专利检索 ap:("Eneos Corporation") AND inv:"Takashi Maeda" 第 1 页

1.

发明公开
SYNTHETIC GRAPHITE MATERIAL, SYNTHETIC GRAPHITE MATERIAL PRODUCTION METHOD, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY 审中-公开

公开(公告)号：US20240204191A1

公开(公告)日：2024-06-20

申请号：US18419040

申请日：2024-01-22

申请人： Eneos Corporation

发明人： Takashi SUZUKI , Takashi Maeda , Mitsuo Karakane , Takahiro Shirai , Hiroshi Kawachi , Noriyuki Kiuchi

IPC分类号： H01M4/587 , C01B32/205 , H01M4/02 , H01M10/0525

CPC分类号： H01M4/587 , C01B32/205 , H01M10/0525 , C01P2002/60 , C01P2006/12 , C01P2006/40 , H01M2004/021 , H01M2004/027

摘要： Provided is a synthetic graphite material, in which a size L (112) of a crystallite in a c-axis direction as calculated from a (112) diffraction line obtained by an X-ray wide angle diffraction method is in a range of 4 to 30 nm, a surface area based on a volume as calculated by a laser diffraction type particle size distribution measuring device is in a range of 0.22 to 1.70 m2/cm3, an oil absorption is in a range of 67 to 147 mL/100 g, and a nitrogen adsorption specific surface area is in a range of 3.1 to 8.2 m2/g.

2.

发明授权
Synthetic graphite material, synthetic graphite material production method, negative electrode for lithium ion secondary battery, and lithium ion secondary battery 有权

公开(公告)号：US12043548B2

公开(公告)日：2024-07-23

申请号：US17422978

申请日：2020-01-14

申请人： ENEOS CORPORATION

发明人： Takashi Suzuki , Takashi Maeda , Mitsuo Karakane , Takahiro Shirai , Hiroshi Kawachi , Noriyuki Kiuchi

IPC分类号： C01B32/20 , B01J35/64 , C01B32/205 , C01B32/21 , H01M10/0525

CPC分类号： C01B32/205 , B01J35/647 , C01B32/21 , H01M10/0525 , C01P2004/51 , C01P2006/12

摘要： A synthetic graphite material, in which a size L (112) of a crystallite in a c-axis direction as calculated from a (112) diffraction line obtained by an X-ray wide angle diffraction method is in a range of 4 to 30 nm, a surface area based on a volume as calculated by a laser diffraction type particle size distribution measuring device is in a range of 0.22 to 1.70 m2/cm3, an oil absorption is in a range of 67 to 147 mL/100 g, a spectrum derived from carbon appearing in an electron spin resonance method as measured using an X band is in a range of 3200 to 3410 gauss, and ΔHpp, which is a line width of the spectrum as calculated from a first derivative spectrum of the spectrum at a temperature of 4.8K, is in a range of 41 to 69 gauss.