公开(公告)号：US20230231111A1

公开(公告)日：2023-07-20

申请号：US17927785

申请日：2021-05-28

Applicant: SHOWA DENKO K.K.

Inventor： Takayuki KURITA ,  Kohei AKIMOTO ,  Yuji ITO ,  Hirofumi INOUE ,  Jinseok BAEK

IPC: H01M4/36 ,  H01M4/587 ,  H01M4/38 ,  H01M4/133 ,  H01M10/0525 ,  H01M4/62 ,  C01B32/336 ,  C01B32/318

CPC classification number: H01M4/366 ,  H01M4/587 ,  H01M4/386 ,  H01M4/133 ,  H01M10/0525 ,  H01M4/625 ,  H01M4/622 ,  C01B32/336 ,  C01B32/318 ,  H01M2004/027

Abstract: Composite carbon particles including a porous carbon material and a silicon component, the composite carbon particle having an average aspect ratio of 1.25 or less, and a ratio (ISi/IG) of a peak intensity (ISi) in the vicinity of 470 cm−1 to a peak intensity (IG) in the vicinity of 1580 cm−1 as measured by Raman spectroscopy of 0.30 or less, wherein the porous carbon material satisfies V1/V0>0.80 and V2/V0