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公开(公告)号：US10923715B2
公开(公告)日：2021-02-16
申请号：US16212255
申请日：2018-12-06
发明人： Jee Hee Lee , Joon Sup Kim , Nam Hyung Kim , Yeong Uk Son , Yoon Kwang Lee , Jae Phil Cho
IPC分类号： H01M4/36 , H01M4/38 , H01M4/587 , H01M10/0525 , H01M4/1395 , H01M4/134 , H01M4/1393 , H01M4/133 , H01M4/04 , H01M4/02
摘要： Provided are an anode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery containing the same. The present invention provides an anode active material for a lithium secondary battery including: a carbon based particle; a first carbon coating layer positioned on the carbon based particle and including pores; a silicon coating layer positioned on the pores and/or a pore-free surface of the first carbon coating layer; and second carbon coating layer positioned on the silicon coating layer, a method of preparing the same, and a lithium secondary battery containing the same.
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公开(公告)号：US20220093964A1
公开(公告)日：2022-03-24
申请号：US17540036
申请日：2021-12-01
发明人： Jee Hee Lee , Sang Jin Kim , Joon Sup Kim , Nam Hyung Kim , Yoon Kwang Lee , Jae Phil Cho
IPC分类号： H01M10/0525 , H01M4/133 , H01M10/04 , H01M4/38 , H01M4/587 , H01M4/36 , H01M4/1395 , H01M4/04
摘要： Provided are an anode active material for a lithium secondary battery, a manufacturing method thereof, and a lithium secondary battery including the same, the anode active material for a lithium secondary battery including: a carbon-based particle; a composite layer positioned on the carbon-based particle and including a silicon particle dispersed in a carbon matrix; and a carbon coating layer positioned on the composite layer.
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公开(公告)号：US11824195B2
公开(公告)日：2023-11-21
申请号：US16793799
申请日：2020-02-18
发明人： Joon Sup Kim , Jee Hee Lee , Nam Hyeong Kim , Jae Kyung Sung , Tae Yong Lee , Jae Phil Cho
CPC分类号： H01M4/587 , H01M4/364 , H01M4/366 , H01M4/386 , H01M4/58 , H01M10/052 , H01M2004/021 , H01M2004/027
摘要： Provided is a negative electrode active material for a lithium secondary battery according to the present invention, including a carbon-based particle including pores in an inner portion and/or a surface thereof; and a silicon-based coating layer positioned on a pore surface and/or a pore-free surface of the carbon-based particle and containing silicon carbon compound.
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4.发明申请公开(公告)号：US20220263081A1
公开(公告)日：2022-08-18
申请号：US17495876
申请日：2021-10-07
发明人： Ju Ho Chung , Gwi Ok Park , Joon Sup Kim , Eun Jun Park , Dong Il Jang
IPC分类号： H01M4/38 , H01M10/0525 , H01M4/583 , H01M4/04
摘要： Provided is a lithium secondary battery including a silicon-based anode active material for a lithium secondary battery and an anode formed using the same. The silicon-based anode active material for a lithium secondary battery according to exemplary embodiments includes a surface coated with carbon and doped with lithium. A ratio of a peak area at 102.5 eV to a total area of a peak area at 100 eV, the peak area at 102.5 eV, and a peak area at 104 eV, which appear in an Si2p spectrum when measuring by X-ray photoelectron spectroscopy (XPS), is 40% or less, thereby allowing an electrode to be stably manufactured without changing physical properties of the slurry during manufacturing the electrode. In addition, the anode active material for a secondary battery may be usefully used to manufacture a lithium secondary battery having high discharge capacity and high energy density characteristics.
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公开(公告)号：US20220263071A1
公开(公告)日：2022-08-18
申请号：US17494884
申请日：2021-10-06
发明人： Gwi Ok Park , Ju Ho Chung , Joon Sup Kim , Eun Jun Park , Dong Il Jang
IPC分类号： H01M4/36 , H01M4/48 , H01M4/587 , H01M10/0525
摘要： According to embodiments of the present invention, there is provided an anode active material for a lithium secondary battery including a silicon oxide which includes a carbon coating layer on a surface thereof and is doped with magnesium. A ratio of peak area at 1303 eV to a sum of a peak area at 1304.5 eV and a peak area at 1303 eV, which appear in a Mg1s spectrum when measuring by X-ray photoelectron spectroscopy (XPS), is 60% or less.
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公开(公告)号：US20220123290A1
公开(公告)日：2022-04-21
申请号：US17506908
申请日：2021-10-21
发明人： Ju Ho Chung , Joon Sup Kim , Gwi Ok Park , Eun Jun Park , Kyeong Hyeon Kang , Joon Hyung Moon
摘要： An anode composition for a lithium secondary battery according to an embodiment of the present invention includes a metal-doped silicon oxide (SiOx, 0
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7.发明申请公开(公告)号：US20220149358A1
公开(公告)日：2022-05-12
申请号：US17524430
申请日：2021-11-11
发明人： Joon Hyung Moon , Gwi Ok Park , Eun Jun Park , Joon Sup Kim , Seok Keun Yoo , Ju Ho Chung
摘要： Provided is a negative electrode active material for a lithium secondary battery including a core-shell composite including: a core including a silicon oxide (SiOx, 0
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公开(公告)号：US20220310985A1
公开(公告)日：2022-09-29
申请号：US17602452
申请日：2020-04-01
发明人： Eunjun Park , Joon Sup Kim , Gwiok Park , Jeehee Lee
IPC分类号： H01M4/04 , H01M4/134 , H01M4/1395 , H01M10/0525
摘要： The present invention relates to a lithium secondary battery having excellent lifespan characteristics by including a negative electrode improved in protection against degradation due to volume expansion of a negative electrode active material at the time of charging and discharging the lithium secondary battery, and a method of manufacturing the same.
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公开(公告)号：US20210050595A1
公开(公告)日：2021-02-18
申请号：US16992592
申请日：2020-08-13
发明人： Joon Sup Kim , Sun Young Kim , Dong Gun Lee , Jee Hee Lee
IPC分类号： H01M4/62 , H01M4/133 , H01M4/134 , H01M4/36 , H01M4/38 , H01M4/587 , H01M10/0525 , C08G61/04
摘要： A binder for a secondary battery includes a copolymer having a first repeating unit, a second repeating unit, and a third repeating unit. A ratio of a number of the first repeating unit (A) and a sum of a number of the second repeating unit and a number of the third repeating unit (B) is 90:10 to 52:48. A ratio of the number of the second repeating unit and the number of the third repeating unit is 67:33 to 1:99. A weight average molecular weight of the copolymer is 225,000 to 2,000,000.
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