聚胺醇强化烯离子交换水电解膜
Rossana Gentile1, Sabrina C Zignani2, Marta Zatoń1
1ICGM, Université de Montpellier, CNRS, ENSCM, 34095, Montpellier, France.
ChemSusChem
|August 19, 2024
概括
这项研究引入了强化离子交换膜 (AEMs),通过离子交换膜水电解 (AEMWE) 有效地生产. 新型膜显示了减少交叉和增强机械强度,改善了AEMWE的性能.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 阴离子交换膜水电解 (AEMWE) 为生产提供了一个有前途的途径,将质子交换膜 (PEM) 和电解的好处合并在一起.
- 改进高氧化物导电性,低气体透性和增强耐用性的AEM对于推进AEMWE技术至关重要.
- 当前的AEM在平衡机械完整性与离子导电性和气体屏障性质方面面临着挑战.
研究的目的:
- 为提高AEMWE性能,开发和评估用聚合物纤维增强的新型离子交换膜 (AEMs),包括聚[2,2'-(p-oxydiphenylene)-5,5'-benzimidazole] (PBIO) 聚合物纤维.
- 调查PBIO增强对膜特性的影响,包括机械强度,导电性和气体交叉.
- 评估无PGM单细胞AEMWE中强化膜的长期稳定性和性能.
主要方法:
- 通过电制造PBIO纤维网的制造,然后浸到聚甲烯 (mTPN) 离子体中,以制造强化膜.
- 强化和非强化膜对氧化离子导电性,热稳定性,尺寸膨胀,机械性能和交叉的表征.
- 用PBIO增强的mTPN膜在5cm2的无PGM的AEMWE单细胞中进行性能测试,使用NiFe氧化物阳极和NiMo阴极催化剂.
主要成果:
- PBIO纳米纤维增强显著减少了交叉,并改善了mTPN膜的拉伸性能,而不会影响氧化物导电性.
- 强化膜表现出强大的表面相互作用和在膜厚度的均强化分布.
- 使用PBIO增强的mTPN膜的AEMWE单电池在260小时内显示了持续的性能改善,在1.0A/cm2时达到2.06V.
结论:
- 聚合物纤维增强是一种有效的策略,可以提高AEMWE的机械性能并减少AEMs中的气体交叉.
- 开发的PBIO增强的mTPN膜显示了使用无PGM催化剂高效和持久生产的巨大潜力.
- 这项研究强调了先进材料的成功整合,以提高在离子交换膜水电解中的性能.
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