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Method for manufacturing fuel-cell membrane electrode assembly

A technology of fuel cells and manufacturing methods, applied in the direction of fuel cells, bonding methods, film/sheet-shaped adhesives, etc., can solve problems such as reduced production efficiency, achieve improved manufacturing efficiency, prevent deformation and wrinkling, and achieve the desired effect significant effect

Inactive Publication Date: 2016-06-01
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that production efficiency decreases when attempting to assemble fragile members made of carbon such as gas diffusion electrodes without damage.

Method used

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  • Method for manufacturing fuel-cell membrane electrode assembly
  • Method for manufacturing fuel-cell membrane electrode assembly
  • Method for manufacturing fuel-cell membrane electrode assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0212] (Preparation of material for adhesive layer formation)

[0213] Put methacrylic acid into the experimental apparatus for polymerization equipped with a 1L round-bottom detachable flask, detachable hood, separatory funnel, thermometer, nitrogen gas introduction tube, Liebig condenser, vacuum seal, stirring rod, and stirring blades 100 parts by weight of lauryl ester (manufactured by Kao Corporation, trade name "EXCEPARLL-MA"), 10.2 parts by weight of 2-hydroxyethyl methacrylate (manufactured by Mitsubishi Rayon Corporation, trade name "ACRYESTERHO"), As a polymerization initiator, 0.22 parts by weight of 2,2'-azobisisobutyronitrile (manufactured by Kishida Chemical Co., Ltd.) and 55 parts by weight of toluene were used to prepare a mixture.

[0214] While stirring the mixture, the inside of the round-bottomed separable flask was replaced with nitrogen at normal temperature. Then, the mixture was stirred at a temperature of 60° C.±2° C. for 12 hours while flowing nitroge...

Embodiment 2

[0226] Put methacrylic acid into the experimental apparatus for polymerization equipped with a 1L round-bottom detachable flask, detachable hood, separatory funnel, thermometer, nitrogen gas introduction tube, Liebig condenser, vacuum seal, stirring rod, and stirring blades 100 parts by weight of lauryl ester (manufactured by Kao Corporation, trade name "EXCEPARLL-MA"), 12.6 parts by weight of 2-hydroxyethyl methacrylate (manufactured by Mitsubishi Rayon Corporation, trade name "ACRYESTERHO"), As a polymerization initiator, 0.23 parts by weight of 2,2'-azobisisobutyronitrile (manufactured by Kishida Chemical Co., Ltd.) and 56 parts by weight of toluene were used to prepare a mixture.

[0227] While stirring the mixture, the inside of the round-bottomed separable flask was replaced with nitrogen at normal temperature. Then, the mixture was stirred at a temperature of 60° C.±2° C. for 12 hours while flowing nitrogen gas, to obtain an intermediate composition containing a methacr...

Embodiment 3

[0235] A pressure-sensitive adhesive sheet A was obtained in the same manner as in Example 1.

[0236] (Evaluation)

[0237] In place of the polymer electrolyte membrane (manufactured by Dupon, trade name "Nafion212CS"), carbon paper (manufactured by SGL Carbon, trade name "10AA") was used as a gas diffusion electrode, and the process was carried out in the same manner as in Example 1. Evaluation corresponding to the step of peeling the pressure-sensitive adhesive sheet.

[0238] As a result, it was confirmed that the carbon paper did not peel off due to its own weight before the ultraviolet irradiation, but it was confirmed that the carbon paper peeled off due to its own weight after the ultraviolet irradiation.

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Abstract

This invention provides a method for manufacturing a fuel-cell membrane electrode assembly. Said method makes it easy to handle a polymer electrolyte membrane, prevents deformation and wrinkling of said polymer electrolyte membrane, and allows efficient assembly of said polymer electrolyte membrane, a gas diffusion electrode, and / or a gas diffusion layer. This method for manufacturing a fuel-cell membrane electrode assembly containing a first gas diffusion electrode, a polymer electrolyte membrane, and a second gas diffusion electrode includes the following: conveying the polymer electrolyte membrane, the first gas diffusion electrode, and / or the second gas diffusion electrode by adhering same to a pressure-sensitive adhesive sheet that loses adhesiveness upon an external stimulus; and detaching the pressure-sensitive adhesive sheet by applying said external stimulus thereto so as to reduce the adhesiveness thereof.

Description

technical field [0001] The present invention relates to a method for producing a fuel cell membrane / electrode complex. Background technique [0002] Generally, a membrane / electrode assembly (MEA), which is a component of a fuel cell, is a laminate formed of a polymer electrolyte membrane, a gas diffusion electrode, and the like. From the viewpoints of production efficiency and production cost, etc., the membrane / electrode complex of such a laminate structure needs to be laminated and manufactured by a continuous method. As a continuous production method, the following method is known: a method of forming a catalyst layer by coating on both sides of a long polymer electrolyte membrane and laminating a gas diffusion layer on the catalyst layer; A method of laminating a gas diffusion electrode having a catalyst layer on both sides of a polymer electrolyte membrane. The catalyst layer formed on a sheet made of polytetrafluoroethylene or the like is transferred to the polymer el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J5/00C09J7/00C09J201/00H01M8/1004
CPCB32B7/12B32B2457/18C09J5/00C09J2203/33C09J2475/00C09J7/243C09J7/385H01M8/1004Y02E60/50Y02P70/50B32B37/12B32B43/006H01M8/0276H01M2008/1095
Inventor 仲野武史佐藤司正木敏明西井弘行松村健有满幸生
Owner NITTO DENKO CORP
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