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Method of preserving fuel cell membrane electrode assembly

A membrane-electrode assembly and fuel cell technology, which are applied in the directions of fuel cell components, fuel cells, battery electrodes, etc.

Inactive Publication Date: 2008-12-10
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, after being assembled as a fuel cell stack, it is generally believed that it is possible to store it for a long time by the method of the existing example, but, for example, with the generalization of fuel cells, it is not suitable to only produce membrane electrode assemblies for fuel cells, and requires Storage of a single conjugated body when transporting to a distant place

Method used

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  • Method of preserving fuel cell membrane electrode assembly
  • Method of preserving fuel cell membrane electrode assembly
  • Method of preserving fuel cell membrane electrode assembly

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Experimental program
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Embodiment approach 1

[0056] figure 2 It is a perspective view showing the storage state of the fuel cell membrane electrode assembly according to the embodiment of the present invention.

[0057] FIG. 3 is a cross-sectional view showing a virtual cut of the membrane electrode assembly 11 stored in the airtight container 21 .

[0058] As shown in these figures, the membrane electrode assembly 11 is stored in a sealed state in a bag-shaped airtight container 21 made of resin.

[0059] The membrane electrode assembly 11 is a membrane electrode assembly for a fuel cell, and has a structure in which an anode catalyst layer 13 and a cathode catalyst layer 14 are laminated on each surface of a solid polymer electrolyte membrane 12 . In addition, each of the catalyst layers 13, 14 has a structure in which a catalyst is supported on a carbon network, which is fragile and not impact-resistant. In addition, as shown in detail in FIG. 3, gas diffusion layers 15 are provided on each side of the catalyst laye...

Embodiment approach 2

[0077] Next, a second embodiment of the present invention will be described with reference to the drawings.

[0078] 5 is a cross-sectional view showing a storage state of the membrane electrode assembly 11 in a state where the outer surface is covered with the protective film 16 .

[0079] The membrane electrode assembly 11 and the airtight container 21 are the same as those described above, and thus description thereof will be omitted.

[0080] The protective film 16 directly prevents the contact between the membrane electrode assembly 11 and oxygen and performance-damaging substances remaining in the airtight container 21 , and also serves as a buffer material for preventing damage to the surface of the catalyst. As a material of the protective film 16, a polymer-based film resin having high oxygen barrier properties can be used. The material of the protective film 16 may be the same as that of the airtight container 21 described above.

[0081] In addition, the membrane ...

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Abstract

The present invention relates to a storage method for a membrane electrode assembly for a fuel cell in which a catalyst electrode is stacked on a solid polymer electrolyte membrane. Membrane electrode assembly for fuel cells.

Description

technical field [0001] The present invention relates to a storage method for a fuel cell membrane electrode assembly in which an oxygen electrode and a fuel electrode are laminated on a solid polymer electrolyte membrane. Background technique [0002] Recently, fuel cells have attracted attention as a clean power source. There are many types of fuel cells, one of which is a solid polymer electrolyte fuel cell. [0003] This solid polymer electrolyte fuel cell has a so-called fuel cell stack (multilayer cell) formed by stacking a plurality of so-called single cells in series as the minimum unit of power generation. Since the fuel cell stack is equipped with oxygen and fuel The supply means and the cooling means of the multilayer battery, therefore, the desired power (voltage) can be obtained by reacting hydrogen and oxygen in each unit cell. [0004] The single cell further has a fuel cell membrane electrode assembly and a separator for separating adjacent assemblies and ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04H01M8/10H01M4/86H01M8/02
CPCH01M8/241H01M8/2475H01M8/04231Y02E60/50H01M8/2457
Inventor 中川贵嗣寺西正俊辻庸一郎
Owner PANASONIC CORP