The PBI (poly(benzimidazole)) nano-fiber thin film with thickness of 18–30 μm is prepared by electro-spinning from a 20 wt% PBI/DMAc (N, N′-dimethyl acetamide) solution. The PBI nano-fiber thin film is then treated with a glutaraldehyde liquid for 24h at room temperature to proceed chemical crosslink reaction. The crosslink PBI nano-fiber thin film is then immersed in Nafion solutions to prepare Nafion/PBI nano-fiber composite membranes (thickness 22–34 μm). The morphology of the composite membranes is observed using a scanning electron microscope (SEM). The mechanical properties, conductivity, and unit fuel cell performance of membrane electrode assembly (MEA) of the composite membrane are investigated and compared with those of Nafion-212 membrane (thickness ∼50 μm) and Nafion/porous PTFE (poly(tetrafluoro ethylene)) composite membrane (thickness ∼22 μm). We show the present composite membrane has a similar fuel cell performance to Nafion/PTFE and a better fuel cell performance than Du Pont Nafion-212.
- Advanced Energy Systems Division
Nafion/PBI Nanofiber Composite Membranes for Fuel Cells Applications
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Yu, TL, Liu, S, Lin, H, & Su, P. "Nafion/PBI Nanofiber Composite Membranes for Fuel Cells Applications." Proceedings of the ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology. ASME 2010 8th International Fuel Cell Science, Engineering and Technology Conference: Volume 2. Brooklyn, New York, USA. June 14–16, 2010. pp. 631-639. ASME. https://doi.org/10.1115/FuelCell2010-33025
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