Hierarchically Surface‐Textured Ultrastable Hybrid Film for Large‐Scale Triboelectric Nanogenerators

Abstract

The supply of electrical power is indispensable in the internet of things (IoT) area. Triboelectric nanogenerators (TENGs) has been largely used as a power supply due to simple device structure and various possibilities of material selection. Although various surface modifications of TENG are utilized for improving the output performance of TENG, these methods have significant drawbacks of high-cost fabrication process, limited device size, and wearing out. Here, a mechanically robust TENG using a newly developed surface-textured glass fabric reinforced siloxane hybrid film (SGH film) is presented. The large-scale SGH film is cost-effectively fabricated via a simple roll-to-plate and UV curing process. The film is repeatedly duplicated over 100 times using one pre-treated substrate mold. SGH film exhibits superior thermal and mechanical stability, compared to other polymer films. Finally, surface textured TENG (THTENG) is achieved using extremely stable SGH film, resulting in enhanced output power compared to flat TENG and high durability during the 100 000 cycles of TENG operation.

Recent Progress in Self-Powered Sensors Based on Triboelectric Nanogenerators

“…Similarly, Bae et al [24] also formed micro-domes and nano-pores on the TENG friction layer to realize nano/microstructure on the friction electric surface, increasing its total surface area by 210% and improving the TENG output, as presented in Figure 3d. Figure 3e shows that Wang et al [25] prepared a kind of TENG for electret film. Due to the charge injection principle of electret film, the surface charge density σ of the friction layer greatly increased, and the short-circuit current and open-circuit voltage could achieve up to about seven times that of traditional TENG.…”

Triboelectric nanogenerator based on degradable materials

“…The massive battery usage led to serious environmental concerns 1 . Triboelectric nanogenerator (TENG), as a neotype green energy technology, can get the energy from the surrounding environment and organism 2‐6 . It was reported by Pro.…”

Electron-Ion Coupling Mechanism to Construct Stable Output Performance Nanogenerator

“…Based on different mechanisms, including the piezoelectric effect, electromagnetic effect, and electrostatic effect, ambient mechanical energy can be converted to electrical power using the corresponding mechanical energy harvesters, i.e., piezoelectric nanogenerators [14][15][16][17], electromagnetic generators [18,19], and elec-trostatic nanogenerators [20]. In 2012, a novel power collecting device named as the triboelectric nanogenerator (TENG) was first introduced [21], proving to be a configuration-simple [22], cost-effective [23], and high energy conversion efficiency [24][25][26] for mechanical energy harvesting [27][28][29]. According to different types of working mechanisms, TENGs can be categorized into four modes: contact-separation [30][31][32], single-electrode [33,34], freestanding [35,36], and relative sliding [37][38][39].…”