用于中温操作的离子液体/聚苯并咪唑/二氧化硅复合膜

IF 3 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Solid State Ionics Pub Date : 2024-10-23 DOI:10.1016/j.ssi.2024.116720

Yuliya A. Fadeeva, Liudmila E. Shmukler, Liubov P. Safonova

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引用次数: 0

摘要

带有质子交换膜（PEM）的燃料电池（FC）因其高效率、功率密度、低排放和可靠的能源供应而被视为一种替代能源。基于聚苯并咪唑的质子交换膜已显示出在高温和中温条件下工作以提高燃料电池性能的潜力。本研究采用溶液浇铸法制备了由 m-PBI 和甲磺酸二乙胺 [DEAH/MsO] 离子液体制成的新型复合膜。纳米二氧化硅（SiO2）被用作不同浓度（0.5-20 wt%）的无机填料。膜中离子液体的含量范围为每摩尔 PBI 单体单元 1 至 2.5 摩尔。我们的研究重点是膜的热性能，如热稳定性和相变温度、形态、导电性和电化学稳定性。我们还讨论了无机填料对这些特性的影响。

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Ionic liquid/polybenzimidazole/SiO2 composite membranes for medium temperature operating

Fuel cells (FC) with proton exchange membranes (PEMs) are seen as an alternative energy source due to their efficiency, power density, low emissions, and reliable energy supply. Proton exchange membranes based on polybenzimidazole have shown potential for operating at high and medium temperatures to enhance FCs performance. New composite membranes made from m-PBI and diethylammonium mesylate [DEAH/MsO] ionic liquid were prepared trough a solution casting method. Silica nanopowder (SiO₂) was used as an inorganic filler at varying concentrations (0.5–20 wt%). The ionic liquid content in the membranes ranged from 1 to 2.5 mol per mole of PBI monomer units. Our study is focused on the thermal properties, such as thermal stability and phase transition temperatures, morphology, conductivity, and electrochemical stability of the membranes. The influence of the inorganic filler on these properties was also discussed.

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来源期刊

Solid State Ionics 物理-物理：凝聚态物理

CiteScore

6.10

自引率

3.10%

发文量

152

审稿时长

58 days

期刊介绍： This interdisciplinary journal is devoted to the physics, chemistry and materials science of diffusion, mass transport, and reactivity of solids. The major part of each issue is devoted to articles on: (i) physics and chemistry of defects in solids; (ii) reactions in and on solids, e.g. intercalation, corrosion, oxidation, sintering; (iii) ion transport measurements, mechanisms and theory; (iv) solid state electrochemistry; (v) ionically-electronically mixed conducting solids. Related technological applications are also included, provided their characteristics are interpreted in terms of the basic solid state properties. Review papers and relevant symposium proceedings are welcome.