In this paper, we report on a new dielectric, a C₆₀-containing block polyimide (PI-b-C₆₀). This was realized by introducing C₆₀ as pendent groups into a polymer backbone. When this dielectric was used in a non-contact mode triboelectric nanogenerator (TENG), it achieved high output power and reliable operation. Compared with perfluoroalkoxy alkane film-based TENGs, the TENG based on PI-b-C₆₀ generated 4.3 times higher output power and a superior charge density of over 300 μC m⁻² with a 3 times slower charge decay rate. These results are most likely due to the excellent charge-retention characteristics induced by the most negative electrostatic potential of C₆₀ within the backbone, and these characteristics were confirmed by surface potential measurements. Furthermore, in the course of our work, two non-contact mode applications, a keyless electronic door lock system and a speed sensor with a tone wheel for a car, were developed. Without an ion injection process being needed, very sensitive and reliable operations of the speed sensor were successfully demonstrated, even under very humid conditions (∼99% RH).

中文翻译：

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非接触式摩擦电纳米发电机中可持续的高电荷C60官能化聚酰亚胺

在本文中，我们报告了一种新的电介质，一种含C ₆₀的嵌段聚酰亚胺（PI- b -C ₆₀）。这是通过将C ₆₀作为侧基引入聚合物主链来实现的。当将此电介质用于非接触式摩擦电纳米发电机（TENG）时，它实现了高输出功率和可靠的运行。与基于全氟烷氧基烷烃薄膜的TENG相比，基于PI- b -C ₆₀的TENG产生的输出功率高4.3倍，并且电荷密度超过300μCm ^-2。电荷衰减速率慢3倍。这些结果很可能归因于骨架中C ₆₀的最大负静电势所诱导的优异的电荷保持特性，并且这些特性已通过表面电势测量得到证实。此外，在我们的工作过程中，开发了两种非接触式应用程序，即无钥匙电子门锁系统和带有汽车音轮的速度传感器。无需离子注入过程，即使在非常潮湿的条件下（〜99％RH），也已成功证明了速度传感器非常灵敏和可靠的操作。