Although it is known that triboelectric nanogenerators (TENGs) based on ferroelectric polymer films show better performance, the origin of this enhancement remains poorly understood. To date, it has been accepted that enhancement is observed due to shift of the “effective work function” of the ferroelectric polymer insulator, which in turn enhances electron transfer between the TENG electrodes. The present study reveals that this view is incorrect and, in reality, the enhancement is observed due to induction driven by piezoelectric charges. Furthermore a novel piezoelectric-electrostatic generator (PEEG) has been constructed from inversely polarised polyvinylidene films, which exhibits higher performance than TENGs for mechanical energy conversion to electricity.

中文翻译：

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极性相反的铁电聚合物接触电极，用于由相同材料制成的类似摩擦电的发电机†

尽管已知基于铁电聚合物薄膜的摩擦电纳米发电机（TENG）表现出更好的性能，但这种增强的起源仍然知之甚少。迄今为止，已经公认由于铁电聚合物绝缘体的“有效功函数”的偏移而观察到增强，这反过来又增强了TENG电极之间的电子转移。本研究表明，这种观点是不正确的，实际上，由于压电电荷驱动的感应，观察到了这种增强。此外，已经用反极化的聚偏二乙烯膜构造了新型的压电静电发生器（PEEG），该膜在将机械能转换为电能方面表现出比TENG更高的性能。