在从零度以下到中等温度的广泛范围内,含有伊米达的半孔聚合物具有高无水质质子导电性
Yingxiang Ye1, Liuqin Zhang, Qinfang Peng
1College of Chemistry and Chemical Engineering, Fujian Provincial Key Laboratory of Polymer Materials, Fujian Normal University , 32 Shangsan Road, Fuzhou 350007, China.
Journal of the American Chemical Society
|January 1, 2015
概括
新的带有伊米达的聚合物为燃料电池提供高无水质子导电性,在广泛的温度范围内,从-40到90°C,克服了当前材料的局限性.
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
- 化学工程是化学工程的重要组成部分.
背景情况:
- 燃料电池技术要求在各种温度下具有稳定的导电性质子导体,包括启动的零下条件.
- 现有的质子导体在高温 (>80°C) 时常降解,在低温 (<-5°C) 时常结.
研究的目的:
- 在广泛的温度范围内 (-40~90°C) 开发具有高无水导电性的新型质子导电材料.
- 解决当前易受热降解和结的材料的局限性.
主要方法:
- 合成带有伊米达的四面体聚化物,具有中孔结构 (Im@Td-PNDI 1和Im@Td-PPI 2).
- 在广泛的温度谱中评估无水质子导电性,包括零下和高温条件.
主要成果:
- Im@Td-PNDI 1 和 Im@Td-PPI 2 显示了高无水质质子导电性,从-40°C到90°C.
- 与其他无水导体相比,材料2在40°C以下表现出优越的导电性.
- 材料2在40°C以上的导电性与最先进的材料,如His@[Al(OH) ((1,4-ndc) ]n和[Zn3 ((H2PO4) 6 ((H2O) 3) ((Hbim) ]相提并论.
结论:
- 含有伊米达的四面体聚合物具有出色的热和冷稳定性.
- 这些材料显示出作为无水质质子导体在各种气候条件下用于燃料电池应用的显著前景.
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