CN-121986192-A - Sheet-shaped titanium porous body, method for producing same, and use thereof

Abstract

A sheet-shaped titanium porous body is disclosed. The sheet-shaped titanium porous body has a thickness of 40-500 [ mu ] m, and a porosity of 30-50%. The surface roughness of the 1 st main surface of the sheet-shaped titanium porous body is lower than the surface roughness of the 2 nd main surface opposite to the 1 st main surface. The number of 1 st protrusions having a height of 30 [ mu ] m or more protruding from the 1 st main surface at the peripheral edge portion of the sheet-shaped titanium porous body is equal to or less than the number of 2 nd protrusions having a height of 30 [ mu ] m or more protruding from the 2 nd main surface at the peripheral edge portion.

Inventors

• Gou Weihang

Assignees

• 东邦钛株式会社

Dates

Publication Date

20260505

Application Date

20240801

Priority Date

20240129

Claims (16)

1. 1. A sheet-shaped titanium porous body, characterized in that, The sheet-shaped titanium porous body has a thickness of 40-500 [ mu ] m, and a porosity of 30-50%, The surface roughness of the 1 st main surface is lower than the surface roughness of the 2 nd main surface opposite to the 1 st main surface, The number of 1 st protrusions having a height of 30 [ mu ] m or more protruding on the 1 st main surface side of the peripheral edge portion is equal to or less than the number of 2 nd protrusions having a height of 30 [ mu ] m or more protruding on the 2 nd main surface side of the peripheral edge portion.
2. 2. The sheet-shaped titanium porous body according to claim 1, wherein, The maximum value of the height of the 1 st projection and the 2 nd projection is 100 μm or less.
3. 3. The sheet-shaped titanium porous body according to claim 1 or 2, wherein, The number of the 2 nd protrusions is 3.0 or less per 100mm of the peripheral edge portion.
4. 4. The sheet-shaped titanium porous body according to any one of claim 1 to 3, wherein, The 1 st protrusion is not present.
5. 5. The sheet-shaped titanium porous body according to any one of claims 1 to 4, wherein, The corners of the flaky titanium porous body are arc-shaped.
6. 6. The sheet-shaped titanium porous body according to any one of claims 1 to 5, wherein, The peripheral edge portion does not have a bent portion having a height of more than 0.1m bent on the first main surface side or the second main surface side.
7. 7. The sheet-shaped titanium porous body according to any one of claims 1 to 6, wherein, The sheet-shaped titanium porous body is manufactured by cutting a master sheet having an area larger than that of the sheet-shaped titanium porous body using a fiber laser.
8. 8. The use of a sheet-shaped titanium porous body according to any one of claim 1to 7, wherein, The sheet-like titanium porous body serves as a porous transport layer in a polymer electrolyte membrane type water electrolysis apparatus.
9. 9. The use according to claim 8, wherein, The polymer electrolyte membrane type water electrolysis apparatus includes an ion exchange membrane, The ion exchange membrane is disposed so as to be in contact with the 1 st main surface of the sheet-shaped titanium porous body.
10. 10. A process for producing hydrogen, characterized in that, Hydrogen is produced in a polymer electrolyte membrane type water electrolysis apparatus using the sheet-shaped titanium porous body according to any one of claims 1 to 7.
11. 11. A method for producing a sheet-shaped titanium porous body, comprising: Disposing a master sheet containing a titanium porous body on a jig so as to cover at least one through hole and a gap between at least one stage and a frame, wherein the jig includes the at least one stage having the at least one through hole, the frame surrounding and separated from the at least one stage, and at least one connecting portion interconnecting the at least one stage and the frame; adsorbing the master onto the jig, and The master is cut by scanning laser light emitted from a fiber laser over the master along the gap.
12. 12. The manufacturing method according to claim 11, wherein, The upper surface of the at least one connection part is located at the lower surface side of the at least one stage and the frame with respect to the upper surfaces of the at least one stage and the frame.
13. 13. The manufacturing method according to claim 11 or 12, wherein, The at least one stage and the frame comprise pure titanium.
14. 14. The manufacturing method according to any one of claims 11 to 13, wherein, The wavelength of the laser is 1000nm to 1200 nm.
15. 15. The manufacturing method according to any one of claims 11 to 14, wherein, The scanning of the laser is performed under an argon atmosphere.
16. 16. The manufacturing method according to any one of claims 11 to 15, wherein, The porosity of the master is 30% or more and 50% or less.

