Novel Fluorinated IoNomer for PEM Fuel Cells

Commercial proton exchange membrane (PEM) fuel cell technology typically relies on the same type of ionomer in the catalyst layer as are used for the fuel cell membrane. However, the desired properties for the ionomer in the catalyst layer and the ionomer used in the membrane should be different. This results in poor fuel cell performance. The overall objective of this Phase I project is to design, synthesize and characterize novel fluorinated ionomer for PEM fuel cell cathode; the ionomer can improve the fuel cell performance under low-platinum and high-power operations. Novel fluorinated ionomers were developed; they have enhanced oxygen permeability by three times. The ionomers were integrated with the fuel cell catalyst to make fuel cell electrodes that tremendously improved fuel cell performance. We will further improve the ionomer properties and scale-up their productions. The ionomer will be integrated with other optimal components to maximize fuel cell performance. Selective ionomer will also be delivered to OEMs for commercialization. Commercial Applications and Other Benefits: The successful completion of this project will improve the performance and durability of PEM fuel cells, significantly reducing the cost of hydrogen vehicles. This will lead to a widespread deployment of hydrogen vehicles, which will relieve the nation’ heavy dependence on imported oil and reduce air pollutants.