Flexible and durable wood-based triboelectric nanogenerators for self-powered sensing in athletic big data analytics

Abstract

In the new era of internet of things, big data collection and analysis based on widely distributed intelligent sensing technology is particularly important. Here, we report a flexible and durable wood-based triboelectric nanogenerator for self-powered sensing in athletic big data analytics. Based on a simple and effective strategy, natural wood can be converted into a high-performance triboelectric material with excellent mechanical properties, such as 7.5-fold enhancement in strength, superior flexibility, wear resistance and processability. The electrical output performance is also enhanced by more than 70% compared with natural wood. A self-powered falling point distribution statistical system and an edge ball judgement system are further developed to provide training guidance and real-time competition assistance for both athletes and referees. This work can not only expand the application area of the self-powered system to smart sport monitoring and assisting, but also promote the development of big data analytics in intelligent sports industry.

Cellulose‐Based Fully Green Triboelectric Nanogenerators with Output Power Density of 300 W m−2

“…However, a recent study [ 19 ] has indicated that cellulose acetate has a higher triboelectric effect than polytetrafluoroethylene (PTFE). This finding implies the great potential of cellulose‐based materials [ 20 ] for use in environmentally friendly TENGs [ 21 ] with performances close to those using fluoropolymers.…”

Bio‐Derived Natural Materials Based Triboelectric Devices for Self‐Powered Ubiquitous Wearable and Implantable Intelligent Devices

“…[25,27,45,46] The triboelectrification phenomena can occur in almost all types of materials, e.g., polymers, ceramics, and metals, and at different interfaces, e.g., solid-solid, solidliquid, and liquid-liquid. [47][48][49][50][51] The structure of TENG consists of conducting electrodes, [34,[52][53][54] (e.g., metals, conductive gel etc.) and two triboelectric layers that have different electronegativities.…”

“…In order to efficiently collect the wide range of various environmental mechanical energies, such as walking, tapping, sliding etc., four modes of TENGs have been proposed and demonstrated, including lateral sliding mode, [56][57][58][59] vertical contact-separation mode, [45,52,60,61] freestanding mode, [62][63][64] and single-electrode mode. [24,48,50,65,66] Compared with traditional mechanical energy harvesting devices based on mechanisms such as piezoelectric [19,67,68] and electromagnetic effects, [69][70][71] TENG has its advantages regarding the versatile material selection, lightweight, flexibility, low cost, high conversion efficiency, etc. [25,33,34] The electrical outputs can be used to power small electronics (such as an electronic watch, LEDs, calculator, small sensors) [72][73][74][75][76][77] or as the sensing signal in self-powered sensor systems.…”

“…have also been investigated for triboelectric devices in mechanical energy harvesting and self-powered sensors. [12,41,50,[232][233][234][235][236][237] For instance, Feng et al [233] reported a leave-based TENG for wind energy harvesting. Singh et al [234] showed that natural seeds (e.g., mustard, basil, flax seeds) could be used as the triboelectric materials due to their rough surface morphologies and rich functional groups (e.g., amine, hydroxyl, thiol, and isothiocyanate).…”

Hybrid All‐in‐One Power Source Based on High‐Performance Spherical Triboelectric Nanogenerators for Harvesting Environmental Energy

“…[ 8,14–21 ] Thus, the TENG technology can provide a possible solution for maintenance‐free power supply in IoTs, which can further combine with energy storage devices, such as capacitors, to achieve self‐powered systems. [ 22–27 ] However, although there are lots of attempts in this field, the proposed devices are usually dependent on single energy source, which cannot ensure reliable power supply. Some recently reported hybrid devices have also been attempted to harvest multiple forms of environmental energy, but they are not suitable for working in all‐weather harsh environment, and their output power still needs to be further improved for practical applications.…”