混合膜硫化聚 ((乙烯基硫) 修改由聚集群与增强的质子导电性的混合膜
Fang Ji1, Fengyu Jiang1, Hongwei Luo1
1School of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, 130012, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|March 26, 2024
概括
新型混合质子交换膜 (PEMs) 将聚氧甲酸集群纳入硫化聚乙烯基硫中,显示显著提高质子导电性和燃料电池性能,为Nafion提供了有希望的替代品.
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:
- 开发具有成本效益和高性能的质子交换膜 (PEM) 对于推进燃料电池技术至关重要.
- 目前的行业标准Nafion在某些条件下面临成本和性能方面的限制.
- 混合膜提供了一种策略,可以将不同材料的理想特性结合起来.
研究的目的:
- 通过使用聚氧甲酸集群 (2MeIm-{Mo132}) 对硫化聚乙烯基硫 (SPAEKS) 进行兴奋剂,开发新的混合PEM.
- 研究这些混合膜对质子导电性和燃料电池性能的影响.
- 探索基于聚氧甲酸盐的聚合物的潜力,作为质子导电场所.
主要方法:
- 通过将2MeIm-{Mo132}纳入SPAEKS.中来合成混合膜.
- 膜性质的表征,包括保留水和水友通道.
- 在各种温度下测量质子导电性.
- 在质子交换膜燃料电池 (PEMFCs) 中评估膜性能.
主要成果:
- 混合膜SP-2MIMo132-5表现出显著增强的质子导电性 (75mS cm-1在80°C),比原始空间增加82.9%.
- 由于2MeIm-{Mo132}的水友性质,改善了水的保留,促进了质子运输.
- 在PEMFC中,SP-2MIMo132-5膜的最大功率密度为266.2 mW cm−2,远高于原始的SPAEKS (54.6 mW cm−2).
结论:
- 基于聚氧甲酸盐的集群通过创建水友通道来有效地提高质子导电性,以实现高效的质子传输.
- 与传统的SPAEKS相比,开发的混合膜显示出更高的性能,表明它们作为Nafion的替代品的潜力.
- 这项研究为设计高性能PEM提供了一种新的方法,通过利用聚氧甲酸集群作为质子导电场所.
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