公开(公告)号：US10734650B2

公开(公告)日：2020-08-04

申请号：US15770866

申请日：2016-10-27

Applicant: KURARAY CO., LTD.

Inventor： Tomohiro Kawakami ,  Sayaka Ide ,  Takafumi Izawa ,  Taketoshi Okuno ,  Jun-Sang Cho ,  Hideharu Iwasaki

IPC: H01M4/13 ,  H01M4/587 ,  C01B32/05 ,  H01M10/0525 ,  H01M4/02

Abstract: Provided is a carbonaceous material used in a negative electrode of a non-aqueous electrolyte secondary battery that shows favorable charge/discharge capacities and low resistance and having favorable resistance to oxidative degradation. The carbonaceous material has an average interplanar spacing d002 of the (002) plane of 0.36 to 0.42 nm calculated by using the Bragg equation according to a wide-angle X-ray diffraction method, a specific surface area of 20 to 65 m2/g obtained by a nitrogen adsorption BET three-point method, a nitrogen element content of 0.3 mass % or less, an oxygen element content of 2.5 mass % or less, and an average particle diameter of 1 to 4 μm according to a laser scattering method.

公开(公告)号：US11355755B2

公开(公告)日：2022-06-07

申请号：US15770767

申请日：2016-10-27

Applicant: KURARAY CO., LTD.

Inventor： Tomohiro Kawakami ,  Takafumi Izawa ,  Taketoshi Okuno ,  Jun-Sang Cho ,  Hideharu Iwasaki

IPC: H01M4/583 ,  H01M4/587 ,  C01B32/05 ,  H01M4/133 ,  H01M10/0525 ,  H01M4/02

Abstract: A carbonaceous material for a non-aqueous electrolyte secondary battery, having an average interplanar spacing d002 of the (002) plane within a range of 0.36 to 0.42 nm calculated by using the Bragg equation according to a wide-angle X-ray diffraction method, a specific surface area within a range of 8 to 30 m2/g obtained by a nitrogen adsorption BET three-point method, a nitrogen element content of 0.5 mass % or less, an oxygen element content of 0.3 mass % or less, and an average particle diameter of 1 to 2.8 μm according to a laser scattering method.

公开(公告)号：US10720646B2

公开(公告)日：2020-07-21

申请号：US15750632

申请日：2016-08-09

Applicant: Kuraray Co., Ltd.

Inventor： Yuki Ohta ,  Toshimitsu Tanaka ,  Junji Fujioka ,  Jun-Sang Cho ,  Hideharu Iwasaki

IPC: H01M4/62 ,  C08L23/02 ,  C08L35/02 ,  C08K5/17 ,  H01M4/13 ,  C08K3/20 ,  H01M4/139 ,  C08L23/26 ,  H01M4/02

Abstract: The present invention pertains to: a non aqueous electrolyte battery binder composition containing a polyamine and a neutralized salt of an α-olefin-maleic acid copolymer obtained through copolymerization of an α-olefin and maleic acid; and a non aqueous electrolyte battery slurry composition, a non aqueous electrolyte battery negative electrode, and a non aqueous electrolyte battery, etc., using the non aqueous electrolyte battery binder composition.