增强的燃料电池性能与坚固的皮里迪尼-衍生-功能化的SBS Triblock共聚合物离子交换膜
Beyadgalem Endawoke Anley1, Yohannis Wondwosen Ahmed1, Afandi Yusuf2
1Graduate Institutes of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan.
ACS applied materials & interfaces
|January 20, 2026
概括
新的基于聚乙烯 - 块 - 聚乙烯 - 块 - 聚乙烯 (SBS) 的离子交换膜 (AEM) 与衍生物功能化,显示了提高燃料电池性能和性稳定性. 这些基于SBS的先进AEM为下一代能源技术提供了有前途的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 电化学 电化学 电化学
背景情况:
- 阳离子交换膜 (AEM) 对性燃料电池至关重要.
- 开发稳定和高性能的AEM仍然是一个关键的挑战.
- 聚乙烯-块-聚乙烯-块-聚乙烯 (SBS) 为AEM开发提供了一个多功能平台.
研究的目的:
- 合成和描述基于SBS的新型AEMs,其功能与衍生物 (SBS-QA+py) 相结合.
- 为了研究结构-属性关系,规范膜性能.
- 评估这些AEM在高性能燃料电池应用中的潜力.
主要方法:
- 在SBS中使用亚博 (AIBN) 化聚二烯段的自由基.
- 通过溶液造对化SBS进行四级化,形成SBS-QA+py AEMs.
- 离子交换能力 (IEC),水吸收 (WU),离子导电性和机械性能的表征.
- 在H2/O2燃料电池中的性能评估和性介质中的化学稳定性测试.
主要成果:
- SBS-QA+py膜展示了受控的IEC和WU,平衡水分和机械完整性.
- 聚烯和二烯片段之间的非共价堆叠相互作用增强了膜特性.
- 在80°C时,SBS-Qdpy2 AEM实现了101.23 mS cm-1的峰值离子导电率和398.14 mW cm-2的峰值功率密度.
- 在1M NaOH中超过30天观察到出色的化学耐用性,显示出优越的性稳定性.
结论:
- 优化的离子交换和膜形态对于提高燃料电池性能至关重要.
- 与之前基于SBS的AEM相比,SBS-QA+py AEM显示出更高的性能和稳定性.
- 这些膜是下一代性燃料电池的有希望的候选者.
- 接种,四级化和交叉链接的进一步优化可以导致具有选择性的纳米离子通道的稳定AEM,以实现高效的离子扩散.
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