Application of Sulfonated Polyimide Membranes to Direct Methanol Fuel Cells

摘要

Sulfonated polyimide(SPI)membrane has been evaluated as an electrolyte membrane for direct methanol fuel cells(DMFCs)in comparison with Nafion~(R)112.The membrane-electrolyte assemblies(MEAs)were made by hot-pressing each membrane,an anode of Pt-Ru dispersed on carbon black(Pt-Ru/CB)and a cathode of Pt/CB with Nafion~(R)ionomer.The cell prepared with SPI membrane exhibited a suppressed methanol crossover to a half of Nafion~(R)112,resulting in the improved cell performance.