Description

Sheet-shaped titanium porous body, method for producing same, and use thereof Technical Field One embodiment of the invention relates to a sheet-shaped titanium porous body, a method for producing the same, an application thereof, and a jig for realizing the production method. Background Sheet-shaped metal porous bodies containing a metal (0-valent metal) are widely used in filters, secondary battery electrodes, polymer electrolyte fuel cell collectors, catalyst supports, and the like. According to the use of the sheet-like porous metal body, the porous metal body is cut with a laser, a blade (blade), or the like and then used (see patent documents 1 and 2). Patent document 1 discloses that a pair of blades opposed to each other can cut a long sheet-like metal porous body extending in a specific direction. Patent document 2 discloses that a laminate of a sheet metal porous body and an adjacent layer is cut by laser, and the sheet metal porous body and the side surfaces of the adjacent layer are joined to each other at the laser cut, that is, a laminate of a sheet metal porous body and an adjacent layer is formed. In this method, an icicle-like burr is formed at the laser cut due to the firm bonding between the sheet metal porous body and the adjacent layers, so that an anchor effect is exhibited. In other words, it can be said that the cutting method positively forms burrs. Prior art literature Patent literature Patent document 1 International publication No. 2020/039693 Patent document 2 Japanese patent application laid-open No. 2011-106023 Disclosure of Invention Problems to be solved by the invention One embodiment of the present invention is to provide a sheet-like metal porous body containing titanium, namely, a sheet-like titanium porous body and applications thereof. Or one of the embodiments of the present invention is to provide a method capable of producing a sheet-shaped titanium porous body with high efficiency and high yield, and a jig for implementing the method. Solution for solving the problem One embodiment of the present invention is a sheet-shaped titanium porous body. The sheet-shaped titanium porous body has a thickness of 40-500 [ mu ] m, and a porosity of 30-50%. The surface roughness of the 1 st main surface of the sheet-shaped titanium porous body is lower than the surface roughness of the 2 nd main surface opposite to the 1 st main surface. The number of 1 st protrusions protruding on the 1 st main surface side at the peripheral edge of the sheet-shaped titanium porous body is 30 [ mu ] m or more and the number of 2 nd protrusions protruding on the 2 nd main surface side at the peripheral edge is 30 [ mu ] m or more. One of the embodiments of the present invention is the use of the sheet-shaped titanium porous body as a porous transport layer in a polymer electrolyte membrane type water electrolysis apparatus. One embodiment of the present invention relates to a method for producing hydrogen in a polymer electrolyte membrane type water electrolysis apparatus using the sheet-shaped titanium porous body. One embodiment of the present invention relates to a method for producing a sheet-shaped titanium porous body. The method of manufacturing includes disposing a master including a porous body of titanium on a jig to cover at least one through hole and a gap between at least one stage and a frame, wherein the jig includes at least one stage having the at least one through hole, the frame surrounding and separated from the at least one stage, and at least one connection portion interconnecting the at least one stage and the frame, adsorbing the master on the jig, and cutting the master by scanning laser light emitted from a fiber laser on the master along the gap. One of the embodiments of the present invention is a jig for manufacturing a sheet-shaped titanium porous body. The jig includes at least one stage having at least one through hole, a frame surrounding and separated from the at least one stage, and at least one connection portion connecting the at least one stage and the frame to each other. Drawings Fig. 1 is a schematic view showing a method for producing a sheet-like titanium porous body according to one embodiment of the present invention. Fig. 2A is a schematic plan view of a jig according to one embodiment of the present invention. Fig. 2B is a schematic side view of a clamp according to one embodiment of the present invention. Fig. 3A is a schematic cross-sectional view of a jig according to one embodiment of the present invention. Fig. 3B is a schematic cross-sectional view of a jig according to one embodiment of the present invention. Fig. 3C is a schematic cross-sectional view of a jig according to one embodiment of the present invention. Fig. 3D is a schematic cross-sectional view of a jig according to one embodiment of the present invention. Fig. 4A is a side view of a fixture incorporating one of the embodiments of the present invention. Fig. 4B is a schematic top