公开(公告)号：US20230335737A1

公开(公告)日：2023-10-19

申请号：US17777530

申请日：2020-10-22

Applicant: SHOWA DENKO K.K.

Inventor： Yuta KAWAHARA ,  Tomonori KURATA ,  Mitsuru HANASAKI

IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/04

CPC classification number: H01M4/622 ,  H01M10/0525 ,  H01M4/386 ,  H01M4/0404 ,  H01M2004/027

Abstract: The invention is related to a nonaqueous secondary battery electrode having an electrode active material layer with little crack and high peel strength to a current collector, and can reduce the internal resistance of the battery; and an electrode slurry therefor, and a nonaqueous secondary battery. The electrode active material layer of the nonaqueous secondary battery contains an electrode active material (A), a copolymer (P), a nonionic surfactant (B), and a cellulose derivative (C). A content of the nonionic surfactant (B) to 100 parts by mass of the copolymer (P) is 5.0 to 350 parts by mass, and a content of the cellulose derivative (C) is 10 to 350 parts by mass. The copolymer (P) contains a structural unit (p1) derived from a (meth)acrylic acid salt of 50 to 99% by mass and a structural unit (p2) derived from a compound represented by general formula (1) of 0.50 to 30% by mass.

公开(公告)号：US20210027953A1

公开(公告)日：2021-01-28

申请号：US17043331

申请日：2019-03-26

Applicant: SHOWA DENKO K.K.

Inventor： Yuta KAWAHARA ,  Takashi OHKUBO

IPC: H01G9/00 ,  C08L25/14 ,  H01G9/15 ,  H01G9/048 ,  H01G9/025

Abstract: A method of manufacturing a solid electrolytic capacitor including a porous anode body made of a valve metal having a dielectric film on a surface thereof, and a solid electrolyte layer disposed on a surface of the dielectric film. The method including: a step of; in a liquid including a polyanion and an aqueous medium, polymerizing a monomer compound to obtain a dispersion (1) containing a conjugated electrically conductive polymer and subjecting dispersion treatment to the dispersion (1) to obtain a dispersion (2) containing the conjugated electrically conductive polymer; depositing the dispersion (2) to a porous anode body made of a valve metal having a dielectric coating on a surface thereof; and removing the aqueous medium from the dispersion (2) deposited on the porous anode body to form a solid electrolyte layer, wherein an operation which pauses the dispersion treatment is performed.