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公开(公告)号：US20240347730A1
公开(公告)日：2024-10-17
申请号：US18487897
申请日：2023-10-16
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Narae KIM , Yurim CHA , Seyoung OH , Deok-Hyun KIM , Chungku YEO
IPC: H01M4/587 , C01B32/21 , H01M4/133 , H01M10/052
CPC classification number: H01M4/587 , C01B32/21 , H01M4/133 , H01M4/1393 , H01M10/052 , C01B2204/22 , C01P2002/74 , C01P2004/03 , C01P2004/50 , C01P2004/61 , C01P2004/62 , C01P2006/40 , H01M2004/027
Abstract: A negative active material and a rechargeable lithium battery including the same are provided. The negative active material includes (e.g., consists of) an amorphous carbon material, low crystalline graphite particles and pores within the amorphous carbon material and/or the low crystalline graphite particles, wherein a ratio of a cross-sectional area of the pores relative to a cross-sectional area of the negative active material is about 4% to about 10%.
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2.发明公开公开(公告)号：US20230307607A1
公开(公告)日：2023-09-28
申请号：US18326895
申请日：2023-05-31
Applicant: Samsung SDI Co., Ltd.
Inventor： Ji Woo AHN , Dongwoo KIM , Jaehou NAH , Bumjin CHANG , Yurim CHA , Yeonjoo CHOI , Ilyoung CHOI
Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed, and the negative active material includes a primary particle of a crystalline carbon-based material and secondary particle that is an assembly of the primary particles, wherein a ratio of an average particle diameter (D50) of the secondary particle relative to an average particle diameter (D50) of the primary particle (average particle diameter (D50) of the secondary particle/average particle diameter (D50) of the primary particle) ranges from about 1.5 to about 5 and an aspect ratio of the primary particle ranges from about 1 to about 7.
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Patent Agency Ranking
公开(公告)号：US20240379959A1
公开(公告)日：2024-11-14
申请号：US18386322
申请日：2023-11-02
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Hee Seon CHOI , Deok-Hyun KIM , Yurim CHA , Narae KIM
IPC: H01M4/587 , H01M4/36 , H01M10/0525
Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery that includes the negative active material. The negative active material includes a first active material, which includes tertiary particles of natural graphite in which secondary particles are agglomerated. Primary particles are agglomerated and spheroidized in the secondary particles. Artificial graphite is positioned on a surface of the primary particles and a surface of the secondary particles. An amorphous carbon coating layer surrounds the tertiary particles of natural graphite. Further, the negative active material includes a second active material, which includes a carbon-based material having an aspect ratio of about 2 to about 100.
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4.发明申请公开(公告)号：US20190386297A1
公开(公告)日：2019-12-19
申请号：US16437803
申请日：2019-06-11
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Joongho MOON , Eunji KANG , Yurim CHA , Soonbong CHOI
IPC: H01M4/36 , H01M4/583 , H01M4/60 , H01M10/0525
Abstract: A negative active material for a rechargeable lithium battery includes: a core including crystalline carbon; and a metal alkoxide on a surface of the core. A rechargeable lithium battery includes: a negative electrode including a negative active material including a core including crystalline carbon, and a metal alkoxide on a surface of the core; a positive electrode including a positive active material; and an electrolyte.
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5.发明公开公开(公告)号：US20240250243A1
公开(公告)日：2024-07-25
申请号：US18397047
申请日：2023-12-27
Applicant: Samsung SDI Co., Ltd.
Inventor： Narae KIM , Deok-Hyun KIM , Hee Seon CHOI , Yurim CHA
IPC: H01M4/36 , H01M4/587 , H01M10/0525
CPC classification number: H01M4/366 , H01M4/587 , H01M10/0525 , H01M2004/027
Abstract: A negative active material for a rechargeable lithium battery, including tertiary particles including graphite and an agglomerated product where secondary particles where g a plurality of primary particles is agglomerated and spheroidized, are agglomerated, and an amorphous carbon coating layer surrounding the tertiary particles.
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公开(公告)号：US20240243260A1
公开(公告)日：2024-07-18
申请号：US18380349
申请日：2023-10-16
Applicant: SAMSUNG SDI CO., LTD.
Inventor： Seyoung OH , Yurim CHA , Yungu CHO , Eunji KANG
CPC classification number: H01M4/366 , H01M4/0404 , H01M4/386 , H01M4/583 , H01M4/625 , H01M10/0525 , H01M2004/027
Abstract: A negative electrode active material composite, a method of manufacturing the same, a negative electrode including the same, and a rechargeable lithium battery, the negative electrode active material composite includes secondary particles in which artificial graphite primary particles are assembled; and a conductive material in internal gaps of the secondary particles; wherein at least some of the artificial graphite primary particles include an amorphous carbon coating layer on a surface thereof.
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7.发明申请公开(公告)号：US20190229325A1
公开(公告)日：2019-07-25
申请号：US16312972
申请日：2017-07-10
Applicant: Samsung SDI Co., Ltd.
Inventor： Ji Woo AHN , Dongwoo KIM , Jaehou NAH , Bumjin CHANG , Yurim CHA , Yeonjoo CHOI , Ilyoung CHOI
Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed, and the negative active material includes a primary particle of a crystalline carbon-based material and secondary particle that is an assembly of the primary particles, wherein a ratio of an average particle diameter (D50) of the secondary particle relative to an average particle diameter (D50) of the primary particle (average particle diameter (D50) of the secondary particle/average particle diameter (D50) of the primary particle) ranges from about 1.5 to about 5 and an aspect ratio of the primary particle ranges from about 1 to about 7.
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