高校化学工程学报2025，Vol.39Issue(5)：900-907,8.DOI:10.3969/j.issn.1003-9015.2025.00.020
磺化聚酰亚胺/磺化介孔二氧化硅质子交换膜制备与表征
Preparation and characterization of sulfonated polyimide/sulfonated mesoporous silica proton exchange membranes
摘要
Abstract
In order to improve the hydrolysis stability and proton conductivity of sulfonated polyimide membrane,the sulfonated polyimide(SPI)with ether bonds and sulfonated mesoporous silica(SMCM)were blended.The SPI/SMCM proton exchange composite membranes were prepared by solution casting method.The effects of differ-ent SMCM contents on the microstructure and performance of SPI/SMCM composite membranes were investigated.The experimental results showed that the introduction of SMCM improved the thermal stability of the composite membranes.The large specific surface area of hydrophilic SMCM helped to improve the water uptake of SPI/SMCM composite membranes.The water uptake of SPI/SMCM-10％composite membrane reached 19.5％.The SMCM formed a support structure within the composite membranes to inhibit the swelling of the SPI/SMCM compos-ite membranes and improve the dimensional stability of the composite membrane.The SPI/SMCM-6％proton ex-change composite membrane had the best overall performance by comparing the performance of SPI/SMCM compos-ite membrane.The tensile strength of SPI/SMCM-6％composite membrane was 34.3 MPa,which was 2.88 times higher than that of Nafion212 membrane(11.9 MPa).The SPI/SMCM-6％composite membrane had good hydroly-sis stability with the value greater than 360 h.The proton conductivity of SPI/SMCM-6％composite membrane in deionized water at 90 ℃ reached 0.286 S·cm-1.The introduction of hydrophilic SMCM formed a continuous proton transport channel in the SPI/SMCM composite membranes and improved the proton conductivity of the composite membranes.关键词
磺化聚酰亚胺/磺化介孔二氧化硅/质子交换膜/质子电导率/燃料电池Key words
sulfonated polyimide/sulfonated mesoporous silica/proton exchange membranes/proton conduc-tivity/fuel cell分类
动力与电气工程引用本文复制引用
程成,张琪,张正东,钟璟,周守勇..磺化聚酰亚胺/磺化介孔二氧化硅质子交换膜制备与表征[J].高校化学工程学报,2025,39(5):900-907,8.基金项目
江苏省精细石油化工重点实验室开放课题基金资助项目(KF2106). （KF2106）
