基于聚苯并咪唑和甲磺酸盐质子离子液体的复合聚合物电解质膜的研究

Studies on Polybenzimidazole and Methanesulfonate Protic-Ionic-Liquids-Based Composite Polymer Electrolyte Membranes.

作者信息

Anis Arfat, Alam Manawwer, Alhamidi Abdullah, Gupta Ravindra Kumar, Tariq Mohammad, Al-Zahrani Saeed M

机构信息

SABIC Polymer Research Center (SPRC), Chemical Engineering Department, King Saud University, Riyadh 11421, Saudi Arabia.

Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.

出版信息

Polymers (Basel). 2023 Jun 26;15(13):2821. doi: 10.3390/polym15132821.

DOI:10.3390/polym15132821

PMID:37447466

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10347016/

Abstract

In the present work, different methanesulfonate-based protic ionic liquids (PILs) were synthesized and their structural characterization was performed using FTIR, H, and C NMR spectroscopy. Their thermal behavior and stability were studied using DSC and TGA, respectively, and EIS was used to study the ionic conductivity of these PILs. The PIL, which was diethanolammonium-methanesulfonate-based due to its compatibility with polybenzimidazole (PBI) to form composite membranes, was used to prepare proton-conducting polymer electrolyte membranes (PEMs) for prospective high-temperature fuel cell application. The prepared PEMs were further characterized using FTIR, DSC, TGA, SEM, and EIS. The FTIR results indicated good interaction among the PEM components and the DSC results suggested good miscibility and a plasticizing effect of the incorporated PIL in the PBI polymer matrix. All the PEMs showed good thermal stability and good proton conductivity for prospective high-temperature fuel cell application.

摘要

在本工作中，合成了不同的基于甲磺酸盐的质子离子液体（PILs），并使用傅里叶变换红外光谱（FTIR）、氢核磁共振（¹H NMR）和碳核磁共振（¹³C NMR）光谱对其进行了结构表征。分别使用差示扫描量热法（DSC）和热重分析法（TGA）研究了它们的热行为和稳定性，并使用电化学阻抗谱（EIS）研究了这些PILs的离子电导率。由于基于二乙醇铵甲磺酸盐的PIL与聚苯并咪唑（PBI）具有相容性，可形成复合膜，因此被用于制备用于预期高温燃料电池应用的质子传导聚合物电解质膜（PEMs）。使用FTIR、DSC、TGA、扫描电子显微镜（SEM）和EIS对制备的PEMs进行了进一步表征。FTIR结果表明PEM组件之间存在良好的相互作用，DSC结果表明掺入的PIL在PBI聚合物基体中具有良好的混溶性和增塑作用。所有PEMs对于预期的高温燃料电池应用均表现出良好的热稳定性和良好的质子传导率。