用于燃料电池应用的高导电性和稳定性的胺交叉连接添加类型双阻断聚 ((Norbornene) 基离子交换膜
Quan Li1, Xiaohui He1, Ling Feng1
1School of Physics and Materials Science, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China.
Polymers
|January 8, 2025
概括
研究人员开发了先进的离子交换膜 (AEMs),使用水友交联和灵活的氧间隔器. 这些新的AEM显示高导电性和优良的性稳定性用于燃料电池应用.
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
- 聚合物科学 聚合物科学
背景情况:
- 阳离子交换膜 (AEM) 对燃料电池至关重要,但通常具有较差的导电性,性稳定性和维度稳定性.
- 有效的离子运输通道是提高AEM性能,特别是导电性和减少胀的关键.
研究的目的:
- 开发具有增强导电性和性稳定性的高性能AEM.
- 为了研究交叉连接程度对AEM属性的影响.
- 探索一种新的策略,结合水友性交联和灵活的氧间隔器.
主要方法:
- 通过全碳块共聚合物骨干水友性交联来合成AEMs.
- 在聚合物结构中引入柔性氧间隔链.
- 对AEMs的氧导电性,吸水率,膨胀率和性稳定性的表征.
- 单一燃料电池的制造和测试使用开发的AEMs.
主要成果:
- 在80°C时,CL30-aPNB-TMHDA-TMA膜实现了138.84mS cm-1的高氧导电性.
- 膜表现出14.07%的低膨胀率和54.96%的合理吸水率.
- 观察到出色的性稳定性,离子交换能力和导电性保持91.9%和89.12%在1008小时后在1M NaOH在80°C.
- 单电池在80°C时达到266.2mW cm-2的峰值功率密度.
结论:
- 开发的复合策略有效地创造了高效的离子运输道,从而产生了高性能的AEM.
- 水友性交联和灵活的氧间隔器对设计具有优越导电性和稳定性的AEM有希望.
- 该研究为推进燃料电池应用的AEM技术提供了一种多功能方法.
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