Xue Jiao Zhao,Zhi Hao Zhao,Zhong Lin Wang,Guang Zhu,Jie Wang
Triboelectric nanogenerators (TENGs), among the most simple and efficient means to harvest mechanical energy, have great potential in renewable energy utilization. While the output performance of TENGs is still not high enough, which limits its practical application. Here, a poly(vinylidene fluoride) (PVDF)/fluorinated ethylene propylene nanoparticles (FEP NPs) porous nanofiber (PFPN) membrane with waterproof, breathable, surface superhydrophobic and high tribo-negative properties is proposed for achieving high-performance of TENGs. The PFPN-based solid–solid contact PFPN-TENG achieved an optimal electric output with a net tribo-charge density of 294 µC m −2 , which is 42.2% more than that of polytetrafluoroethylene (PTFE) film. The PFNP membrane can maintain the best performance with almost no attenuation after 142680 working cycles. Based on its excellent triboelectric characteristics, the PFPN membrane shows its excellent performance for self-powered body motion sensing and mechanical energy harvesting. A flexible solid–liquid contact PFPN-TENG can achieve high electrical output with an average volume power density of ≈544.1 W m −3 by harvesting water wave energy. Such excellent performance of the PFPN membrane makes it a potential candidate to promote the power density of TENGs in harvesting blue water wave energy.
Miniaturized portable triboelectric nanogenerators (TENGs) have emerged as an ideal power supply for wearable electronic devices because they can convert human biomechanical energy to electrical energy and can be easily integrated with wearable electronic devices. In this study, an electret-doped polarized nanofiber TENG with a micro-waveform structure (denoted as MW-EPTENG) was synthesized using electrospinning. The maximum output voltage and current generated by MW-EPTENG were 102 V and 1.02 μA, respectively, which were significantly higher than those by an electret-doped polarized nanofiber TENG with a planar structure. Moreover, MW-EPTENG maintained a stable output current and voltage after 6 h of continuous pressing. Importantly, MW-EPTENG simultaneously illuminated 21 5 mm diameter light-emitting diode bulbs, exhibiting its excellent application potential for the actual power supply and the conversion of biomechanical energy and external mechanical force to electrical energy. The excellent and enhanced electrical output performance of MW-EPTENG that contributed by micro-waveform-based structural design is conducive to the miniaturization of TENGs.
危险品化学品经营许可证（带存储）