用于混合质子交换膜的酸聚 (?? 乙烯化) - 修饰硫酸聚 (?? 乙烯) 基:增强机械和电化学性能
Zetian Zhang1, Hao Liu1,2, Tiandu Dong1
1State Power Investment Corporation Hydrogen Energy Company, Co., Ltd., Beijing 102600, China.
Polymers
|August 12, 2023
概括
这项研究通过结合SPAEN和PPVBC开发了新的混合质子交换膜 (BPEMs). 这些BPEM表现出改善的机械强度,热稳定性和增强的质子导电性,特别是在干燥条件下.
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:
- 质子交换膜 (PEM) 对燃料电池技术至关重要.
- 硫化聚乙 () (西班牙) 膜具有前景,但需要性能增强.
- 化聚乙化 (PPVBC) 提供了改善膜特性的潜力.
研究的目的:
- 使用SPAEN和PPVBC准备和描述混合质子交换膜 (BPEMs).
- 研究PPVBC含量对SPAEN膜的机械,热和电化学性能的影响.
- 评估这些BPEM在增强燃料电池应用中的潜力.
主要方法:
- 混合质子交换膜 (BPEM) 通过将SPAEN与PPVBC (SPM-x%) 的不同比例混合来合成.
- 测量了膜特性,包括吸水能力,机械强度,热稳定性和质子导电性.
- 分析了质子导电性的形态和异性质.
主要成果:
- 与纯粹的SPAEN膜相比,BPEMs显示了降低的水吸收和增强的机械性能.
- 由于PPVBC的阻燃性,观察到更好的热稳定性.
- 质子导电性显著增强,特别是在相对湿度 (RH) 较低的情况下,SPM-8%显示出卓越的性能 (例如,在50%RH下28mS cm-1).
结论:
- 在BPEM中酸和硫酸组之间的化学复合是有益的.
- PPVBC 兴奋剂有效地增强了 SPAEN 膜的机械和电化学特性.
- 这些新型的BPEM显示出高性能燃料电池应用的巨大潜力,特别是在具有挑战性的操作条件下.
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