Lim Dae-Woon, Kitagawa Hiroshi
Department of Chemistry and Medical Chemistry, College of Science and Technology, Yonsei University, 1 Yonseidae-gil, Wonju, Gangwon-do 26493, Republic of Korea.
Chem Soc Rev. 2021 Jun 8;50(11):6349-6368. doi: 10.1039/d1cs00004g.
Since the transition of energy platforms, proton-conducting materials have played a significant role in broad applications for electrochemical devices. In particular, solid-state proton conductors (SSPCs) are emerging as the electrolyte in fuel cells (FC), a promising power generation technology, because of their high performance and safety for operating in a wide range of temperatures. In recent years, proton-conductive porous metal-organic frameworks (MOFs) exhibiting high proton-conducting properties (>10-2 S cm-1) have been extensively investigated due to their potential application in solid-state electrolytes. Their structural designability, crystallinity, and porosity are beneficial to fabricate a new type of proton conductor, providing a comprehensive conduction mechanism. For the proton-conductive MOFs, each component, such as the metal centres, organic linkers, and pore space, is manipulated by a judicious predesign strategy or post-synthetic modification to improve the mobile proton concentration with an efficient conducting pathway. In this review, we highlight rational design strategies for highly proton-conductive MOFs in terms of MOF components, with representative examples from recent years. Subsequently, we discuss the challenges and future directions for the design of proton-conductive MOFs.
自从能源平台转型以来，质子传导材料在电化学装置的广泛应用中发挥了重要作用。特别是，固态质子导体（SSPCs）作为燃料电池（FC）中的电解质正在兴起，燃料电池是一种很有前景的发电技术，因为它们在很宽的温度范围内运行具有高性能和安全性。近年来，由于质子传导多孔金属有机框架（MOFs）在固态电解质中的潜在应用，具有高质子传导性能（>10-2 S cm-1）的这类材料受到了广泛研究。它们的结构可设计性、结晶性和孔隙率有利于制造新型质子导体，提供全面的传导机制。对于质子传导MOFs，每个组分，如金属中心、有机连接体和孔隙空间，都通过明智的预设计策略或后合成修饰来调控，以通过有效的传导途径提高可移动质子浓度。在这篇综述中，我们以近年来的代表性实例，从MOF组分的角度突出了高质子传导MOFs的合理设计策略。随后，我们讨论了质子传导MOFs设计面临的挑战和未来方向。
