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1.发明公开公开(公告)号：US20240213457A1
公开(公告)日：2024-06-27
申请号：US18535191
申请日：2023-12-11
发明人： Jaewon KIM , Yongseok KIM , Jaehou NAH , Youngugk KIM , Heeyoung CHU , Dae-Hyeok LEE , Hyejin KIM , Sojeong YU
CPC分类号： H01M4/366 , H01M4/133 , H01M4/134 , H01M4/386 , H01M4/587 , H01M10/052 , H01M2004/027
摘要： Disclosed are a negative active material for a rechargeable lithium battery and a rechargeable lithium battery. The negative active material for a rechargeable lithium battery includes a silicon-carbon composite; and graphene on a surface of the silicon-carbon composite, wherein a specific surface area of the negative active material is about 1.6 m2/g to about 2 m2/g.
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2.发明申请公开(公告)号：US20210013493A1
公开(公告)日：2021-01-14
申请号：US16925579
申请日：2020-07-10
发明人： Yungu CHO , Doori OH , Heeyoung CHU , Hyun SOH , Yoonyoung CHOI , Yubin HWANG
IPC分类号： H01M4/36 , H01M4/38 , H01M4/134 , H01M4/133 , H01M10/0525
摘要： A composite anode active material, an anode, and a lithium secondary battery, the composite anode active material including a silicon-carbon composite; a first graphite; and a second graphite that is different from the first graphite, wherein the first graphite has an average particle diameter D50 of about 10 μm or greater, and the second graphite has an average particle diameter D50 of about 18 μm or greater.
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公开(公告)号：US20180069231A1
公开(公告)日：2018-03-08
申请号：US15696779
申请日：2017-09-06
发明人： Jaehyuk KIM , Soonsung SEO , Hana YOO , Heeyoung CHU , Deokhyun KIM , Yungu CHO
IPC分类号： H01M4/134 , H01M10/0525 , H01M4/38 , H01M4/36 , H01M4/1395 , H01M4/04 , H01M4/52 , H01M4/48 , H01M4/485 , H01M4/131
CPC分类号： H01M4/134 , H01M4/043 , H01M4/0433 , H01M4/131 , H01M4/1395 , H01M4/366 , H01M4/386 , H01M4/483 , H01M4/485 , H01M4/52 , H01M10/052 , H01M10/0525
摘要： Provided are a negative active material, an anode and a lithium secondary battery including the same, and a method of preparing the negative active material. The negative active material includes a silicon alloy core including silicon, iron, and manganese, and a shell including a metal oxide on the silicon alloy core, the metal oxide including one or more of titanium, zirconium, aluminum, cobalt, or lithium. An amount of the metal oxide may be from greater than 0 wt % to less than about 12 wt % based on a total weight of the negative active material.
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公开(公告)号：US20240021792A1
公开(公告)日：2024-01-18
申请号：US18355768
申请日：2023-07-20
发明人： Deokhyun KIM , Jaehyuk KIM , Jaemyung KIM , Soonsung SUH , Hana YOO , Yungu CHO , Heeyoung CHU
摘要： Anode active materials for lithium secondary batteries are provided. According to embodiments of the present disclosure, an anode active material includes: i) a first composite including at least two active silicon materials having different crystal sizes and a silicon oxide (SiOx) material (wherein 0
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公开(公告)号：US20230361275A1
公开(公告)日：2023-11-09
申请号：US18012470
申请日：2021-11-15
发明人： Dae-Hyeok LEE , Youngugk KIM , Jaemyung KIM , Jaehou NAH , Changsu SHIN , Chul YOUM , Jongmin WON , Jungho LEE , Heeyoung CHU
IPC分类号： H01M4/36 , H01M4/38 , H01M4/587 , H01M10/052
CPC分类号： H01M4/364 , H01M4/386 , H01M4/587 , H01M10/052 , H01M2004/021
摘要： Provides are an anode active material for a lithium secondary battery and a lithium secondary battery comprising same, wherein the anode active material for a lithium secondary battery comprises a silicon-carbon composite having a void in the central portion, the radius of the central portion corresponds to 30% to 50% of the radius of the anode active material for a lithium secondary battery, and the silicon-carbon composite includes silicon nanoparticles and amorphous carbon.
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公开(公告)号：US20220020980A1
公开(公告)日：2022-01-20
申请号：US17375365
申请日：2021-07-14
发明人： Changsu SHIN , Heeyoung CHU , Youngugk KIM , Jaemyung KIM , Chul YOUM , Jongmin WON , Dae-Hyeok LEE , Jungho LEE
IPC分类号： H01M4/36 , H01M4/485 , H01M4/38 , H01M10/0525 , H01M4/62
摘要： A negative active material for a rechargeable lithium battery, a negative electrode, and a rechargeable lithium battery including the same, the negative active material including a core including silicon nanoparticles and a lithium titanium-based oxide; and an amorphous carbon layer on a surface of the core.
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公开(公告)号：US20180316001A1
公开(公告)日：2018-11-01
申请号：US15963873
申请日：2018-04-26
发明人： Deokhyun KIM , Jaehyuk KIM , Jaemyung KIM , Soonsung SUH , Hana YOO , Yungu CHO , Heeyoung CHU
IPC分类号： H01M4/36 , H01M10/0525 , H01M4/38 , H01M4/48 , H01M4/62
摘要： Anode active materials for lithium secondary batteries are provided. According to embodiments of the present disclosure, an anode active material includes: i) a first composite including at least two active silicon materials having different crystal sizes and a silicon oxide (SiOx) material (wherein 0
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