Aromatic polyamides, aramids, have recently drawn research attention for energy storage applications due to their outstanding physical and chemical properties. In this study, we report three new aramid-containing dicyanotriphenylamine skeletons in the polymer backbone as anode materials for organic lithium-ion batteries. The electrochemical test revealed that the aramid anodes exhibited a high specific capacity up to 1600 mA h g⁻¹ and superior rate performance (535 mA h g⁻¹ at 10 A g⁻¹), with excellent coulombic efficiency (∼99%) and capacity retention after 1000 cycles up to 10 A g⁻¹. The overall performance shown in this work is among the best compared with the reported polymer-based lithium-ion batteries. Mechanistic studies revealed that the outstanding electrochemical performance of aramids as battery anode materials are highly related to the physical and chemical properties of the aramids, which tuned their activation energy and charge-stored behavior as well as cycling stability. The long cycling performance under high current density and binder-free capability further suggest that aramids are promising candidates for next-generation organic lithium-ion batteries.

中文翻译：

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用于高倍率和长循环寿命有机锂离子电池的高性能芳纶电极

芳族聚酰胺，芳纶，由于其出色的物理和化学性质，最近引起了储能应用的研究关注。在这项研究中，我们报告了聚合物主链中三种新的含芳族聚酰胺的二氰基三苯胺骨架作为有机锂离子电池的阳极材料。电化学测试表明，芳纶负极表现出高达 1600 mA hg ^{-1 的}高比容量和优异的倍率性能（10 A g ^{-1时为 535 mA hg -1}），具有出色的库仑效率（~99%）和容量保持率1000 次循环后达到 10 A g ⁻¹. 与报道的基于聚合物的锂离子电池相比，这项工作中显示的整体性能是最好的。机理研究表明，芳族聚酰胺作为电池负极材料的出色电化学性能与芳族聚酰胺的物理和化学性质高度相关，从而调节了它们的活化能和电荷存储行为以及循环稳定性。高电流密度下的长循环性能和无粘合剂能力进一步表明芳族聚酰胺是下一代有机锂离子电池的有希望的候选者。