高校化学工程学报2017，Vol.31Issue(4)：945-950,6.DOI:10.3969/j.issn.1003-9015.2017.04.027
磷酸锆/磺化聚苯并咪唑填孔型质子交换复合膜的制备与性能研究
Preparation and Characterization of Proton Exchange Composite Membranes Pore-Filled with ZrP/Sulfonated Polybenzimidazole
摘要
Abstract
SPBI-ZrP/ePTFE proton exchange composite membranes were prepared by pore-filling techniques using ePTFE porous substrate (supporting material) filled with SPBI-ZrP polymer electrolytes. The microstructure and performance of the membranes were characterized by FESEM, FT-IR, dry-wet weighting method, tensile test and AC impedance. The results indicate that SPBI-ZrP is successfully filled into the ePTFE substrate and the membrane surface is smooth. The swelling degree of the SPBI-ZrP-2.5 membrane in thickness direction is about 7.3 times of that of the SPBI-ZrP-2.5/ePTFE membrane, because ePTFE can effectively suppress membrane swelling and improve membrane dimensional stability. Simultaneously, because of the reinforced effect of ePTFE, the mechanical strength of the SPBI-ZrP-2.5/ePTFE membrane is 19.86% higher than that of SPBI-ZrP-2.5. The SPBI-ZrP-2.5/ePTFE membrane shows a high proton conductivity of 0.222 and 0.071 S·cm-1 at 160℃ and 80℃ under 100% relative humidity, respectively. The proton conductivity of Nafion membrane (EW=1100) is 0.077 S·cm-1 at 80℃ and decreases sharply when temperature exceeds 100℃. These results indicate that SPBI-ZrP/ePTFE membranes have good proton conductivity at higher temperature, which can be applied in fuel cells with high temperature proton exchange membranes.关键词
聚四氟乙烯/磺化聚苯并咪唑/α-磷酸锆/高温/质子电导率Key words
polytetrafluoroethylene/sulfonated polybenzimidazole/α-zirconium phosphate/high temperature/proton conductivity分类
信息技术与安全科学引用本文复制引用
张琪,赵娟,敖勇,徐荣,潘丽燕,钟璟..磷酸锆/磺化聚苯并咪唑填孔型质子交换复合膜的制备与性能研究[J].高校化学工程学报,2017,31(4):945-950,6.基金项目
国家自然科学基金(21306012) （21306012）
江苏省普通高校研究生科研创新计划(SJLX15_0534) （SJLX15_0534）
江苏高校品牌专业建设工程资助项目(ppzy2015B145). （ppzy2015B145）
