Author/Authors :
Yen، نويسنده , , Ying-Chieh and Ye، نويسنده , , Yunsheng and Cheng، نويسنده , , Chih-Chia and Lu، نويسنده , , Chu-Hua and Tsai، نويسنده , , Li-Duan and Huang، نويسنده , , Jieh-Ming and Chang، نويسنده , , Feng-Chih، نويسنده ,
Abstract :
In this study, polyhedral oligomeric silsesquioxane (POSS) moieties were incorporated into sulfonated poly(ether ether ketone) (SPEEK) to form a new cross-linked proton exchange membrane (PEM). The distribution of the POSS containing cross-linkers with or without sulfonic acid groups dictates the water behavior and connectivity of hydrophilic domains of the PEM. A PEM formed by incorporating 17.5 wt% of the cross-linker (containing POSS macromer and sulfonic acid groups) into SPEEK exhibits high proton conductivity (0.0153 S/cm), low methanol permeability (1.34 × 10−7 cm2/s), and high selectivity (1.14 × 105 Ss/cm3).
