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A manufacturing method of membrane electrode assembly, membrane electrode assembly and manufacturing device thereof

A membrane-electrode assembly and a technology for manufacturing methods, which are applied in battery electrodes, final product manufacturing, sealing/supporting devices, etc., can solve the problem of reduced power generation efficiency, increased resistance of gas diffusion layers, deterioration of gas diffusion performance and drainage performance, etc. problem, to achieve the effect of improving power generation efficiency

Active Publication Date: 2008-10-01
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are many kinds of such pads to be prepared, and the types are limited, so sometimes the pads with the optimum thickness may not always be applied.
For example, when the thickness of the liner is small, the gas diffusion layer is excessively crushed, and the gas diffusion performance and drainage performance are deteriorated. When the thickness of the liner is large, the resistance of the gas diffusion layer increases. reduce

Method used

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  • A manufacturing method of membrane electrode assembly, membrane electrode assembly and manufacturing device thereof
  • A manufacturing method of membrane electrode assembly, membrane electrode assembly and manufacturing device thereof
  • A manufacturing method of membrane electrode assembly, membrane electrode assembly and manufacturing device thereof

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no. 2 Embodiment approach

[0065] In terms of compression molding of the backing parts 8A, 8B, the manufacturing apparatus 60 and manufacturing method of the membrane electrode assembly of the second embodiment are different from the manufacturing of the first embodiment of the injection molding or injection thermocompression molding of the backing parts 8A, 8B. The device 20 and method of manufacture are different. In addition, the membrane electrode assembly 1 manufactured in the second embodiment has the same structure as the membrane electrode assembly 1 of the first embodiment.

[0066] 13 is a partial cross-sectional view showing a manufacturing apparatus of a membrane electrode assembly according to a second embodiment. In addition, the same code|symbol is attached|subjected to the part which has the same function as 1st Embodiment, and in order to avoid repetition, the description is abbreviate|omitted.

[0067] The manufacturing device 50 of the membrane electrode assembly according to the sec...

no. 3 Embodiment approach

[0092] The manufacturing apparatus 70 and manufacturing method of the membrane electrode assembly according to the third embodiment are different from those of the first gasket part 8A in terms of performing injection molding or injection thermocompression molding on one gasket part 8A and compression molding the other gasket part 8B. , The manufacturing apparatuses 20 and 50 and the manufacturing method of the second embodiment are different. In addition, the membrane electrode assembly 1 manufactured in the third embodiment has the same structure as the membrane electrode assembly 1 in the first and second embodiments.

[0093] 17 is a partial cross-sectional view showing a manufacturing apparatus of a membrane electrode assembly according to a third embodiment. In addition, the same code|symbol is attached|subjected to the part which has the same function as 1st, 2nd embodiment, and the description is abbreviate|omitted in order to avoid repetition.

[0094] The manufactur...

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Abstract

Disclosed herein is a membrane electrode assembly with a superior power generating efficiency and a method of manufacturing the same. Also disclosed is a manufacturing apparatus thereof wherein a gasket with an optimum thickness can be easily applied to the membrane electrode assembly without preparing various types of gaskets. A method of manufacturing the membrane electrode assembly with catalytic layers and gas diffusion layers on surfaces of the electrolyte membrane comprises controlling a molding thickness according to thicknesses of the catalytic layers and the gas diffusion layers and integrally molding the gasket portions formed with resin materials on at least one surface of the electrolyte membrane.

Description

technical field [0001] The present invention relates to a method of manufacturing a membrane electrode assembly constituting a fuel cell, a membrane electrode assembly, and a manufacturing device thereof. Background technique [0002] Generally, a fuel cell is formed by stacking a membrane electrode assembly provided with a catalyst layer and a gas diffusion layer on both sides of an electrolyte membrane with a separator interposed therebetween. The outer peripheral portion of this membrane electrode assembly is not provided with a catalyst layer and a gas diffusion layer, and the electrolyte membrane is exposed. Here, a resin gasket for sealing between separators is applied (for example, refer to Patent Document 1). The optimum thickness of the liner is determined according to the relationship between the liner and the thickness of the gas diffusion layer. Therefore, when the size of the gas diffusion layer is not uniform, in order to change the thickness of the spacer, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M4/88
CPCY02E60/50Y02E60/521Y02P70/50B29C45/14B29C45/73H01M8/0284H01M8/0286H01M8/1004
Inventor 高田和义
Owner NISSAN MOTOR CO LTD