公开(公告)号：US20240356161A1

公开(公告)日：2024-10-24

申请号：US18682437

申请日：2022-08-31

Applicant: ZEON CORPORATION

Inventor： Tomofumi YAMADA

IPC: H01M50/46 ,  H01M50/403 ,  H01M50/42 ,  H01M50/443

CPC classification number: H01M50/461 ,  H01M50/403 ,  H01M50/42 ,  H01M50/443

Abstract: Provided is a slurry composition for a non-aqueous secondary battery adhesive layer containing at least two types of particulate polymers, a water-soluble polymer, and a dispersion medium. The at least two types of particulate polymers include a particulate polymer A having a glass-transition temperature of not lower than 30° C. and not higher than 100° C. and a particulate polymer B having a glass-transition temperature of 20° C. or lower. The slurry composition for a non-aqueous secondary battery adhesive layer has a solid content concentration of not less than 1 mass % and not more than 25 mass %.

公开(公告)号：US20240421430A1

公开(公告)日：2024-12-19

申请号：US18701251

申请日：2022-10-19

Applicant: ZEON CORPORATION

Inventor： Tomofumi YAMADA

IPC: H01M50/449 ,  H01M10/0525

Abstract: A slurry composition for a non-aqueous secondary battery functional layer contains a particulate polymer A including a reactive functional group-containing monomer unit and a particulate polymer B. The particulate polymer A has a glass-transition temperature of not lower than 30° C. and not higher than 95° C., the particulate polymer B has a glass-transition temperature of lower than 30° C., and the particulate polymer A has a volume-average particle diameter of not less than 250 nm and not more than 800 nm.

公开(公告)号：US20240027330A1

公开(公告)日：2024-01-25

申请号：US18254868

申请日：2021-11-30

Applicant: ZEON CORPORATION

Inventor： Tomofumi YAMADA

IPC: G01N21/21 ,  H01M50/403

CPC classification number: G01N21/211 ,  H01M50/403 ,  G01N2021/213 ,  G01N2201/061 ,  H01M10/0525

Abstract: It could be helpful to provide an inspection method that can determine the formed amount of an adhesive region on a separator substrate with high accuracy in producing a lithium ion secondary battery separator. The presently disclosed method of inspecting a lithium ion secondary battery separator is a method of inspecting a lithium ion secondary battery separator, in which an adhesive region made of a binder is formed on at least one surface of a separator substrate. This inspection method includes determining a formed amount of the adhesive region by spectroscopic ellipsometry that measures a change in deflection state of reflected light by irradiating the surface of the separator substrate on which the adhesive region is formed with linearly polarized light of white light as incident light.