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用纳米钻石修饰的 perfluorinated copolymers 的膜的电化学特性和结构

Vasily T Lebedev¹, Yuri V Kulvelis¹, Alexandr V Shvidchenko²

¹Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Center "Kurchatov Institute", 188300 Gatchina, Russia.

|November 24, 2023

概括

经过气和纳米钻石修改的质子导电膜显示出增强的导电性. 带正电荷的纳米钻石通过在Aquivion®类型的共聚物中与硫酸组形成更好的接口来改善离子运输.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
纳米技术纳米技术

背景情况:

质子导电膜对于燃料电池等电化学装置至关重要.
Aquivion®型共聚合物提供了一个有前途的基材,但它们的导电性可以进一步优化.
纳米钻石是由于其独特的表面化学和尺寸而改变膜性质的新方法.

研究的目的:

设计和研究基于Aquivion®类型材料的质子导电膜,这些材料使用爆炸纳米钻石进行了修改.
探索纳米钻石上的不同功能组如何影响膜结构和离子导电性.
为了建立复合结构和质子导电性之间的相关性.

主要方法:

通过分散引爆纳米钻 (0.25-5.0重量) 来制备复合膜. %) 具有不同的功能组 (H,OH,COOH,F) 变成Aquivion®类型的共聚物.
通过溶液造,溶剂去除和热处理来制造 -SO3H离子群的膜制造.
使用中子散射实验对质子导电性和结构特征的分析.

主要成果:

具有和的表面和正电荷的纳米钻石显著增加了质子导电性.
负电荷的纳米钻石增强了与硫酸组的导电接口,与负电荷的碳酸纳米钻石不同.
化纳米钻石通过破坏离子通道连接来大大降低导电性,即使在低度 (1重量) 中也是如此. 百分之一). %).

结论:

纳米钻石的功能化对于定制复合膜中的质子导电性至关重要.
气和,正电荷的纳米钻石有效地增强了基于Aquivion®的膜中的质子运输.
了解纳米钻石-共聚合物接口和离子通道网络是优化膜性能的关键.

关键词:

复合结构结构的复合结构离子通道离子通道离子通道这些是纳米钻石.perfluorosulfonic 酸的膜膜是可以使用的.质子导电性的质子导电性.质子交换膜中的质子交换膜.短侧链链短侧链链链条微角中子散射是一种小角度的中子散射.

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