In this study, a proton-exchange membrane for fuel cells was prepared via a two-step reaction with an allyl methacrylate (AMA) as an asymmetric crosslinking agent. First, a linear-chain polymer was synthesized, consisting of hydrophilic 2-acrylamido-2-methylpropanesulfonic acid (AMPS), hydrophobic 2,2,2-trifluoroethyl methacrylate (TFEMA), and AMA. Subsequently, we crosslinked the linear-chain polymer by reacting the remaining allyl group during dry heating. The proton conductivity of the prepared membrane was 7 × 10−2 S/cm at room temperature. The membrane was characterized by Fourier transform infrared spectroscopy, differential scanning calorimetry, and atomic force microscopy. The polymer electrolyte membrane fuel cell (PEMFC) performance was evaluated for a membrane electrode assembly composed of the crosslinked AMPS–TFEMA–AMA/ fluoroalkyl graft polymer (FGP) membrane. As a result of a power-generation test, a maximum power density of 174 mW/cm2 at a current density of 400 mA/cm2 was observed for a PEMFC single cell. Consequently, it was confirmed that the AMPS–TFEMA–AMA/FGP membrane for PEMFC could easily be prepared via a two-step reaction at a low cost and that PEMFC exhibited a cell performance and that of cells with the Nafion membrane. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
If you can't find a tool you're looking for, please click the link at the top of the page to "Go to old article view". Alternatively, view our Knowledge Base articles for additional help. Your feedback is important to us, so please let us know if you have comments or ideas for improvement.