公开(公告)号：US20210408544A1

公开(公告)日：2021-12-30

申请号：US17294096

申请日：2019-11-21

Applicant: SEKISUI CHEMICAL CO., LTD.

Inventor： Ren-de SUN ,  Hiroji FUKUI ,  Akira NAKASUGA ,  Yuuki SAWADA

IPC: H01M4/62 ,  H01M4/36 ,  H01M4/505 ,  H01M4/38 ,  H01M10/0525

Abstract: The present invention provides an active material for all-solid-state batteries that enables production of all-solid-state batteries having excellent battery characteristics. The present invention also provides an electrode for all-solid-state batteries and an all-solid-state battery each including the active material for all-solid-state batteries. Provided is an active material for all-solid-state batteries, including: an active material; and a coating layer containing amorphous carbon and coating a surface of the active material, the coating layer coating at least part of the surface of the active material.

公开(公告)号：US20210265633A1

公开(公告)日：2021-08-26

申请号：US17252526

申请日：2019-06-19

Applicant: SEKISUI CHEMICAL CO., LTD.

Inventor： Kazuho UCHIDA ,  Akihiko FUJIWARA ,  Hiroki MASUDA ,  Yuuki SAWADA

IPC: H01M4/62 ,  C01B32/182

Abstract: There is provided a carbon material capable of enhancing the capacity of a power storage device and battery characteristics such as rate characteristics and cycle characteristics. The carbon material is one having a graphene layered structure, in which: a BET specific surface area of the carbon material is 1 m2/g or more and 25 m2/g or less; and when a particle concentration of the carbon material and an integrated value of particle areas of the carbon material are measured by a flow-type particle image analyzer using an N-methyl-2-pyrrolidone solution containing 20 ppm of the carbon material, the particle concentration of the carbon material is 3,000 particles/μL or more and 50,000 particles/μL or less, and the integrated value of the particle areas of the carbon material is 1,000 mm2/mg or more and 10,000 mm2/mg or less.

公开(公告)号：US20210184219A1

公开(公告)日：2021-06-17

申请号：US17052681

申请日：2019-04-24

Applicant: SEKISUI CHEMICAL CO., LTD.

Inventor： Yuuki SAWADA ,  Hiroki MASUDA

IPC: H01M4/66 ,  H01M10/0562 ,  H01M6/18

Abstract: A current collector layer for an all-solid-state battery is provided with which a good electron path can be easily formed and rate characteristic can be improved. A current collector layer 5 for an all-solid-state battery 1, the current collector layer 5 including: a carbon material; and a solid electrolyte, the all-solid-state battery 1 including a group 1 or 2 ion conductive solid electrolyte layer 2, the carbon material being mixed with Si at a weight ratio of 1:1 to produce a mixture, the mixture having an X-ray diffraction spectrum having a ratio of a peak height a to a peak height b, a/b, of 0.2 or more and 10.0 or less as being measured, the peak height a being highest in a range of 2θ of 24° or more and less than 28°, and the peak height b being highest in a range of 2θ of 28° or more and less than 30°.