Porous electrospun fibre mats with with proton conductivity for composite membranes

用于复合膜的具有质子传导性的多孔电纺纤维垫

• 批准号: 413271034
• 负责人: Professor Dr. Roland Marschall
• 金额: --
• 依托单位: Lehrstuhl für Physikalische Chemie III
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2023-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/413271034?language=en
• 关键词: Porous; electrospun; fibre; mats; proton

Aim of this project is the synthesis of flexible SiO2 fibre mats via electrospinning, which will be functionalized with sulfonic acid or benzimidazole groups for high proton conduction. Different strategies will be pursued to achieve electrospun nanofibers with high porosity, to enable high loading with proton conducting functional groups.Firstly, dispersed SiO2 nanoparticles will be used for electrospinning to achieve porous SiO2 fibre mats due to interparticular porosity. Subsequently, those porous fibre mats will be functionalized with proton conducting groups. Therefore, especially a newly developed CVD-type method will be used to avoid any mechanical stress on the fibre mat.For comparison and to achieve high intrinsic proton conduction of the resulting fibre mats, dispersions of mesoporous SiO2 nanoparticles, modified with either sulfonic acid groups or benzimidazole groups, will be used for electrospinning. Variations of the size and the pore structure of the nanoparticles are planned to optimize the proton conduction of the resulting fibre mats at low relative humidities.The produced fibre mats will be investigated concerning their temperature- and humidity-dependent proton conduction via impedance spectroscopy.Subsequently, the fibre mats will be infiltrated either with Nafion or sPEEK, and the humidity- and temperature-dependent proton conduction of the composite membranes will be investigated. Moreover, these novel fibre mats will be applied in photoelectrochemical cells for photoelectrochemical water splitting.

该项目的目的是通过静电纺丝合成柔性SIO2纤维垫，该纤维纤维将用磺酸或苯咪唑基团功能化，以进行高质子传导。将采取不同的策略来实现具有高孔隙率的电纺纳米纤维，以使质子传导功能组高载荷。随后，这些多孔纤维垫将通过质子导电组功能化。因此，尤其将使用一种新开发的CVD型方法来避免对纤维垫的任何机械应力。进行比较并实现所得纤维垫的高固有质子传导，使用磺酸群或苯二酰胺基团修饰的中孔SIO2纳米粒子的分散体，用于用于电子苏维替宁。计划对纳米颗粒的尺寸和孔结构的变化进行变化，以优化低相对湿度下所得的纤维垫的质子传导。将调查所产生的纤维垫子，以通过液化量和脉络均取消液体，并将官方均取消，并与官方的脉络均取决于官方，并与官方均取决于官方，并与官方均取决于官方，并与官方均取决于官方，并取得了官方的态度。将研究复合膜的传导。此外，这些新型的纤维垫将应用于光电化学细胞中，以进行光电化学水分裂。