Preparation and properties of thin epoxy/compressed expanded graphite composite bipolar plates for proton exchange membrane fuel cells

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

“…Substantially lower gas permeability in PPS/GNP nanocomposites is due to the excellent gas barrier properties of GNP platelets as the nano-reinforcements [23]. And if compared with the DOE target for the gas permeability [37], it is found that even the neat PPS film could successfully satisfy the requirement. And the permeability value of the PPS/GNP nanocomposite with 60 wt% GNP content is more than two orders of magnitude lower than the DOE target, which suggests that PPS/GNP nanocomposites fabricated by the method of SSBM and compression mold can meet the permeability request for bipolar plates.…”

The preparation technique optimization of epoxy/compressed expanded graphite composite bipolar plates for proton exchange membrane fuel cells

“…Vacuum resin impregnation in CEG sheets was reported as one of the proper methods for the preparation of polymer/EG composite bipolar plates with good physical properties [17][18][19][20][21][22][23]. For example, Ballard Power System Inc. has investigated CEG-based composite bipolar plates and applied them in the fuel cell vehicles [17][18][19].…”

Isothermal and Non-Isothermal Crystallization Kinetics of Conductive Polyvinylidene Fluoride/Poly(Ethylene Terephthalate) Based Composites

“…Polymer-based materials are deemed to be excellent materials for BPs owing to their good mechanical properties, corrosion resistance, low cost and ease of processing. Poly(methyl methacrylate) (PMMA), PVDF, PET, poly(styrene-co-acrylonitrile), nylon 6, polystyrene, poly(vinyl acetate), etc., have been used to prepare BPs for PEMFCs [4]. However, the addition of high concentrations of conductive fillers is required to ensure electrical conductivity and this leads to poor mechanical properties and machining problems.…”