Graphene composite inks and coatings for fuel cell applications

 
The impetus behind the evolution of the Bipolar plate (BPP) materials has been to reduce the volume and weight of the Polymer Electrolyte Membrane fuel cells (PEMFC) and eventually the overall cost. As a BPP is a key part of a fuel cell stack, it contributes significantly towards the total weight and cost of a of a fuel cell stack. The most important performance indicating parameters for a BPP are the interfacial contact resistance and the corrosion resistance. Over the period of time, different materials have been used; from graphite to composite polymers and currently, metals are used as BPPs. In addition to the evolution of the base material, a number of coatings have also been developed to enhance the performance of the BPPs; improving conductivity and corrosion resistance. Graphene composite possesses excellent chemical strength; it is highly durable with good corrosion resistance.