Membrane electrode assembly for fuel cell, and solid polymer fuel cell
A membrane-electrode assembly and fuel cell technology, applied in fuel cells, battery electrodes, solid electrolyte fuel cells, etc., can solve the problems of dissolving catalyst substances and insufficient oxygen reduction ability.
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no. 1 Embodiment approach
[0022] Hereinafter, a first embodiment of the present disclosure will be described with reference to the drawings.
[0023] Here, the drawings are schematic, and the relationship between the thickness and the plane size, the ratio of the thickness of each layer, and the like are different from the actual ones. In addition, the embodiment shown below exemplifies the structure for actualizing the technical idea of this disclosure, and the material, shape, structure, etc. of a component are not limited to the following in the technical idea of this disclosure. The technical idea of the present disclosure can be variously modified within the technical scope defined by the terms of the claims described in the claims.
[0024] 〔Membrane Electrode Assembly〕
[0025] like figure 1 As shown, the membrane electrode assembly 11 of the present embodiment includes a polymer electrolyte membrane 1 and a pair of electrode catalyst layers 2 and 3 sandwiching the polymer electrolyte me...
Embodiment 1-1
[0098] 〔Preparation of catalyst ink〕
[0099] A platinum-loaded carbon catalyst (catalyst-loaded particles) with a loading density of 50% by mass, a fibrous oxide-based catalyst material (TiONP) with an average fiber diameter of 100 nm and an average fiber length of 15 μm, and 25% by mass The polymer electrolyte solution is mixed in a solvent, and the solvent is dispersed using a planetary ball mill. At this time, the dispersion time was set to 30 minutes to prepare a catalyst ink. The composition ratio of the starting materials in the prepared catalyst ink was set as follows. That is, the mass ratio of carbon support: oxide-based catalyst substance: polymer electrolyte was set to 1:1.5:0.7. A solvent obtained by mixing ultrapure water and 1-propanol was used as a solvent for the catalyst ink. In the solvent, set the volume ratio of ultrapure water to 1-propanol at 1:1. Moreover, the catalyst ink was prepared so that the solid content in the catalyst ink might become 12 ma...
no. 2 Embodiment approach
[0137] Hereinafter, a second embodiment of the present disclosure will be described with reference to the drawings.
[0138] Here, the drawings are schematic, and the relationship between the thickness and the plane size, the ratio of the thickness of each layer, and the like are different from the actual situation. In addition, the embodiment shown below exemplifies a configuration for embodying the technical idea of the present disclosure, and in the technical idea of the present disclosure, the material, shape, structure, and the like of the constituent members are not specific to the following. The technical idea of the present disclosure can be variously changed within the technical scope defined by the claims described in the claims.
[0139] [Membrane electrode assembly]
[0140] like figure 1 As shown, like the membrane electrode assembly 11 of the first embodiment, the membrane electrode assembly 11 of the present embodiment includes a polymer electrolyte memb...
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Abstract
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