Piezoelectric and Triboelectric Dual Effects in Mechanical-Energy Harvesting Using BaTiO₃/Polydimethylsiloxane Composite Film

Abstract

Piezoelectric and triboelectric nanogenerators have been developed as rising energy-harvesting devices in the past few years to effectively convert mechanical energy into electricity. Here, a novel hybrid piezo/triboelectric nanogenerator based on BaTiO NP/PDMS composite film was developed in a simple and low-cost way. The effects of the BTO content and polarization degree on the output performance were systematically studied. The device with 20 wt % BTO in PDMS and a 100-μm-thick film showed the highest output power. We also designed three measurement modes to record hybrid, triboelectric, and piezoelectric outputs separately with a simple structure that has only two electrodes. The hybrid output performance is higher than the tribo- and piezoelectric performances. This work will provide not only a new way to enhance the output power of nanogenerators, but also new opportunities for developing built-in power sources in self-powered electronics.

Fiber/Fabric‐Based Piezoelectric and Triboelectric Nanogenerators for Flexible/Stretchable and Wearable Electronics and Artificial Intelligence

“…It is found that the accordant direction of piezoelectric polarized charges and triboelectric induced charges would enhance power outputs, while their opposite direction would tremendously reduce electricity generation. According to the number of electrodes and combination ways of PENG and TENG, there are three different coupling modes of PTHNGs ( Figure a), i.e., mode I in which PENG and TENG share a pair of electrodes, mode II in which PENG and TENG share one common electrode, and mode III in which PENG and TENG work independently . Although each mode has its own characteristics, their electrical generation processes can be roughly divided into three steps, i.e., 1) TENG contacted and PENG pressed, 2) TENG contacted and PENG released, or 3) TENG separated and PENG released, according to the contact or separation state of triboelectric material and the compress or release state of piezoelectric material.…”

Energy Harvesting Research: The Road from Single Source to Multisource

“…Different kinetic energy conversion methods in combination are able to compensate each other, thus boosting the output power. Various types of kinetic (including fluidic) hybridization involving two energy conversion effects have been developed, including piezoelectric–electromagnetic, electrostrictive–electrets, piezoelectric–triboelectric, electromagnetic–triboelectric, piezoelectric–electrostatic, triboelectric–electrostatic, and piezoelectric–electrostrictive . Hybridization involving three kinetic energy conversion effects, piezoelectric–electromagnetic–triboelectric, has also been reported.…”

A Review on Piezoelectric, Magnetostrictive, and Magnetoelectric Materials and Device Technologies for Energy Harvesting Applications

“…[114] Under bending excitation at approximately 45 Hz, an output peak-to-peak voltage of approximately 0.45 V under a load resistance of 1 MΩ was obtained. [116] The effects of the contents of multi-walled carbon nanotubes (MWCNT) (0.0-5.0 wt%) and BaTiO 3 nanofibers (10-50 wt%) on the electrical, dielectric, and piezoelectric properties of PDMS-based nanogenerators were systematically investigated. [115] A BaTiO 3 /PDMS composite film with a 20 wt% mass ratio of BaTiO 3 nanoparticles exhibited the highest performance (output voltage of approximately 14 V).…”

“…[115] A BaTiO 3 /PDMS composite film with a 20 wt% mass ratio of BaTiO 3 nanoparticles exhibited the highest performance (output voltage of approximately 14 V). [116] The effects of the contents of multi-walled carbon nanotubes (MWCNT) (0.0-5.0 wt%) and BaTiO 3 nanofibers (10-50 wt%) on the electrical, dielectric, and piezoelectric properties of PDMS-based nanogenerators were systematically investigated. [117] A nanocomposite with 2.0 wt% MWCNTand 40 wt% BaTiO 3 nanofiber generated the highest output voltage of approximately 3.73 V, a current of approximately 1.37 mA, and a power of approximately 330 μW, which was sufficient to light up commercial LEDs and charge a capacitor after rectification.…”