摘要:由于离子液体具有高热稳定性、高电导率、宽电化学窗口、不挥发等优点,使其作为新一代的功能性电解质材料成为了当前研究的热点。为了改善离子液体复合膜的稳定性,本论文采用溶液浇铸法制备聚合物/离子液体复合膜。聚合物基底-聚苯并咪唑(PBI) 和离子液体-二乙基甲基铵三氟甲基磺酸盐 ([dema][TfO]) 显示出良好的兼容性,并且复合膜具有高电导率、高热稳定性以及良好的保离子液体能力,在高温质子交换膜燃料电池中具有很好的应用前景。 37377
毕业论文关键词:离子液体、聚苯并咪唑、复合膜 Preparation and properties of ionic liquids-based high-temperature proton exchange membranes Abstract: As a new generation of functional electrolyte materials,ionic liquids (ILs) has become a hot research topic, because it has good characteristics of high thermal stability, high conductivity, wide electrochemical window and non-volatile. To improve the stability of ionic-liquids-based membrane, polymer/ionic liquid composite membrane was prepared by soultion casting method.Poly(benzimidazole) (PBI) polymer anddiethylmethylammoniumtrifluo- romethanesulfonate([dema][TfO] ) were compatible with each other. The hybrid membranes can be obtained with high stability, good ionic conductivity and high retention of ionic liquids.Thiswork would give a good path to study the novel membranes for high temperature proton exchange membrane fuelcells application.
Keywords: Ionic liquids; PBI;Composite membrane
第一章文献综述3
1.1 前言3
1.2 PEMFCs 的工作原理3
1.3 高温质子交换膜燃料电池(HT-PEMFCs)概述5
1.4 离子液体基高温质子交换膜的研究进展5
1.5 论文研究意义与研究内容9
第二章 实验过程10
2.1 PBI 的合成10
2.2 聚合物 PBI/[dema][TfO]的制备10
2.3 复合膜的表征11
2.3.1 电导率测试11
2.3.2 热重测试(TGA)11
2.3.3 复合膜稳定性测试11
第三章 PBI/[dema][TfO]复合膜制备及评价12
3.1 复合膜的制备12
3.2 复合膜的物理化学性质分析13
3.2.1 复合膜的热稳定性13
3.2.2 复合膜的质子传导能力分析14
3.2.3 复合膜的稳定性评价15
第四章 结论及展望17
4.1 小结17
4.2 展望18
参考文献18
致谢20
离子液体基高温质子交换膜的制备及其性能研究:http://www.youerw.com/huaxue/lunwen_36119.html