Bipolar plates play the most significant role in weight, volume, and corresponding costs of fuel cells. Used material for construction of bipolar plates of fuel cell must be formable to a structure and have proper properties for machinery operation to make grooves in various forms over the manufactured plates. These grooves are designed to transfer oxygen and hydrogen to the cell’s membranes and uniform distribution of gases over them. In polymeric fuel cells, water is the reaction’s product that must be removed from the cells through the grooves. Initially, metallic and graphite materials had been used for production of bipolar plates due to their electrical conductivity characteristics. Later, these plates due to their deficiency such as corrosion, weight, and production expenses were appropriately substituted by composite plates. This article presents results of a study on construction of bipolar plates using conductive polymeric composites. Polymeric composites are light materials that can be casted in different structures, shapes, and sizes for application in fuel cells. The main advantages of polymeric composites are their high resistance against corrosion, and their light weight. In the constructed composites, polypropylene was implement as polymer matrix, and conductive carbon black and graphite as filler in order to supply the required electrical conductivity. The added fillers have been distributed in polypropylene by using an internal mixer. Then, bipolar plate specimens were prepared by molding of composite in hot press. The prepared specimens have been characterized to evaluate their specifications such as mechanical properties, and their performance properties like thermal and electrical conductivities. The results of performed tests have shown a good performance on thermal conductivity greater than 10W/m.K, electrical conductivity higher than 50S/cm, and high mechanical strength, flexural strength greater than 25MPa. Composites having 55-60% graphite, 15-18% carbon black and 20-25% polypropylene, are the best options for producing bipolar plate of fuel cell. Although graphite percentage is more than 50%, they are not brittle and have proper properties for machinery operation. These plates have a density of 1.1 g/cm 3 . The constructed composite plates were optimized and their weights were reduced in comparison to similar metallic plates for about 80%, and in contrast to graphite plates for about 40%. This method for production of bipolar plates is more economical as it reduces the cost of used materials and expenses of manufacturing operations. 3 kinds of conductive carbon black have been used in this project that the composites made of carbon black XE-CB and HI-CB respectively have had the maximum and minimum electrical and thermal conductivity and mechanical strength. Key words : Fuel cell, bipolar plates, composite, polypropylene, carbon black, graphite.