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基于四乙烯的两种新型兰坦化金属有机框架,用于超高质子导电

Qi Wu¹, Qianxi Li¹, Wenkang Zou¹

¹School of Chemical Science and Technology, Yunnan University, Kunming 650500, P. R. China. yanzhou@ynu.edu.cn.

Chemical communications (Cambridge, England)

|January 6, 2025

概括

两个新的金属有机框架 (MOF) 由于其多孔结构和水稳定性,具有高质子导电性. 这些发现推动了先进的质子导电材料的开发.

科学领域:

材料科学材料科学材料科学
化学化学化学
纳米技术纳米技术

背景情况:

质子导电性对于燃料电池等能源应用至关重要.
金属有机框架 (MOF) 为离子运输提供可调节的结构.
基于兰化物的MOF在质子导电应用中较少被探索.

研究的目的:

为了合成和描述新的同结构离子兰坦化MOFs.
为了研究这些新的MOF的质子导电性.
阐明MOF结构中的质子转移机制.

主要方法:

胺金属有机框架 (Eu-MOF和Dy-MOF) 的溶热合成.
使用X射线衍射和其他技术进行结构性表征.
在高相对湿度 (RH) 和高温下测量质子导电性.

主要成果:

成功建造了两个同结构的阳离子兰坦化MOF:Eu-MOF和Dy-MOF.
MOFs具有多孔结构和良好的水稳定性.
在98%的RH和90°C下实现了5.35 × 10−2 S cm−1 (Eu-MOF) 和1.22 × 10−2 S cm−1 (Dy-MOF) 的高质子导电性.

结论:

合成的兰化物MOF显示出出色的质子导电性.
不协调的碳酸盐群和二甲基氨基离子对质子运输有所贡献.
基于结构分析和激活能量提出了一种质子转移机制.

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