NOVELTY - Fuel cell flow field plate or bipolar plate (71) having flow channels on at least a face of the plate, comprises an electrically conductive polymer composite having (wt.%): a conductive filler (at least 50); thermoplastic matrix material (1-49.9); and thermoset resin binder (0.1-10). The conductive filler includes reinforcement fibers (at least 5 wt.%), expanded graphite platelets, graphitic nano-fibers, and/or carbon nano-tubes.    USE - As a current collector in a fuel cell e.g. proton exchange membrane (PEM).    ADVANTAGE - Fuel cell flow field plate or bipolar plate provides fuel cell component that is highly conductive and, hence, is used as a current collector in a fuel cell with reduced contact resistance. The bipolar plate can be made without involving high temperature treatments. The highly conductive composite material for fuel cell bipolar plates, which can be made without involving melting and cooling a thermoplastic twice. The thermoset resin can be molded with a fast cycle. The thermoset binder resin can be quickly cured to hold the reinforcement elements together, typically without a need to be heated to a high temperature and then cooled down slowly. The resulting preform is very easy to handle during subsequent molding operations. The electrically conductive polymer composite can be produce continuously with the automated process at a low cost.    DETAILED DESCRIPTION - Fuel cell flow field plate or bipolar plate (71) having flow channels on at least a face of the plate, comprises an electrically conductive polymer composite having (wt.%): a conductive filler (at least 50); thermoplastic or polymer matrix material (1-49.9); and thermoset resin binder (0.1-10). The conductive filler includes reinforcement fibers (at least 5 wt.%), expanded graphite platelets, graphitic nano-fibers, and/or carbon nano-tubes. The sum of conductive filler wt.%, thermoplastic matrix wt.% and thermoset resin binder wt.% equals 100% and the bulk electrical conductivity of the plate is at least 100 S/cm. The plate has a major surface having a skin layer with a thickness of less than 100 microns. The skin layer has a polymer volume fraction of less than 20% and conductive filler of greater than 80%. The flow field or bipolar plate has a bulk conductivity is 200 S/cm. An INDEPENDENT CLAIM is included for producing the fuel cell flow field plate or bipolar plate involving feeding and moving a sheet of porous substrate toward a desired direction; mixing and feeding conductive filler, thermoset binder, thermoplastic matrix material and a carrier fluid onto porous substrate; moving to allow solid mixture layer to go through a compaction stage; and heating and consolidating solid mixture layer and generating flow channels on a surface of solid mixture layer.    DESCRIPTION OF DRAWING(S) - The figure shows a sectional view of the bipolar plate.    bipolar plate (71)    fluid flow channels. (79,83)