null检测 | Fabrication and performances of solid superacid embedded chitosan hybrid membranes for direct methanol fuel cell-天津德尚科技有限公司

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研究领域：燃料电池质子导电膜交流阻抗频率范围：1MHz - 1Hz This study reports the fabrication and performances of hybrid proton-conducting membranes by dispersing nanosized solid superacid inorganic fillers, TiO2–SO4 2? (STiO2), into chitosan (CS) matrix. Fourier transform infrared spectra demonstrate intermolecular interactions between STiO2 and chitosan segmental chains. High resolution scanning electron microscope characterization reveals an essentially homogeneous dispersion of the solid superacid fillers within chitosan matrix. The incorporation of the superacid fillers leads to a reduced fractional free volume (FFV) of the hybrid membranes as confirmed by positron annihilation lifetime spectroscopy (PALS) analysis.

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