对于低湿度的快速质子导体:含有Al-O-P交叉连接的性硫化和化聚二二氧化
Hirotaka Itakura1, Masanao Ishijima1, Koichi Kajihara1
1Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan. kkaji@tmu.ac.jp.
Chemical communications (Cambridge, England)
|May 7, 2024
概括
具有硫酸组的新型质子导电聚合物在高温和低湿度下提供高导电性. 这些材料对在具有挑战性的条件下运行的燃料电池应用具有前景.
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:
- 开发高效的质子导体对于推进燃料电池技术至关重要.
- 现有的材料通常在低湿度和高温下表现不佳.
- 聚二氧化寡合物为设计新型功能材料提供了一个多功能平台.
研究的目的:
- 为了合成和描述新型的导质子聚二氧化寡合体.
- 在非加湿的高温条件下研究这些材料的质子导电性.
- 探索这些聚合物在燃料电池应用中的潜力.
主要方法:
- 合成核心外结构的多聚二氧化寡合物与含性芯和含有硫酸和酸组的有机层.
- 使用酸和离子交叉连接寡合物,形成水友性Al-O-P框架.
- 聚合物性质的表征,包括在不同温度和湿度下测量聚合物的均性,灵活性和质子导电性.
主要成果:
- 成功合成了透明,均和灵活的质子导电聚合物.
- 在非加湿,低湿度空气下,达到高质子导电性 (≤22 mS cm-1在120 °C和≤1%的RH).
- 证明了高硫酸度和优良的保留水的能力,有助于导电性.
结论:
- 在高温和低湿度下,合成的基于poly-silsesquioxane的聚合物表现出极好的质子导电性.
- 独特的核心外结构和Al-O-P框架有助于材料的高性能.
- 这些材料代表了燃料电池电解质在苛刻条件下运行的有希望的进步.
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