用于电化学储能设备的二维共价有机骨架 (2D COF) 中的电荷和质量传输机制,Energy & Environmental Science

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用于电化学储能设备的二维共价有机骨架 (2D COF) 中的电荷和质量传输机制
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2023-02-01 , DOI: 10.1039/d2ee02742a
Hanyin Zhang _{1,

2,

3} , Yubo Geng ₁ , Jin Huang ₁ , Zixiao Wang ₁ , Kun Du ₁ , Haoyuan Li _{1,

2}

Affiliation

智能手机和电动汽车的发展需要具有更高容量、更快充电速率和更高安全性的电化学储能设备。开发这些设备的关键是发现更好的电极和电解质材料。近年来，一种新型有机材料——二维共价有机框架（2D COFs）引起了越来越多的关注，并被探索用作金属离子电池、金属电池等储能装置中的电极和电解质材料。和超级电容器。事实上，二维 COF 的纳米级多孔结构及其可调功能的有趣特征为已经充满活力的电化学储能材料领域带来了许多新的可能性。电化学储能装置的性能在很大程度上取决于两个基本过程：电荷和质量（离子）传输。这两个过程都带有电荷流，但具有不同的微观机制。充分理解这些过程对于加速电化学储能设备中二维 COF 的开发至关重要。然而，二维COF的独特特性导致复杂的电荷和质量传输机制，为新研究人员进入该领域创造了障碍。在这里，我们提供了对该主题的最新研究的最新概述，以及用于储能应用的二维 COF 中电荷和质量传输的基本要素的总结。还讨论了用于储能设备的 2D COF 路径。

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Charge and mass transport mechanisms in two-dimensional covalent organic frameworks (2D COFs) for electrochemical energy storage devices

The development of smartphones and electric cars calls for electrochemical energy storage devices with higher capacities, faster charging rates, and improved safety. A key to developing these devices is the discovery of better electrode and electrolyte materials. Over the past few years, a new type of organic materials, two-dimensional covalent organic frameworks (2D COFs), have attracted increasing attention and are explored as both electrode and electrolyte materials in energy storage devices such as metal-ion batteries, metal batteries, and supercapacitors. Indeed, the intriguing features of the nanoscale porous structure of 2D COFs and their tunable functionalities have brought many new possibilities to the already vibrant field of electrochemical energy storage materials. The performances of electrochemical energy storage devices are largely determined by two fundamental processes: charge and mass (ion) transport. Both processes carry the flow of charges but with different microscopic mechanisms. A good understanding of these processes is essential to accelerate the development of 2D COFs in electrochemical energy storage devices. However, the unique characteristics of 2D COFs result in complex charge and mass transport mechanisms, creating a barrier for new researchers to enter this field. Here, we provide a state-of-the-art overview of recent studies into this subject as well as a summary of the fundamental elements of charge and mass transport in 2D COFs for energy storage applications. The paths of 2D COFs for energy storage devices are also discussed. We believe that this review will be helpful to researchers interested in working on 2D COFs and electrochemical energy storage applications.

更新日期：2023-02-01

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