Abstract: The invention provides an electrically conductive composite having high conductivity, hermeticity, high mechanical strength, low surface roughness, lightweight, and thin profile. The composite comprises a rubber modified with vinyl ester resin. After curing in mold, the composite may serve as a bipolar plate in a fuel cell. For example, the bipolar plate is combined with a membrane electrode assembly (MEA) to form a proton exchange membrane fuel cell (PEMFC).

Abstract: The present invention relates to a conductive composite material, comprising 5 to 40% by weight of a copolymer and 60 to 95% by weight of a conductive filler, wherein said copolymer is selected from a copolymer of vinyl terminated rubber-styrene, a copolymer of vinyl terminated rubber-styrene-divinyl benzene, or a copolymer of styrene-divinyl benzene. This conductive material has high conductivity, high mechanical strength and flexibility, and can be mixed with graphite molecules to form a conductive bipolar plate. This invention also relates to an electrode, which is produced from the above-mentioned conductive material.

Abstract: The invention provides an electrically conductive composite having high conductivity, hermeticity, high mechanical strength, low surface roughness, lightweight, and thin profile. The composite comprises a rubber modified with vinyl ester resin. After curing in mold, the composite may serve as a bipolar plate in a fuel cell. For example, the bipolar plate is combined with a membrane electrode assembly (MEA) to form a proton exchange membrane fuel cell (PEMFC).