通过LiCl对一个多孔协调聚合物的合成后修饰,以增强H+运输
Satoshi Horike1, Yusuke Kamitsubo, Munehiro Inukai
1Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Kyoto 615-8510, Japan. horike@sbchem.kyoto-u.ac.jp
Journal of the American Chemical Society
|March 15, 2013
概括
研究人员通过添加化来增强协调聚合物的质子 (H+) 导电性. 这种材料实现了高导电性,在聚合物通道内的离子运动的支持下.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 电化学 电化学 电化学
背景情况:
- 多孔协调聚合物为离子运输提供可调节的结构.
- 提高质子 (H+) 导电性对于燃料电池等能源应用至关重要.
- 现有材料的功能化可以提高其性能.
研究的目的:
- 为了提高 (Ca2+) 基多孔协调聚合物的质子 (H+) 导电性.
- 为了研究改善质子导电性背后的机制.
- 评估材料在特定条件下的性能.
主要方法:
- 使用LiCl.Cl的Ca(2+) 多孔协调聚合物的合成后功能化.
- 在25°C和20%的相对湿度下测量质子导电性.
- 脉冲场梯度核磁共振 (PFG-NMR) 谱学以阐明离子传输机制.
主要成果:
- 功能化材料的质子导电率超过了10−2 S cm−1.
- 在环境温度 (25°C) 和相对湿度低 (20%) 的环境下观察到高导电性.
- PFG-NMR证实,Li+离子运动促进了1D通道内的快速H+运输.
结论:
- 合成后的LiCl添加有效地提高了Ca2+) 多孔协调聚合物的质子导电性.
- 该材料展示了在温和条件下需要高效的质子传输的应用的潜力.
- +离子的协同效应是实现功能化通道中高质子流动性的关键.
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