Li Wenjie, Hao Zhendong, Cao Shihai, Chen Silin, Wang Xue, Yin Huimin, Tao Xuewei, Dai Yuming, Cong Yuan, Ju Jia
School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing, 211167, P. R. China.
College of Environmental Engineering, Nanjing Institute of Technology, Nanjing, 211167, China.
Small. 2024 Nov;20(46):e2405396. doi: 10.1002/smll.202405396. Epub 2024 Aug 13.
Covalent organic frameworks (COFs) are promising porous materials due to their high specific surface area, adjustable structure, highly ordered nanochannels, and abundant functional groups, which brings about wide applications in the field of gas adsorption, hydrogen storage, optics, and so forth. In recent years, COFs have attracted considerable attention in electrochemical energy storage and conversion. Specifically, COF-based functional separators are ideal candidates for addressing the ionic transport-related issues in high-energy batteries, such as dendritic formation and shuttle effect. Therefore, it is necessary to make a comprehensive understanding of the mechanism of COFs in functional separators. In this review, the advantages, applications as well as synthesis of COFs are firstly presented. Then, the mechanism of COFs in functional separators for high-energy batteries is summarized in detail, including pore channels regulating ionic transport, functional groups regulating ionic transport, adsorption effect, and catalytic effect. Finally, the application prospect of COFs-based separators in high-energy batteries is proposed. This review may provide new insights into the design of functional separators for advanced electrochemical energy storage and conversion systems.
共价有机框架材料（COFs）因其高比表面积、可调节结构、高度有序的纳米通道以及丰富的官能团而成为有前景的多孔材料，这使其在气体吸附、储氢、光学等领域有着广泛应用。近年来，COFs在电化学能量存储与转换方面备受关注。具体而言，基于COF的功能隔膜是解决高能电池中与离子传输相关问题（如枝晶形成和穿梭效应）的理想候选材料。因此，有必要全面了解COFs在功能隔膜中的作用机制。在本综述中，首先介绍了COFs的优点、应用以及合成方法。然后，详细总结了COFs在高能电池功能隔膜中的作用机制，包括孔道调节离子传输、官能团调节离子传输、吸附作用和催化作用。最后，提出了基于COF的隔膜在高能电池中的应用前景。本综述可为先进电化学能量存储与转换系统功能隔膜的设计提供新的见解。
