Exploring the potential of exfoliated graphene nanoplatelets as the conductive filler in polymeric nanocomposites for bipolar plates

► An easy but effective compounding method (SSBM) was used to fabricate bipolar plates. ► Synergistic effects between GNP, carbon black and GNP of different sizes were investigated. ► Highly conductive PPS impregnated GNP papers were fabricated. ► PPS impregnated GNP papers were embedded into bipolar plates to improve various properties.