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Manufacturing method of membrane electrode assembly, membrane electrode assembly, and manufacturing apparatus thereof

A technology for membrane electrode assembly and manufacturing device, which is applied to 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: 2011-12-07
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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  • Manufacturing method of membrane electrode assembly, membrane electrode assembly, and manufacturing apparatus thereof
  • Manufacturing method of membrane electrode assembly, membrane electrode assembly, and manufacturing apparatus thereof
  • Manufacturing method of membrane electrode assembly, membrane electrode assembly, and manufacturing apparatus thereof

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Experimental program
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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] Figure 13 It is a partial sectional view showing the manufacturing apparatus of the membrane electrode assembly according to the 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 accordin...

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] Figure 17 It is a partial sectional view showing the manufacturing apparatus of the membrane electrode assembly according to the 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] Th...

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Abstract

A method for preparing a membrane electrode assembly, a membrane electrode assembly prepared by the method, and its preparation apparatus are provided to optimize the thickness of a gasket part without preparing a different kind of gaskets of different thickness. A method for preparing a membrane electrode assembly provided with catalyst layers(5A,5B) and gas diffusion layers(6A,6B) at the both sides of an electrolyte membrane(2) comprises the step of controlling the molding thickness according to the thickness of the catalyst layers and the gas diffusion layers to the edge part at the surrounding of the catalyst layers and the gas diffusion layers so as to mold resin gasket parts(8A,8B) integrally.

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 Patents(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