公开(公告)号：US20210344048A1

公开(公告)日：2021-11-04

申请号：US17272652

申请日：2019-09-12

Applicant: ZEON CORPORATION

Inventor： Masanobu SATO ,  Hiroshi KOGA ,  Masuhiro ONISHI ,  Koji ANNAKA

IPC: H01M10/0585 ,  H01M10/0525 ,  H01M50/209

Abstract: Provided is a laminate for a secondary battery in which separator curling up is inhibited. A method of producing a laminate for a secondary battery includes: a step (A) of producing an affixed body including a negative electrode material and separator webs affixed to both surfaces of the negative electrode material or an affixed body including a negative electrode material, a first separator web, a positive electrode, and a second separator web affixed in stated order; and a step (B) of cutting the affixed body. The step (A) includes a step (a1) of applying an adhesive material at affixing surfaces of the negative electrode material and the separator webs. The adhesive material is applied in the step (a1) such that a first coated section including a region where the adhesive material is applied with a coating weight M1 and a second coated section including a region where the adhesive material is applied with a coating weight M2 (≥M1+0.02 g/m2) are located alternately in a longitudinal direction. The affixed body is cut within a range where the second coated section is located in the step (B). The positive electrode is located at a position opposite the first coated section.

公开(公告)号：US20210218009A1

公开(公告)日：2021-07-15

申请号：US17254297

申请日：2019-07-23

Applicant: ZEON CORPORATION

Inventor： Masuhiro ONISHI ,  Masanobu SATO ,  Hiroshi KOGA

IPC: H01M4/04 ,  H01M4/62 ,  H01M4/139

Abstract: Provided is a technique relating to a slurry for a non-aqueous secondary battery that can stably be applied onto a battery member surface even in a situation in which an inkjet method is adopted. A method of producing the slurry for a non-aqueous secondary battery includes a degassing step of reducing the dissolved carbon dioxide gas concentration of a mixture containing a particulate polymer (A) and water.

公开(公告)号：US20230006262A1

公开(公告)日：2023-01-05

申请号：US17757097

申请日：2020-12-15

Applicant: ZEON CORPORATION

Inventor： Yutaka MARUHASHI ,  Masuhiro ONISHI

IPC: H01M10/0587 ,  H01M10/0525 ,  H01M50/121

Abstract: A secondary battery includes a laminate in which a positive electrode, a separator, and a negative electrode are stacked in stated order. Resistance A per unit area of a central region P that has a similar shape to a shape of a surface Z that is either or both of an affixing surface X of the positive electrode and the separator and an affixing surface Y of the negative electrode and the separator, that has a center at the same position as a center of the surface Z, and that has an area equivalent to 10% of area of the surface Z is larger than resistance B per unit area of a region Q other than the central region P at the surface Z.