Recent Progress of Hexaazatriphenylene-based Electrode Materials for Rechargeable Batteries
Recent Progress of Hexaazatriphenylene-based Electrode Materials for Rechargeable Batteries
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六氮杂苯并菲基充电电池电极材料的最新进展
DOI：
10.1016/j.cattod.2021.09.040
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发表时间：
2021-10
期刊：
影响因子：
5.3
通讯作者：
Wei Huang
中科院分区：
文献类型：
--
作者：
Jiena Weng;Qiao Xi;Xinwei Zeng;Zongqiong Lin;Jianfeng Zhao;Liangliang Zhang;Wei Huang
π共轭有机电极材料（OEMs）以其理论容量空前高、结构设计灵活、环境友好、元素丰富等优点，在可充电电池领域受到广泛关注。具有高密度c双键dn官能团的刚性共面六叠三苯（HAT）基本构建单元，不仅有利于分子轨道的离域化，而且具有动力学快、循环稳定性好、易于大规模生产、成本低等优点。在这篇迷你综述中，我们首先概述了HAT的设计策略，包括小分子和聚合物，然后是最近HAT oem的工作原理和机制。随后，我们提出了一个全面的部分，重点是基本的电化学性能（输出电压，容量，循环稳定性和倍率性能）和优化HAT oem，在不同的电池中使用不同的离子载流子。最后，讨论了HAT oem面临的关键挑战和前景，旨在开发实用的有机和水电解质电池，朝着高能量密度、高稳定性、快速动力学和低成本的方向发展。这篇迷你评论提供了对高性能下一代可充电电池的杂芳香族HAT oem的发展的见解。
π-Conjugated organic electrode materials (OEMs) attract numerous attentions for rechargeable batteries, owing to their unprecedentedly high theoretical capacity, flexible structure designability, environmental friendliness and elemental abundance. The essential rigid coplanar hexaazatriphenylene (HAT) building blocks with high density Cdouble bondN functional groups, not only facilitate the delocalization of molecular orbitals for energy band engineering, but also impose fast kinetics, good cycling stability, as well as facile and large-scale production with low cost. In this Minireview, we start with a general overview of the design strategies of HATs, involving both small molecules and polymers, followed by the working principles and mechanisms of recent HAT OEMs. Subsequently, we present a comprehensive section focusing the fundamental electrochemical properties (output voltage, capacity, cycling stability, and rate performance) and optimization of HAT OEMs, with various ionic charge carriers in different batteries. Finally, the critical challenges and perspectives of HAT OEMs are discussed, aiming to develop practical batteries in both organic and aqueous electrolytes, towards high energy density, high stability, fast kinetics, and low cost. This Minireview provides insights into the development of heteroaromatic HAT OEMs with high performance for next-generation rechargeable batteries.
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