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Fuel cell

A slurry and electrode technology, used in fuel cells, circuits, electrical components, etc., can solve problems such as productivity problems and time-consuming manufacturing, and achieve the effect of shortening operation time.

Active Publication Date: 2008-11-26
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although a diffusion layer such as Patent Document 1 cited as a background art has excellent battery performance, it takes time to manufacture and has problems in productivity.

Method used

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  • Fuel cell
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 2 As shown, the carbon paper (manufactured by Toryo Corporation: TGPH060H) of the base material of the gas diffusion layer has a weight ratio of carbon paper: FEP (tetrafluoroethylene-hexafluoropropylene copolymer) of 95:5 (for cathode), 60 : 40 (for anode) is immersed in the FEP dispersion, and then dried at 60°C for 1 hour, and then heat treated (FEP water repellent treatment) at 380°C for about 15 minutes (S10). In this way, almost uniform water repellent treatment is applied to the carbon paper.

[0031] A carbon block (manufactured by CABOT: Vulcan XC72R), terpineol (manufactured by Kishida Chemical Co., Ltd.) as a solvent, and triton (manufactured by Kishida Chemical Co., Ltd.) as a solvent are used as carbon black in a weight ratio : Terpineol: Tritium nucleus=20:150:3, mixed in a universal mixer (manufactured by DALTON) at room temperature for 60 minutes to make it uniform to prepare a carbon slurry (S11).

[0032] A low-molecular fluororesin (manufa...

Embodiment 2

[0036] Such as image 3 As shown, carbon paper (manufactured by Toryo Corporation: TGPH060H) as the base material of the gas diffusion layer was subjected to the same FEP water repellent treatment as in Example 1 (S20).

[0037] As in Example 1, the carbon black, terpineol, and tritium nucleus were mixed in a weight ratio of carbon block: terpineol: tritium nucleus = 20: 150: 3 in a universal mixer at room temperature for 60 minutes to produce Carbon slurry (S21).

[0038] In the same manner as in Example 1, a gas diffusion layer slurry for cathode and a gas diffusion layer slurry for anode were produced.

[0039] Coat each gas diffusion layer slurry cooled to room temperature on the surface of the above-mentioned carbon paper with FEP water repellent treatment, and make the coating state in the carbon paper surface uniform, and dry it at 60°C for 60 minutes with a hot air dryer (S27). After the cathode side gas diffusion layer is dried by a hot air dryer, the cathode gas diffusio...

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PUM

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Abstract

PROBLEM TO BE SOLVED: To provide a fuel cell capable of shortening the working time for forming a gas diffusion layer. ŽSOLUTION: In a polymer electrolyte fuel cell 10 equipped with an electrolyte layer 12, first electrodes 14, 20, and second electrodes 22, 28, the first electrodes are equipped with a catalyst layer 14 having a catalyst function, a substrate 18 having conductivity, and a water management layer 16 having conductivity and controlling the movement of water between the catalyst layer and the substrate. Ž

Description

Technical field [0001] The present invention relates to a fuel cell, in particular to a fuel cell capable of improving the productivity of a gas diffusion layer of a solid polymer fuel cell. In addition, the present invention also relates to a fuel cell capable of maintaining or improving the cell performance of a polymer electrolyte fuel cell and improving the productivity of the gas diffusion layer. Background technique [0002] Although it is an era in which new technologies such as IT and biology are being deployed on a global scale, the energy industry remains the largest backbone industry in this situation. Recently, with the infiltration of environmental awareness represented by the prevention of global warming, expectations for so-called new energy sources have also increased. In addition to being environmentally friendly, new energy can also be generated in a distributed manner close to the power demand point, so it also has advantages in terms of power transmission loss...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/00
CPCY02E60/521Y02E60/50
Inventor 高见洋史门胁正天宫井惠吾坂本滋
Owner SANYO ELECTRIC CO LTD