As a promising sustainable power source for intelligent electronics, triboelectric nanogenerator (TENG) has attracted remarkable attention and various strategies have been sought to improve its output performance. However, most of these approaches for triboelectric materials optimization only focus on either chemical composition modulation or surface microstructure fabrication. In this work, both aspects are considered and an effective strategy is proposed to construct high performance TENGs based on polyvinylidene fluoride (PVDF) via graphene nanosheets incorporation in conjunction with electrospinning technology. Hence, the PVDF/G NF-PA6 TENG demonstrated superior triboelectric performance with an output voltage of ~1511 V, a short-circuit current density of 189 mA m^-2, and a maximum power density of ~130.2 W m^-2, nearly eight times higher than that of the PVDF-PA6 TENG. Additionally, under impedance matching condition, the PVDF/G-PA6 TENG can harvest ~74.13 μJ energy per cycle, with a time-averaged output power density of 926.65 mW m^-2. Detail investigations revealed that both composition modulation with graphene and nanofiber structure fabricated through electrospinning contribute to the triboelectric performance enhancement of PVDF/G NF films. This work provides an effective strategy of simultaneously optimizing the chemical composition and surface microstructure of triboelectric materials to significantly improve the output performance of TENGs, and to further promote the widespread application of TENGs.

作为智能电子的有前途的可持续电源，摩擦电纳米发电机（TENG）引起了人们的极大关注，并且已寻求各种策略来提高其输出性能。但是，这些用于摩擦电材料优化的方法大多数都只关注化学成分调制或表面微结构制造。在这项工作中，考虑了这两个方面，并提出了一种有效的策略，通过结合石墨烯纳米片结合电纺丝技术构建基于聚偏二氟乙烯（PVDF）的高性能TENG。因此，PVDF / G NF-PA6 TENG具有出众的摩擦电性能，输出电压约为1511 V，短路电流密度为189 mA m ^-2最大功率密度为〜130.2 W m ^-2，几乎是PVDF-PA6 TENG的八倍。此外，在阻抗匹配条件下，PVDF / G-PA6 TENG每个周期可以收集约74.13μJ能量，时间平均输出功率密度为926.65 mW m ^-2。详细研究表明，石墨烯的成分调制和通过静电纺丝制备的纳米纤维结构都有助于提高PVDF / G NF薄膜的摩擦电性能。这项工作提供了一种有效的策略，可以同时优化摩擦电材料的化学成分和表面微观结构，以显着提高TENG的输出性能，并进一步促进TENG的广泛应用。