Enhancing the output performance of hybrid nanogenerators based on Al-doped BaTiO₃ composite films: a self-powered utility system for portable electronics

Abstract

A composite film consisting of Al-doped BaTiO3 particles with high ferroelectricity is used to enhance the output performance of nanogenerators.

Humidity Sustained Wearable Pouch‐Type Triboelectric Nanogenerator for Harvesting Mechanical Energy from Human Activities

“…On the other hand, the output performance of TENG devices is also enhanced by modifying the relative permittivity of the dielectric/triboelectric materials . For example, the embedded materials into polymer matrices such as silver nanowires, carbon nanotubes, some dielectric materials, etc. are expected to boost surface electrification and relative permittivity of dielectric (i.e., frictional) materials, which leads to the enhanced output performance of TENGs.…”

High-Performance Triboelectric Devices via Dielectric Polarization: A Review

“…Therefore, interfacial polarization is observable in all multicomponent dielectric systems, including semi-crystalline polymers, polymer blends, or nanocomposites with high- k - or conducting-nanofillers. Recently, polymer nanocomposites with high- k nanoparticles, which improve the net dielectric constant, thereby leading to the enhancement of the surface charge density, and thus the triboelectric performance, have been utilized in triboelectric devices [ 23 , 44 , 45 ]. In the following sections, we introduce some examples to demonstrate the enhancement of triboelectric output performance through an increase in the dielectric constant.…”

“…In addition to dielectric nanoparticles, different kinds of high-permittivity materials, such as Al-doped BaTiO 3 and CaCu 3 Ti 4 O 12 , are applied in the triboelectric layers, leading to an improved dielectric constant and the resultant triboelectric performance (Fig. 2 b) [ 44 , 45 ]. On the other hand, the addition of conductive materials enables the formation of micro-capacitor structures in the polymer matrix, which can induce space charge accumulation at the interface between the polymer matrix and additives.…”

Exploring the theoretical and experimental optimization of high-performance triboelectric nanogenerators using microarchitectured silk cocoon films

“…Figure 7a depicts the equivalent circuit model of the AT-MASF-TENG to charge the capacitor via the rectifier, followed by powering the portable electronic equipment. [70,71] Figure 7b Whereas, both the timer and wristwatch connected to the capacitor were turned on for ~40-60 s, which is also noted as the discharge lifetime of the capacitor. Besides, several green LEDs connected in series, spelled as "MASF TENG" directly turned on by the operating AT-MASF-TENG without any additional electrical components (e.g., rectifiers and capacitors), as shown in Figure 7d and Video S2.…”