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形,块接头共聚合物与对齐的领域,用于高性能碳化合物聚合物电解质膜

So Youn Lee¹, Du Ru Kang¹, Jong-Gil Oh²

¹Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.

Angewandte Chemie (International ed. in English)

|May 10, 2024

概括

这项研究引入了一种新的无聚合物电解质膜 (PEM),使用独特的形. 这种设计可以为清洁能源应用提供高效的质子传输,为传统材料提供可持续的替代方案.

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:

perfluorinated sulfonic acid (PFSAs) 对于燃料电池和水电解等清洁能源技术来说是昂贵和环境问题.
在聚合物电解质膜 (PEM) 中需要高性能,成本效益和可持续的 PFSAs 替代品.

研究的目的:

开发一种无的聚合物电解质膜 (PEM),作为PFSAs的可持续替代品.
研究一种新型的形块接种共聚合物对质子运输和膜性能的影响.
评估基于碳化合物的PEM在燃料电池和水电解中的潜力.

主要方法:

从聚乙烯-乙烯-co-butylene-b-styrene (SEBS) 中合成一个无的贝形块接种共聚合物.
使用新型共聚合物制造聚合物电解质膜 (PEMs).
膜形态,质子导电性和离子交换能力 (IEC) 的表征.
膜电极组件 (MEAs) 在燃料电池或电解应用中的性能和稳定性的测试.

主要成果:

形共聚合物形成了对齐的疏水性-疏水性域,形成了相互连接的质子通道,扭曲性降低.
在80°C和90%的RH下达到249mS/cm的异常离子导电性,尽管IEC的低值为1.41.
在苛刻的条件下 (80°C,30%RH) 经过150小时的稳定膜电极组件 (MEA) 性能证明.

结论:

一种新的无化物,子形块接种共聚合物为高性能聚合物电解质膜 (PEM) 提供了一个有前途的途径.
独特的聚合物架构促进了高效的质子传输,使其成为昂贵和环境持久的PFSAs的可行替代品.
这项研究强调了基于碳化合物的PEMs在推进清洁能源技术方面的潜力.

关键词:

连续通道连续通道.植入共聚合物植入共聚合物碳化合物聚合物的电解质膜.微相分离的微相分离方法三重阻断共聚合物的共聚物.

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