Method of manufacturing formed body for electrode

Patent metadata

Field	Value
Publication number	US-2022123280-A1
Application number	US-202117563093-A
Country	US
Kind code	A1
Filing date	Dec 28, 2021
Priority date	Aug 19, 2019
Publication date	Apr 21, 2022
Grant date	—

Abstract

A method of manufacturing a formed body for an electrode including: a step of jetting an electrode material containing an electrode active material from an outlet toward a surface F A of a first support while relatively moving the outlet jetting the electrode material and the first support in a plane direction of the first support, in which in the step, a contact member having a contact surface F B that is brought into contact with the electrode material is used, and in a case where a wall friction angle between the contact surface F B of the contact member and the electrode material is denoted by θ1, and a wall friction angle between the surface F A of the first support and the electrode material is denoted by θ2, a relationship (1) 1°≤θ1<15° and a relationship (2) 15°≤θ2 are satisfied.

First claim

What is claimed is:

1 . A method of manufacturing a formed body for an electrode comprising:
jetting an electrode material containing an electrode active material from an outlet toward a surface F A of a first support while relatively moving the outlet jetting the electrode material and the first support in a plane direction of the first support, wherein in the jetting, a contact member having a contact surface F B that is brought into contact with the electrode material is used, and in a case where a wall friction angle between the contact surface F B of the contact member and the electrode material is denoted by θ1, and a wall friction angle between the surface F A of the first support and the electrode material is denoted by θ2, the following relationships (1) and (2) are satisfied,
1°≤θ1<15°  (1)

15°≤θ2.  (2)

2 . The method of manufacturing a formed body for an electrode according to claim 1 ,
wherein the wall friction angles θ1 and θ2 satisfy the following relationship (3),
1°≤θ2−θ1≤60°.  (3)

3 . The method of manufacturing a formed body for an electrode according to claim 1 ,
wherein the wall friction angle θ2 satisfies the following relationship (2′),
15°≤θ2≤60°.  (2′)

4 . The method of manufacturing a formed body for an electrode according to claim 1 ,
wherein the contact member is a storage member that has a discharge port as the outlet and is capable of storing the electrode material, and an inner peripheral surface of the discharge port is the contact surface F B of the contact member.

5 . The method of manufacturing a formed body for an electrode according to claim 1 ,
wherein the contact member is a roll member, and an outer peripheral surface of the roll member is the contact surface F B of the contact member.

6 . The method of manufacturing a formed body for an electrode according to claim 1 ,
wherein the contact member is a long second support that constitutes a part of the outlet and is moved while being brought into contact with the jetted electrode material, and a contact surface of the second support that is brought into contact with the electrode material is the contact surface F B of the contact member.

7 . The method of manufacturing a formed body for an electrode according to claim 1 ,
wherein the contact surface F B of the contact member has a contact angle of 75° or more with water.

8 . The method of manufacturing a formed body for an electrode according to claim 1 ,
wherein the surface F A of the first support has a contact angle of 30° or more and less than 75° with water.

9 . The method of manufacturing a formed body for an electrode according to claim 1 ,
wherein the contact surface F B of the contact member has a surface layer containing at least one of a fluorine atom or a silicon atom.

10 . The method of manufacturing a formed body for an electrode according to claim 9 ,
wherein the surface layer further contains an antistatic agent.

11 . The method of manufacturing a formed body for an electrode according to claim 1 ,
wherein the contact surface F B of the contact member has an arithmetic average roughness Ra of 10 μm or less.

12 . The method of manufacturing a formed body for an electrode according to claim 1 ,
wherein the first support is a release material.

Assignees

• Fujifilm Corp

Inventors

• FUKUNAGA Akihito
• Iwase Eijiro
• Tonohara Koji

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• H01M4/139

  Processes of manufacture · CPC title

• H01M4/0433 Primary

  Molding · CPC title

• H01M4/0435

  Rolling or calendering · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title