Abstract
Methanol crossover through polymer electrolyte membranes (PEMs) is a major concern in fuel cell research. In order to address this problem, a sulfonated poly(fluorenyl ether ketone) (SPFEK)/α-zirconium phosphate (ZrP) nanocomposite membrane containing 2.0 wt. % of ZrP nanosheets was prepared by casting a dimethylacetamide (DMAc) dispersion containing SPFEK and exfoliated ZrP nanosheets. The membrane was characterized and tested as a PEM in a single direct methanol fuel cell (DMFC) at 80 °C. The introduction of ZrP nanosheets improved the oxidative stability and reduced methanol permeability and water uptake of the PEM. The SPFEK/ZrP nanocomposite membrane led to the best cell performance among the single cells using SPFEK/ZrP nanocomposite membrane, SPFEK, and Nafion® 117. The maximum power densities obtained for the cells composed of the above three membranes were 51.3, 41.4, and 43.6 mW/cm2, respectively.
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Acknowledgment
We are grateful to Dr. Abraham Clearfield at Texas A&M University for valuable discussions.
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Ding, F., Hu, H., Ding, H. et al. Sulfonated poly(fluorene ether ketone) (SPFEK)/α-zirconium phosphate (ZrP) nanocomposite membranes for fuel cell applications. Adv Compos Hybrid Mater 3, 546–550 (2020). https://doi.org/10.1007/s42114-020-00184-y
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DOI: https://doi.org/10.1007/s42114-020-00184-y