金属有机框架质子导体及其质子交换膜应用研究进展

摘要/Abstract

摘要： 质子交换膜(PEMs)在燃料电池中起到关键作用,它分离了阴极和阳极,提供了质子传输通道,阻隔了燃料在电池中的渗透。以Nafion为代表的全氟磺酸膜具有优异的化学稳定性、优异的热稳定性和较高的质子传导率,但也存在成本较高、高温下机械性能较差和质子传导率低,以及易降解等问题。金属有机框架结构(MOFs)具有孔隙率高、比表面积大和内部孔道可调控等优点,作为PEMs的潜在材料,直接用于质子导体或用于修饰、改进现有的离子型高分子PEMs,取得了一系列重要进展。本文综述了MOFs结构质子导体常见的四种质子传导方式,总结了MOFs在不同类型离子型聚合物的复合PEMs中的相关研究,并指出了MOFs质子导体在PEMs应用中存在的问题,为其进一步开发和应用提供参考。

关键词: 金属有机框架, 质子传导, 氢键网络, 质子交换膜, 燃料电池

Abstract: Proton exchange membranes (PEMs) have key functions in fuel cells. They separate the cathode and anode, provide channel for proton transport, and block the fuel permeation in the battery. Perfluorosulfonic acid membrane like Nafion has excellent chemical stability, thermal stability, and high proton conductivity. However, it also has problems such as high cost, poor mechanical performance and low proton conductivity at high temperatures, and easy degradation. Metal organic frameworks (MOFs) are attractive candidates for PEMs due to their high porosity, large specific surface area and controllable internal channels. MOFs have been used as proton conductors directly, or to modify and improve the existing ionic polymer PEMs, and a series of important progresses have been achieved. In this paper, four common proton conduction modes of MOFs structure proton conductors are reviewed, and the related studies of MOFs in different types of ionic polymer composite PEMs are summarized. Moreover, current issues on MOFs proton conductors and their PEMs are pointed out, which provides references and ideas for the development and application of MOFs as PEMs.

Key words: metal-organic framework, proton conduction, hydrogen bonding network, proton exchange membrane, fuel cell

中图分类号:

付凤艳, 王晓红, 高志华, 邢广恩, 张彦, 范培. 金属有机框架质子导体及其质子交换膜应用研究进展[J]. 人工晶体学报, 2024, 53(2): 218-230.

FU Fengyan, WANG Xiaohong, GAO Zhihua, XING Guang'en, ZHANG Yan, FAN Pei. Research Progress on Metal Organic Frameworks Proton Conductor and Their Applications in Proton Exchange Membranes[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(2): 218-230.

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