耐疲劳的聚合物电解质膜用于燃料电池
Minju Kim1, Guogao Zhang2, Segeun Jang3
1Department of Mechanical Engineering, Incheon National University, Incheon, 22012, Republic of Korea.
Advanced materials (Deerfield Beach, Fla.)
|December 31, 2023
概括
为燃料电池开发了一种新的聚合物电解质膜,提高了耐用性. 通过创建塑料和的相互透网络,膜显著增加了耐疲劳性和寿命.
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
- 聚合物科学 聚合物科学
背景情况:
- 燃料电池利用电解质膜进行质子导电,这对运行至关重要.
- 不稳定的燃料电池运行会导致膜膨胀/收缩,导致疲劳和寿命缩短.
- 开发耐疲劳膜对于持久的燃料电池技术至关重要.
研究的目的:
- 为燃料电池设计一种耐疲劳的聚合物电解质膜.
- 提高燃料电池组件的机械耐用性和使用寿命.
主要方法:
- 使用塑料电解质和材料制造一个相互透的聚合物网络 (IPN) 膜.
- 描述IPN膜的电化学性能和耐疲劳性.
- 在加速压力条件下,使用原始和IPN膜测试燃料电池.
主要成果:
- 与原始的Nafion相比,Nafion-PFPE ( perfluoropolyether) IPN膜显示疲劳值增加了175%.
- 对于IPN膜,观察到最大功率密度的适度降低20%.
- 使用Nafion-PFPE膜的燃料电池在潮湿/干燥应力测试中寿命长1.7倍.
结论:
- 相互透的网络方法成功地提高了聚合物电解质膜的耐疲劳性和寿命.
- 电化学性能和机械耐用性之间的权衡可以管理,以改善燃料电池的寿命.
- 这一战略为开发更强大的燃料电池系统提供了一个有希望的途径.
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