Manufacturing method of separator material and fuel battery separator and fuel battery

A fuel cell and separator material technology, applied in the direction of fuel cells, fuel cell parts, battery pack parts, etc., can solve problems such as difficulty in obtaining sufficient dispersion, and achieve the effect of improving conductivity and improving electrical efficiency

Inactive Publication Date: 2009-12-30
HANKOOK TIRE WORLDWIDE
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  • Abstract
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Problems solved by technology

[0005] However, compared with graphite, carbon black has excellent compatibility with resin, so it is difficult to obtain sufficient dispersion by mixing according to the conventional technology

Method used

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  • Manufacturing method of separator material and fuel battery separator and fuel battery
  • Manufacturing method of separator material and fuel battery separator and fuel battery

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Embodiment

[0022] In order to manufacture a thermoplastic separator composed of 75% by weight of graphite, 5% by weight of carbon black, and 20% by weight of polypropylene as a resin, as a first step, the resin and carbon black are mixed in advance through an extrusion process. Carbon black masterbatch, at this point, 80% by weight resin and 20% by weight carbon black were mixed. Since the composition of the final separator to be manufactured is 75% by weight of graphite, 5% by weight of carbon black, and 20% by weight of polypropylene resin, in the second mixing step of mixing graphite, when 75% by weight of When mixing graphite and carbon black masterbatch, in order to obtain the composition of the above-mentioned final separator, the carbon black masterbatch is calculated so that the contents of resin and carbon black are 80% by weight and 20% by weight, respectively.

[0023] In addition, in this mixing step, in order to improve the dispersibility of carbon black that is difficult to...

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Abstract

The present invention provides a manufacturing method of separator material with high conductivity for a fuel battery, a fuel battery separator using the separator material and the fuel battery. In the present invention, carbon soot parent material prepared by mixing resin and carbon soot in advance is used to manufacture the fuel battery separator material to increase dispersivity of the carbon soot, and then a fuel battery separator and a fuel battery with excellent conductivity are manufactured.

Description

technical field [0001] The present invention relates to a method for manufacturing a highly conductive separator material for fuel cells, a fuel cell separator and a fuel cell manufactured by the method. In more detail, the present invention relates to a carbon black masterbatch prepared by mixing resin and carbon black in advance, which is used in the manufacture of fuel cell separator materials, thereby improving the dispersibility of carbon black, and then manufacturing carbon black with excellent electrical conductivity. A method for a fuel cell separator material, a fuel cell separator manufactured according to the above method, and a fuel cell. Background technique [0002] Generally, a fuel cell refers to an energy conversion device that can directly convert chemical energy into electrical energy through the electrochemical reaction of hydrogen and oxygen as fuel without going through a combustion process. Substances constituting a cell stack which is the core of a f...

Claims

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Application Information

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IPC IPC(8): H01M8/02H01M2/16H01M8/00
CPCY02E60/12Y02E60/50Y02P70/50H01M8/0213H01M8/0221H01M8/0226
Inventor 任南益金正宪李豪燮
Owner HANKOOK TIRE WORLDWIDE
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