Manufacturing method of fuel cell separator, and fuel cell

A technology for fuel cells and production methods, which is applied to components of fuel cells, fuel cells, solid electrolyte fuel cells, etc., can solve problems such as reduced dimensional accuracy and reduced air tightness of bipolar plates.
CN1739217AInactive Publication Date: 2006-02-22DAINIPPON INK & CHEM INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DAINIPPON INK & CHEM INC
Publication Date
2006-02-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for manufacturing fuel cell bipolar plates involves heating and softening a nonwoven fabric including an electrically conductive powder and thermoplastic resin fibers of 0.1 to 20 mum diameter, and shaping the softened nonwoven fabric.
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Description

technical field

[0001] The present invention relates to a method of producing fuel cell bipolar plates used in fuel cells such as phosphoric acid fuel cells and solid polymer fuel cells used as automotive power sources, portable power sources and emergency power sources. The invention also relates to fuel cells.

[0002] This application claims priority from Japanese Patent Application No. 2003-130170 filed May 8, 2003, which is incorporated herein by reference. Background technique

[0003] Fuel cells that extract the energy obtained by the electrochemical reaction of hydrogen and oxygen as electrical energy have begun to be used in various fields including automobiles. These fuel cells generally consist of basic structural units (unit cells) stacked in series, which include a dielectric membrane, electrodes and bipolar plates. This ensures that electrical energy (power generation) is obtained.

[0004] The bipolar plates used in these fuel cells need to be electrically ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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