Seed Power: Natural Seed and Electrospun Poly(vinyl difluoride) (PVDF) Nanofiber Based Triboelectric Nanogenerators with High Output Power Density

Abstract

A triboelectric nanogenerator (TENG) based on natural seeds and electrospun poly­(vinyl difluoride) (PVDF) fibers is reported. The nanofibers are specifically used to enhance the triboelectric effects. A mustard (flax) seed based TENG renders an impressively high electrical output with an average open circuit voltage of 84 V (126 V) and maximum power density 334 mW m–2 (324 mW m–2) under an impact force of 40 N at 25 Hz. Basil seeds are relatively weaker in power delivery. By comparing the seed crust properties and TENG performances, we analyze the powering capability in terms of the cellulose content in the crust, dielectric constant, and surface morphological features.

Scavenging Mechanical Energy from Human Motions Using Novel‐Biomaterial‐Based Triboelectric Nanogenerator

“…The peak around 20 represents the presence of amines, carboxyl groups in these waste materials. From results it can be concluded that all these biomaterials consist of various functional groups which are electropositive in nature, [35,38] thus making them suitable as active material for TENG fabrication which utilizes piezoelectric and triboelectric effect in coupled form. In this research work, to quantify output from aforementioned material-based TENG, a triboelectric series of materials is prepared based on their capability of losing and gaining electrons during the process while tapping manually.…”

“…It was observed that higher carbohydrate content resulted in more charge production but at the same time surface roughness also played a vital role. [35] Jie et al utilized various types of green leaves such as lotus leaf, Populus, hosta leaf, and L. Chinese in combination with poly(methyl methacrylate) (PMMA) and produced a maximum output power %45 mW m À2 . [36] Some other products of plants such as sugar were also used by some researchers in TENG fabrication.…”

Effect of dehydrofluorination reaction on structure and properties of PVDF electrospun fibers

“…Piezoelectric sensors have attracted widespread attention in recent years and have been widely applied in energy harvesting, [1][2][3] human health monitoring, 4 physiological activities, 5 and medical diagnosis. 6,7 The structure of a piezoelectric sensor is mainly composed of a exible substrate, active materials, and conductive electrodes, among which active piezoelectric materials are the most important part with excellent mechanical exibility, piezoelectricity, conductivity, sensitivity, and high energy storage.…”

Energy Harvesters for Wearable Electronics and Biomedical Devices

“…Additionally, fibers and fabrics such as thin film of CNT/cotton fabric, [ 170 ] Ni‐fabrics/polyester/parylene fabrics, [ 171 ] and Ni‐coated polyester/silicon rubber [ 172 ] are competent for wearable applications. Moreover, for biodegradable applications, natural leaf, [ 173 ] silk nanofiber, [ 174 ] bacterial nanocellulose, [ 175 ] chitosan biopolymers, [ 176 ] cellulose, [ 177 ] silk fibroin, [ 178 ] egg white, [ 179 ] natural seeds, [ 180 ] milk, [ 181 ] and paper [ 182 ] are widely used.…”