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石氨酸衍生聚合物连接聚氧甲酸盐的界面工程架构及其在硫化聚 (?? 烯乙烯基) 质子交换膜中的应用

Jiawang Fu¹, Yang Yang¹, Qiuchen Du¹

¹School of Chemistry and Environmental Engineering, Changchun University of Science and Technology Changchun 130022, P. R. China.

ACS applied materials & interfaces

|December 16, 2025

概括

这项研究使用异酸衍生聚合物和酸设计了高性能质子交换膜. 新型膜显示了燃料电池应用的增强导电性,机械强度和耐久性.

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
聚合物化学聚合物化学

背景情况:

质子交换膜 (PEMs) 对燃料电池性能至关重要.
现有的PEM面临着平衡导电性,机械强度和稳定性的挑战.
接口工程提供了一条克服这些局限性的途径.

研究的目的:

通过接口工程开发高性能PEM.
通过将功能填充剂集成到聚合物矩阵中来增强PEM特性.
解决聚电解质材料中导电性和机械稳定性之间的权衡问题.

主要方法:

使用硫聚乙基 (SPAEK) 基质制造PEM.
作为功能填充剂,将以异酸衍生聚合物 (PIB) 固的Keggin型酸 (PW) 纳入.
膜性质的表征包括机械强度,尺寸稳定性,质子导电性,甲醇透性,氧化稳定性和运行耐久性.

主要成果:

PISm/PW-x膜表现出增强的机械强度 (46.1 MPa) 和尺寸稳定性 (6.25%的膨胀).
质子导电性显著改善 (0.192 S cm-1 在80°C),比原始膜高2.15倍.
优化的PIS1/PW-8膜显示了极其有限的甲醇透性 (1.82 × 10−8 cm2−1),优越的氧化稳定性 (99.4%的保留率) 和耐久性 (>100小时).

结论:

有机-无机接口的分子级工程是先进PEM的可行策略.
开发的膜同时解决导电性和机械稳定性的权衡问题.
这种方法为设计下一代燃料电池膜提供了一个范例.

关键词:

离子交叉连接离子交叉连接微相分离的微相分离方法聚氧甲基酸盐是一种多氧甲基酸盐.质子交换膜质子交换膜超酸催化共聚的共聚化.

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