公开(公告)号：US20180009665A1

公开(公告)日：2018-01-11

申请号：US15546786

申请日：2016-02-08

Applicant: SHOWA DENKO K.K.

Inventor： Naoto KAWAGUCHI ,  Takashi TERASHIMA ,  Yoshikuni SATO ,  Yasuaki WAKIZAKA

IPC: H01M4/587 ,  H01M4/133 ,  H01M4/1393

CPC classification number: C01B32/05 ,  C01B32/20 ,  C01P2002/72 ,  C01P2002/78 ,  C01P2002/82 ,  C01P2004/51 ,  C01P2006/14 ,  C01P2006/16 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587

Abstract: A non-flaky carbon material having specific optical structures, wherein the ratio between the peak intensity I110 of (110) plane and the peak intensity I004 of (004) plane of a graphite crystal determined by the powder XRD measurement, I110/I004, is 0.10 or more and 0.35 or less; an average circularity is 0.80 or more and 0.95 or less; d002 is 0.337 nm or less; and the total pore volume of pores having a diameter of 0.4 μm or less measured by the nitrogen gas adsorption method is 25.0 μl/g or more and 40.0 μl/g or less. Also disclosed is a method for producing the carbon material, a carbon material for a battery electrode, a paste for an electrode incorporating the carbon material for a battery electrode, an electrode for a lithium battery incorporating a formed body of the paste for an electrode, a lithium-ion secondary battery including the electrode and a method for producing the electrode.

公开(公告)号：US20230223537A1

公开(公告)日：2023-07-13

申请号：US17928195

申请日：2021-05-28

Applicant: SHOWA DENKO K.K.

Inventor： Naoto KAWAGUCHI ,  Yuji ITO ,  Masato FUJITA ,  Hirofumi INOUE

IPC: H01M4/587 ,  H01M4/36 ,  H01M4/38 ,  H01M4/62 ,  C01B32/342 ,  C01B32/318 ,  C01B32/372

CPC classification number: H01M4/587 ,  H01M4/366 ,  H01M4/386 ,  H01M4/622 ,  H01M4/625 ,  C01B32/342 ,  C01B32/318 ,  C01B32/372 ,  H01M2004/027

Abstract: The present invention relates to composite particles containing silicon and carbon, wherein a domain size region of vacancies of 2 nm or less is 44% by volume or more and 70% by volume or less when volume distribution information of domain sizes obtained by fitting a small-angle X-ray scattering spectrum of the composite particles with a spherical model in a carbon-vacancy binary system is accumulated in ascending order, and a true density calculated by dry density measurement by a constant volume expansion method using helium gas is 1.80 g/cm3 or more and 2.20 g/cm3 or less.

公开(公告)号：US20170155149A1

公开(公告)日：2017-06-01

申请号：US15314828

申请日：2015-05-25

Applicant: SHOWA DENKO K.K.

Inventor： Naoto KAWAGUCHI ,  Yasuaki WAKIZAKA ,  Yuichi KAMIJO ,  Yoshiki SHIMODAIRA ,  Yoshikuni SATO

IPC: H01M4/587 ,  H01M4/1393 ,  H01M4/133 ,  H01M4/04 ,  H01M10/0525

CPC classification number: H01M4/587 ,  C01B32/00 ,  C01B32/05 ,  C01B32/20 ,  C01P2002/74 ,  C01P2004/02 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/40 ,  H01M4/0409 ,  H01M4/043 ,  H01M4/133 ,  H01M4/1393 ,  H01M10/0525 ,  Y02T10/7011

Abstract: A carbon material, being a not-scaly carbon material having specific optical structures, wherein the ratio between the peak intensity I110 of plane (110) and the peak intensity I004 of plane (004) of a graphite crystal determined by the powder XRD measurement, I110/I004, is 0.1 to 0.6; an average circularity is 0.80 to 0.95; d002 is 0.337 nm or less; and the total pore volume of pores having a diameter of 0.4 μm or less measured by the nitrogen gas adsorption method is 8.0 μl/g to 20.0 μl/g; and a production method of the same.