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, TiO2SO4
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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