The capacitive energy storage performance of polymer dielectrics degrades rapidly at elevated temperatures and electric fields owing to the exponential growth of conduction loss. The formation of conduction loss is mainly attributed to the transport of charge carriers in polymer dielectrics and at the dielectric/electrode interface, which is dominated by bulk-limited and electrode-limited conduction mechanisms, respectively. Establishing a strong electrostatic interaction, both attractive and repulsive, between guest charge carriers and host polymer dielectrics has been extensively employed to inhibit charge transport. The construction of electrostatic attraction interaction can be implemented by introducing deep traps in polymer dielectrics to capture the charge carriers and restrain their transport. In contrast, the electrostatic repulsion is based on the scattering effect of an electron-rich surface, which can effectively reduce the mobility of energetic electrons and change the path of charge transport. Unfortunately, a systematic summary of using electrostatic interaction to regulate charge transport is still lacking. In this review, we critically analyze the electrical conduction mechanisms in polymer dielectrics and summarize recent advances in the regulation of high-temperature capacitive energy storage performance by employing electrostatic attraction and repulsion, including the advantages and limitations. This review is concluded by highlighting the advantages and limitations of such approach, as well as challenges and future opportunities.

中文翻译：

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静电相互作用连接了聚合物电介质的电荷传输动力学和高温电容储能性能


由于传导损耗呈指数增长，聚合物电介质的电容储能性能在高温和电场下迅速下降。传导损耗的形成主要归因于聚合物电介质中和电介质/电极界面处的电荷载流子的传输，这分别由体限制和电极限制传导机制主导。在客体电荷载流子和主体聚合物电介质之间建立强静电相互作用（吸引和排斥）已被广泛用于抑制电荷传输。静电吸引相互作用的构建可以通过在聚合物电介质中引入深陷阱来捕获电荷载流子并限制其传输来实现。相比之下，静电斥力基于富电子表面的散射效应，可以有效降低高能电子的迁移率，改变电荷传输的路径。不幸的是，仍然缺乏利用静电相互作用调节电荷传输的系统总结。在这篇综述中，我们批判性地分析了聚合物电介质的导电机制，并总结了利用静电吸引和排斥来调节高温电容储能性能的最新进展，包括优点和局限性。本次审查的结论是强调了这种方法的优点和局限性，以及挑战和未来的机遇。