Escorihuela Jorge, García-Bernabé Abel, Montero Alvaro, Andrio Andreu, Sahuquillo Óscar, Gimenez Enrique, Compañ Vicente
Departamento de Termodinámica Aplicada (ETSII), Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain.
Departament de Química Orgànica, Universitat de València, Av. Vicent Andrés Estellés s/n, Burjassot, 46100 Valencia, Spain.
Polymers (Basel). 2019 Jul 14;11(7):1182. doi: 10.3390/polym11071182.
The quest for sustainable and more efficient energy-converting devices has been the focus of researchers' efforts in the past decades. In this study, SiO nanofiber mats were fabricated through an electrospinning process and later functionalized using silane chemistry to introduce different polar groups -OH (neutral), -SOH (acidic) and -NH (basic). The modified nanofiber mats were embedded in PBI to fabricate mixed matrix membranes. The incorporation of these nanofiber mats in the PBI matrix showed an improvement in the chemical and thermal stability of the composite membranes. Proton conduction measurements show that PBI composite membranes containing nanofiber mats with basic groups showed higher proton conductivities, reaching values as high as 4 mS·cm at 200 °C.
在过去几十年里，寻求可持续且更高效的能量转换装置一直是研究人员努力的焦点。在本研究中，通过静电纺丝工艺制备了SiO纳米纤维垫，随后利用硅烷化学方法对其进行功能化处理，以引入不同的极性基团——-OH（中性）、-SOH（酸性）和-NH（碱性）。将改性后的纳米纤维垫嵌入聚苯并咪唑（PBI）中，制备出混合基质膜。这些纳米纤维垫在PBI基质中的掺入显示出复合膜的化学稳定性和热稳定性有所提高。质子传导测量表明，含有碱性基团纳米纤维垫的PBI复合膜表现出更高的质子电导率，在200℃时达到高达4 mS·cm的值。
