纳米结构的POSS交联聚胺醇具有自由基清除功能,用于高温质子交换膜
Chao Meng1,2, Xiaofeng Hao1,3, Shuanjin Wang1
1The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China.
Nanomaterials (Basel, Switzerland)
|February 12, 2026
概括
这项研究引入了一种新型的高温质子交换膜 (HT-PEM),使用功能化的多面性寡合性丝素 (POSS) 来提高燃料电池的性能. 新的POSS交联膜显示出增强的氧化稳定性和高质子导电性,用于先进的能源应用.
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:
- 高温质子交换膜 (HT-PEM) 对于高温燃料电池至关重要,但受到酸出和氧化降解的影响.
- 聚-4,4'-二乙烯-5,5'-双胺醇 (OPBI) 是一个有前途的矩阵材料,但其性能需要改进.
研究的目的:
- 开发一种具有增强氧化稳定性和质子导电性的新型HT-PEM.
- 为了研究将功能化的多面 oligomeric silsequioxane (POSS) 纳入OPBI矩阵的效果.
- 为了提高燃料电池应用的HT-PEM的长期性能和耐用性.
主要方法:
- 通过涉及硫基和基乙醇的反应合成功能化的POSS交联剂 (OE-POSS和POSS-S-E).
- 使用环氧氨基合制造交联的OPBI膜 (OPBI-OE-POSS和OPBI-POSS-S-E).
- 使用芬顿试剂评估氧化稳定性,并在高温下测量质子导电性.
主要成果:
- OPBI-POSS-S-E膜表现出卓越的氧化稳定性,在80°C的芬顿试剂中经过108小时后,它们的重量保持了79.4%.
- 具有保留硫基的POSS-S-E交叉连接器提供了自由基清除,提高了膜耐用性.
- 用PA合的OPBI-POSS-S-E-20%膜在160°C时实现了50.8mS cm-1的质子导电性.
- 膜电极组件的峰值功率密度为724 mW cm-2.
结论:
- 功能化的POSS作为一个有效的纳米修饰器来提高HT-PEM性能.
- 开发的OPBI-POSS-S-E膜为耐用和高效的高温燃料电池提供了一个有前途的解决方案.
- 整合POSS显著提高了OPBI型HT-PEM的氧化稳定性和质子导电性.
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