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- W2790433212 endingPage "1673" @default.
- W2790433212 startingPage "1664" @default.
- W2790433212 abstract "Advanced composite membranes have been obtained by incorporation of the meso-tetrakis(4-sulfonatophenyl)porphyrin (TPPS) into a sulfonated poly(etheretherketone) (sPEEK). The presence of porphyrins in their monomeric, dimeric, and aggregated forms into the membrane ionic domains have been investigated by static and time-resolved spectroscopic techniques. In particular, we succeeded in modulating the percentage of the different porphyrin species present into the proton-conducting channels acting on the dye load in the range 0.35–5 wt % porphyrin/polymer. The nanostructure of all the composite membranes has been investigated by small-angle X-ray scattering. This latter shows how the presence of TPPS porphyrins into the membrane ionic domains induces a reorganization of polymer chains in a more stable and organized lamellar-like structure with respect to the pristine polymeric matrix. Finally, the composite membranes have been used as proton exchange membrane for fuel cells (PEFCs) technology. The presence of porphyrins improved the performance of the membranes in terms of proton conductivity and stability. In particular, the 0.77 wt % composite membrane has been tested in a PEFC single cell simulating the operative conditions typical for portable applications, highlighting an improved stability compared to that of the sPEEK pristine membranes." @default.
- W2790433212 created "2018-03-29" @default.
- W2790433212 creator A5004301405 @default.
- W2790433212 creator A5008838688 @default.
- W2790433212 creator A5030816341 @default.
- W2790433212 creator A5059513044 @default.
- W2790433212 creator A5060328479 @default.
- W2790433212 creator A5077945002 @default.
- W2790433212 creator A5083320595 @default.
- W2790433212 date "2018-03-23" @default.
- W2790433212 modified "2023-10-02" @default.
- W2790433212 title "Porphyrin/sPEEK Membranes with Improved Conductivity and Durability for PEFC Technology" @default.
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- W2790433212 doi "https://doi.org/10.1021/acsaem.8b00126" @default.