SEPARATOR FOR FUEL CELL AND STACK FOR FUEL CELL COMPRISING THE SAME

A bipolar plate for a fuel cell is provided to realize excellent electric conductivity and mechanical strength and cost efficiency, to prevent reaction gases from moving through a bipolar plate, and to maximize the effective reaction area of a membrane-electrode assembly, thereby improving the quali...

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Bibliographische Detailangaben
Hauptverfasser:	KIM, JU DAM, LEE, JONG HO, PARK, JUNG WON
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	A bipolar plate for a fuel cell is provided to realize excellent electric conductivity and mechanical strength and cost efficiency, to prevent reaction gases from moving through a bipolar plate, and to maximize the effective reaction area of a membrane-electrode assembly, thereby improving the quality of a fuel cell. A bipolar plate for a fuel cell comprises: a gas impermeable layer(110) comprising a conductive agent selected from the group consisting of natural graphite, artificial graphite and expanded graphite having a particle diameter of 0.01-50 micrometers and a binder; and a gas permeable layer(120) formed to have a flow path pattern(130) on either surface or both surfaces of the gas impermeable layer, and comprising a conductive agent selected from the group consisting of natural graphite, artificial graphite and carbon black having a particle diameter of 100-300 micrometers, and a binder.