公开(公告)号：US20230216025A1

公开(公告)日：2023-07-06

申请号：US17927789

申请日：2021-05-28

Applicant: SHOWA DENKO K.K.

Inventor： Akifumi TAKEDA ,  Masato FUJITA ,  Yuji ITO ,  Hirofumi INOUE

IPC: H01M4/36 ,  H01M4/587 ,  H01M4/38 ,  H01M10/0525 ,  H01M4/133 ,  H01M4/134 ,  C01G23/00 ,  C01G33/00 ,  C01B32/25

CPC classification number: H01M4/364 ,  H01M4/587 ,  H01M4/386 ,  H01M10/0525 ,  H01M4/133 ,  H01M4/134 ,  C01G23/005 ,  C01G33/00 ,  C01B32/25

Abstract: An object of the present invention is to provide composite particles capable of suppressing oxidation over time of a Si—C composite material. Composite particles (B) of the present invention contains composite particles (A) containing carbon and silicon; and amorphous layers coating surfaces thereof, where the composite particles (B) have ISi/IG of 0.10 or more and 0.65 or less, and have R value (ID/IG) of 1.00 or more and 1.30 or less, when a peak due to silicon is present at 450 to 495 cm−1, an intensity of the peak is defined as ISi, an intensity of a G band (peak intensity in the vicinity of 1600 cm−1) is defined as IG, and an intensity of a D band (peak intensity in the vicinity of 1360 cm−1) is defined as ID in a Raman spectrum, and where the composite particles (B) have a full width at half maximum of a peak of a 111 plane of Si of 3.0 deg. or more using a Cu-Kα ray in an XRD pattern.

公开(公告)号：US20170331115A1

公开(公告)日：2017-11-16

申请号：US15522420

申请日：2015-10-27

Applicant: SHOWA DENKO K.K.

Inventor： Shunsuke SAITO ,  Akifumi TAKEDA ,  Hitoshi YOKOUCHI

IPC: H01M4/62 ,  C08F14/18 ,  H01M4/04 ,  H01G11/22 ,  H01M10/0525 ,  C07D207/267 ,  H01M8/18

CPC classification number: H01M4/623 ,  C07D207/267 ,  C08F14/185 ,  H01G11/22 ,  H01G11/28 ,  H01G11/68 ,  H01G11/70 ,  H01M4/0404 ,  H01M4/66 ,  H01M4/667 ,  H01M4/668 ,  H01M8/18 ,  H01M8/184 ,  H01M8/188 ,  H01M10/0525 ,  Y02E60/13 ,  Y02E60/528

Abstract: An electrode current collector including a metal foil wherein a coating layer is formed on one or both surfaces of the metal foil, and a contact angle with pure water of the surface of the coating layer at a side opposite to the metal foil side is 30° or more.