-14
申请号：US18194508
申请日：2023-03-31
申请人： SK ON CO., LTD.
发明人： Joon Hyung MOON , Eun Jun PARK , Ju Ho CHUNG
CPC分类号： H01M4/366 , H01M4/5825 , H01M4/485 , H01M4/364 , H01M2004/027 , H01M4/625 , H01M4/0471 , H01M10/052 , H01M4/602
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 (SiOx, 0
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4.发明公开公开(公告)号：US20240282962A1
公开(公告)日：2024-08-22
申请号：US18581825
申请日：2024-02-20
申请人： SK ON CO., LTD.
发明人： Nak Won KIM , Joon Hyung MOON , Eun Jun PARK , Ju Ho CHUNG
CPC分类号： H01M4/5825 , C01B33/32 , H01M4/0471 , H01M4/366 , H01M4/625 , C01P2002/85 , C01P2006/40 , H01M2004/028
摘要： An anode active material for a secondary battery according to an embodiment includes comprising a lithium-silicon oxide particle that contains Li2Si2O5 and has a phase fraction ratio of 1.0 or less. A content of lithium elements on a surface of the lithium-silicon oxide particle measured through an X-ray photoelectron spectroscopy (XPS) analysis based on the total number of atoms on the surface of the lithium-silicon oxide particle measured through the XPS analysis is 10 atomic % or less.
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公开(公告)号：US20240116765A1
公开(公告)日：2024-04-11
申请号：US18481753
申请日：2023-10-05
发明人： Eun Jun PARK , Sang Hye SHIN , Nak Won KIM , Joon Hyung MOON , Jung Hyun YUN
IPC分类号： C01B33/187 , H01M10/052
CPC分类号： C01B33/187 , H01M10/052 , C01P2002/74 , C01P2002/82 , C01P2006/40
摘要： Silicon oxide-based negative electrode active materials and negative electrodes for a secondary battery are disclosed. In an embodiment, a negative electrode active material for a secondary battery includes a silicon oxide particle including a metal silicate; and a hydrocarbon coating layer on the silicon oxide particle, wherein a peak Pa in a Fourier transform infrared (FT-IR) spectral analysis of the negative electrode active material is detected in a range from 2880 cm−1 to 2950 cm−1 and a peak Pb in a FT-IR spectral analysis of the negative electrode active material is detected in a range from 2800 cm−1 to 2865 cm−1.
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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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7.发明公开公开(公告)号：US20240079557A1
公开(公告)日：2024-03-07
申请号：US18188533
申请日：2023-03-23
发明人： Joon Hyung MOON , Eun Jun PARK , Do Ae YU , Ju Ho CHUNG
CPC分类号： H01M4/364 , C01B33/32 , H01M4/131 , H01M4/5825 , H01M4/587 , H01M4/625 , H01M10/052 , H01M2004/027
摘要： An anode active material for a secondary battery according to an embodiment of the present application includes lithium-silicon composite oxide particle. The lithium-silicon composite oxide particles include at least one selected from the group consisting of Li2SiO3 and Li2Si2O5 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：US20230395800A1
公开(公告)日：2023-12-07
申请号：US18327058
申请日：2023-06-01
申请人： SK ON CO., LTD.
发明人： Eun Jun PARK , Joon Hyung MOON , Ju Ho CHUNG
CPC分类号： H01M4/5825 , C01B33/325 , H01M2004/027
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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9.发明公开公开(公告)号：US20230187621A1
公开(公告)日：2023-06-15
申请号：US18079448
申请日：2022-12-12
申请人： SK ON CO., LTD.
发明人： Joon Hyung MOON , Gwi Ok PARK , Ju Ho CHUNG , Seok Keun YOO
CPC分类号： H01M4/366 , H01M4/0428 , H01M4/386 , H01M4/583 , H01M2004/027
摘要： An anode active material for a secondary battery includes an anode current collector, and an anode active material layer formed on the anode current collector and including carbon-based active material particles and a silicon coating formed on surfaces of the carbon-based active material particles. A surface content of silicon of the anode active material layer measured by an X-ray photoelectric spectroscopy (XPS) is in a range from 3 atom % to 25 atom %. A peak intensity ratio defined as a ratio of a second peak intensity corresponding to a peak intensity at a binding energy in a range from 102 eV to 106 eV relative to a first peak intensity corresponding to a peak intensity at a binding energy in a range from 98 eV to 102 eV is in a range from 0.05 to 1.
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10.发明公开公开(公告)号：US20240304797A1
公开(公告)日：2024-09-12
申请号：US18666390
申请日：2024-05-16
申请人： SK ON CO., LTD.
发明人： Joon Hyung MOON , Eun Jun PARK , Ju Ho CHUNG
CPC分类号： H01M4/366 , H01M4/0471 , H01M4/364 , H01M4/485 , H01M4/5825 , H01M4/602 , H01M4/625 , H01M10/052 , H01M2004/021 , H01M2004/027
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 (SiOx, 0
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