Reinforced composite membranes and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-10355299-B2
Application number	US-201615364959-A
Country	US
Kind code	B2
Filing date	Nov 30, 2016
Priority date	Dec 21, 2015
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

Provided are a reinforced composite membrane and a method of manufacturing the reinforced composite membrane, and more particularly, a reinforced composite membrane including a porous support layer; and an electrolyte membrane layer formed on one surface or each of both surfaces of the porous support layer, at least a portion of the porous support layer being impregnated with an electrolyte, and a method of manufacturing the reinforced composite membrane. The reinforced composite membrane may enhance an interfacial adhesive force between a support and the electrolyte membrane layer, and may be manufactured on a continuous mass production.

First claim

What is claimed is:

1. A method of manufacturing a reinforced composite membrane, the method comprising:
manufacturing an electrolyte film that forms an electrolyte membrane on a release film;
disposing the electrolyte film on one surface or each of both surfaces of a porous support; and
transferring the electrolyte membrane of the electrolyte film on one surface or each of both surfaces of the porous support to form a composite membrane,
wherein the transferring is performed through a roll press process at the temperature of 40° C. to 120° C., and
a part of the porous support is impregnated with an electrolyte during the transferring.

2. The method of claim 1 , wherein the electrolyte membrane is formed using an electrolyte solution that includes the electrolyte and a polar solvent, and
the electrolyte is included in the electrolyte solution at the concentration of 5 to 30% (w/v).

3. The method of claim 1 , further comprising:
drying the electrolyte film after manufacturing the electrolyte film,
wherein the drying comprises forming the electrolyte membrane with a thickness of 3 μm to 30 μm at the temperature of 90° C. to 150° C. after removing a solvent at the temperature of 40° C. to 80° C.

4. The method of claim 1 , further comprising:
pretreatmenting the electrolyte film by spraying a polar solvent over the electrolyte film, prior to the disposing of the electrolyte film.

5. The method of claim 1 , further comprising:
pretreatmenting the porous support by immersing the porous support into a polar solution for impregnation, prior to the disposing of the electrolyte film,
wherein the pretreatmenting of the porous support is implemented at a room temperature to 50° C. for 30 minutes to 5 hours.

6. The method of claim 1 , further comprising:
separating the release film from one surface of the composite membrane after the transferring;
disposing the composite membrane to make an electrolyte membrane layer from which the release film is separated contact with one surface or each of both surfaces of the porous support; and
transferring the electrolyte membrane of the composite membrane on one surface or each of both surfaces of the porous support.

7. The method of claim 1 , further comprising:
separating the release film from one surface of the composite membrane after the transferring;
disposing the composite membrane and the electrolyte film to make each of an electrolyte membrane layer from which the release film is separated and the electrolyte membrane of the electrolyte film contact with one surface of the porous support; and
transferring the electrolyte membrane to each of both surfaces of the porous support.

Assignees

• Korea Inst Energy Res

Inventors

• Bae Byungchan
• Lee Hyejin
• Yim Sung-Dae
• Kim Chang-Soo
• Lee Won-Yong
• Park Gu-Gon
• Yang Tae-Hyun
• Park Seok-Hee
• Kim Minjin
• Sohn Young-Jun
• Kim Seung-Gon

Classifications

• H01M2250/20

  Fuel cells in motive systems, e.g. vehicle, ship, plane · CPC title

• Y02T90/32

  Cross-Sectional Technologies · mapped topic

• H01M8/1053

  consisting of layers of polymers with at least one layer being ionically conductive · CPC title

• H01M8/1039

  halogenated, e.g. sulfonated polyvinylidene fluorides · CPC title

• H01M8/1062 Primary

  characterised by the physical properties of the porous support, e.g. its porosity or thickness · CPC title