Organic composite electrode materials based on an aromatic polyimide (PI) and electron conductive polythiophene (PT) have been prepared by a facile in situ chemical oxidation polymerization method. The common aromatic structure possessed by both electroactive PI and electron conductive PT allows intimate contacts, resulting in conductive polymeric composites with highly reversible redox reactions and good structural stability. It has been demonstrated that the PI composite material with 30 wt% PT coating (PI30PT) has the optimal combination of good electronic conductivity and fast lithium reaction kinetics. The synergistic effect between PI and PT enables a high reversible capacity of 216.8 mA h g⁻¹ at a current rate of C/10, as well as a high-rate cycling stability, that is, a high capacity of 89.6 mA h g⁻¹ at a high current rate of 20C with a capacity retention of 94% after 1000 cycles. The elaborate combination of the high electronic conductivity of the PT coating and the fabulous redox reaction reversibility of the PI matrix offers an economic way to prepare high performance lithium ion batteries for sustainable energy storage applications.

中文翻译：

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聚噻吩涂层的芳香族聚酰亚胺可实现超快速，可持续的锂离子电池

已经通过一种简便的原位化学氧化聚合方法制备了基于芳香族聚酰亚胺（PI）和电子导电性聚噻吩（PT）的有机复合电极材料。电活性PI和电子导电PT均具有共同的芳族结构，可以紧密接触，从而使导电聚合物复合材料具有高度可逆的氧化还原反应和良好的结构稳定性。已经证明，具有30 wt％PT涂层的PI复合材料（PI30PT）具有良好的电导率和快速的锂反应动力学的最佳组合。PI和PT之间的协同效应可实现216.8 mA hg ^-1的高可逆容量在C / 10的电流速率下具有高的循环稳定性，即在20C的高电流速率下具有89.6 mA hg ^-1的高容量，在1000次循环后的容量保持率为94％。PT涂层的高电子电导率与PI基体出色的氧化还原反应可逆性的精心组合提供了一种经济的方式来制备用于可持续能源存储应用的高性能锂离子电池。