Forward polarization enhanced all-polymer based sustainable triboelectric nanogenerator from oriented electrospinning PVDF/cellulose nanofibers for energy harvesting

Abstract

A high performance all-polymer based sustainable triboelectric nanogenerator with recyclable properties enhanced by forward polarization for energy harvesting.

Rational Design of Advanced Triboelectric Materials for Energy Harvesting and Emerging Applications

“…Second, compared to other methods, electrospinning can control the dipole moment of some kinds of polymers simply by aligning polymers at the molecular level, which increases the polarity of the polymer to attract more electrons to yield higher electric outputs. [ 56 ] Third, electrospun triboelectric materials are conducive to lower dielectric constants and lower thicknesses due to their inherent porous structure, and these facilitate improved electrical output performance. [ 57–59 ] Lastly, electrospun material could be prepared with an internal porous structure, charges may be induced on the surface and or inside of the pores.…”

A Self-Powered Piezoelectric Nanofibrous Membrane as Wearable Tactile Sensor for Human Body Motion Monitoring and Recognition

“…It is worth noting that the structure and properties of PVDF can be effectively manipulated through nanoscale fabrication, where the electrospinning process stands out as a one-step, low cost, scalable and versatile process [28,29]. Despite the crucial roles electrospun nanofibers (ESNFs) have played in fields such as filtration and biomedical scaffolds [30][31][32][33], and been employed as substrates in a wide range of applications due to their unique porous structure, air permeability, and large surface to volume ratio [34,35], the ease of feature modification and attributes design greatly enhances the practicality of employing ESNF membranes as active functional layers for tactile sensing. For instance, incorporating additives such as ZnO nanorods into PVDF ESNFs can boost the power output [36]; introducing unique hierarchical structures such as core-sheath microfibers can bolster their flexibility to withstand intense external deformation [37]; utilizing post-treatment methods including crystallization and poling of fiber membranes can augment their piezoelectric properties [38].…”

Fabrication of triboelectric nanogenerators with multiple strain mechanisms for high-accuracy material and gesture recognition

“…More importantly, the number of studied subject types was not higher than 5 in most previous studies, as the discriminability of the TENG signal is susceptible to the number, which would reduce the accuracy with increasing the number. 2,7,[31][32][33][34][35][36][37][38] To address this concern, two strategies have received the most consideration for improving the recognition accuracy of TENG devices. One of these strategies involves introducing a new technology to regulate and assist the triboelectrication effect.…”

“…More importantly, the number of studied subject types was not higher than 5 in most previous studies, as the discriminability of the TENG signal is susceptible to the number, which would reduce the accuracy with increasing the number. 2,7,31–38…”