Check patentability & draft patents in minutes with Patsnap Eureka AI!

Fuel cell separator

A technology for fuel cells and separators, which is used in fuel cells, fuel cell parts, solid electrolyte fuel cells, etc., and can solve the problems of high cost and materials that cannot be widely used.

Inactive Publication Date: 2006-09-27
MITSUBISHI PLASTICS INC
View PDF1 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such materials cannot be commonly used because they are very expensive

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fuel cell separator
  • Fuel cell separator
  • Fuel cell separator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0128] First, 88% by volume of a fluororesin (Sumitomo 3M Ltd., THV415G, specific gravity: 2) and 12% by volume of carbon black (Lion Corporation, Ketjen Black EC600JD, specific gravity: 1.5) as a conductive agent were mixed by a twin-screw extruder Mix together.

[0129]The mixture was extruded (at an extrusion temperature of 240° C.) into a conductive fluororesin sheet having a thickness of 50 μm. The volume resistance of the conductive fluororesin was 0.8 Ω·cm.

[0130] The metal substrate is a metal plate prepared by forming a nickel plating layer to 0.8 μm on a SUS304 plate (thickness: 0.3 mm). On both sides of the SUS 304 plate with the electroplated layer, a 0.3% solution of a silane coupling agent (GE Toshiba Silicones, TSL8331) in ethanol as a primer is coated by a #10 wire-wound bar coater, and then the substrate Dry at 100°C for 10 minutes. The conductive fluororesin sheet, the SUS304, and the conductive fluororesin sheet were placed in this order, and they were ...

Embodiment 2

[0136] Using the fluororesin sheet (first resin layer, thickness: 50 μm) prepared as described in Example 1 and two transfer sheets (transfer layer thickness of 10 μm), place the transfer sheet, fluororesin sheet, and transfer sheet in this order , so that the outermost layer is the transfer substrate (PET flake). at a temperature of 200°C and 3.5 x 10 6 Pa(36kgf / cm 2 ) under pressure conditions for 10 minutes, remove the two transfer substrates, thereby forming the second and third resin layers on both sides of the first resin layer. The flakes thus prepared had a total thickness of 170 μm.

[0137] Using the two conductive sheets prepared as described above, and the SUS304 plate (thickness: 0.3mm) having a surface nickel plating layer with a thickness of 0.8 μm as described in Example 1 as a metal plate, the conductive sheet, SUS304 plate and conductive sheets are placed in this order, at a temperature of 200°C and 3.5×10 6 Pa(36kgf / cm 2 ) under pressure conditions, the...

Embodiment 3

[0140] First, 85% by volume of polyolefin elastomer (Idemitsu Kosan Co., Ltd., T310E, specific gravity: 0.88) and 152% by volume of carbon black (Lion Corporation, Ketjen Black EC600JD, specific gravity : 1.5) mixed together.

[0141] The mixture was extruded (at an extrusion temperature of 260° C.) into a conductive polyolefin resin sheet having a thickness of 50 μm. The volume resistance of the conductive polyolefin resin was 0.5 Ω·cm.

[0142] Separately, as a preparation method for forming the second resin layer, to cyclohexane, styrene elastomer (Asahi Kasei Corporation, Tuftec H1041, specific gravity: 0.91) and fine carbon fiber (Showa Denko K.K. , Vapor-grown carbon fiber (VGCF), specific gravity: 2), to 10% by weight on a solid basis, to prepare a coating material.

[0143] The coating material was coated on a substrate film (polyethylene terephthalate, Mitsubishi Polyester Film Corporation, thickness: 25 μm) by a wire bar coater (Matsuo Sangyo Co. Ltd., #24) . The...

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
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
lengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

A fuel cell separator comprises a resin conductive layer as a mixture of a resin and a conductive filler at least on one side of a metal substrate, wherein the resin conductive layer comprises (a) a first resin layer having a volume resistance of 1.0 CR m or less and (b) at least one of a second resin layer constituting the surface of the resin conductive layer and having a volume resistance smaller than that of the first resin layer and a third resin layer formed in an interface with the metal substrate and having a volume resistance smaller than that of the first resin layer. The separator is excellent in current collecting performance, formability, strength and corrosion resistance as a fuel cell separator, especially as a separator for a solid polymer electrolyte fuel cell.

Description

technical field [0001] The present invention relates to a fuel cell separator; in particular, to such a separator for a fuel cell having a plurality of laminated primary cells and which is disposed between adjacent primary cells (ie, unit cells) space, and it is combined with electrodes to form channels for fuel gas and oxidizing gas while separating fuel gas and oxidizing gas; in particular, it relates to a fuel cell separator having excellent formability, strength and corrosion resistance. Background technique [0002] A separator constituting a fuel cell, particularly a polymer electrolyte fuel cell, is placed in contact with each electrode, and on both sides, a solid electrolyte film is sandwiched between the electrodes. In order to form passages of feed gas such as fuel gas and oxidant gas between the separator and the electrodes, many protrusions and grooves for forming gas passages are formed on the surface of the separator facing the electrodes. [0003] The electro...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M8/10
CPCH01M2008/1095H01M8/0213H01M8/0206H01M8/0228H01M8/0221Y02E60/50H01M8/021H01M8/0226H01M8/1002H01M8/1007Y10T428/31678
Inventor 宫川伦成
Owner MITSUBISHI PLASTICS INC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com