High-Performance Hybridized Composited-Based Piezoelectric and Triboelectric Nanogenerators Based on BaTiO₃/PDMS Composite Film Modified with Ti_0.8O₂ Nanosheets and Silver Nanopowders Cofillers

Abstract

In order to commercialize the rapidly developing technology of energy harvesters, the following devices need to be developed further for enhancing output performance, flexibility, scalability, facile fabrication, and cheaper price. The composite-based triboelectric nanogenerator (CTENG), which contains the above properties, is a promising technology that has attracted special interest for a decade. Focus has been placed on the hybrid concept between the composite-based piezoelectric nanogenerator (CPENG) and CTENG in order to enhance CTENG efficiency. This study presented a high-performance hybridized CPENG and CTENG device, which operated from the composite film of Ti0.8O2 nanosheets (Ti NSs)/silver nanoparticles (Ag NPs) co-doped BaTiO3 nanopowders (BT NPOs) inside the polydimethyl­siloxane (PDMS) host. The 0.3 vol % of Ti NSs and 1.5 vol % of Ag NPs exhibited the optimum harvesting performance in all compositions, with an output voltage and current density reaching approximately 150 V and 0.32 μA/cm2, respectively. Their harvesting performance was approximately 60 and 32 times higher than that of the CPENG constructed from pure PDMS. In addition, practical demonstration of the proposed device was investigated. The hybridized CPENG and CTENG device could operate in a long-term cyclic operation, charge the capacitor for storing energy, and also drive LEDs to brighten. This work suggested facile device fabrication and made a guideline to develop high-performance nanogenerators, which is crucial for device development and practical usage in the future.

Impact-Driven Energy Harvesting: Piezoelectric Versus Triboelectric Energy Harvesters

“…Therefore, a device properly installed in a controlled environment could be highly efficient [ 29 ]. Moreover, enlarging the size of a TEH and parallelly connecting many of them in the same device has the potential to increase the electrical output [ 30 ]. In addition, hybridizing TEH with another energy harvesting device that operates by a different harvesting mechanism has been investigated and found to increase energy production efficiency [ 31 , 32 , 33 ].…”

Recent developments of hybrid piezo–triboelectric nanogenerators for flexible sensors and energy harvesters

“…These conductive fillers facilitate a more efficient transfer of internal piezoelectric charges to the surface, generating more induced charges on the electrode, increasing the output signal. A typical example is shown in Sriphan et al's work,52 where the synergistic effect of adding additional piezoelectric and conductive materials on PTENG output was studied. In their PDMS composite based PTENG, BTO nanoparticles are the primary piezoelectric ceramic material, Ag nanoparticles improve the conductivity, and Ti 0.8 O 2 nanosheets were used as the secondary piezoelectric material.The electrical testing results confirmed that a small amount of additional piezoelectric ceramics and conductive materials produced more electric dipoles in the composite film, leading to a higher electric output.…”

Titania Nanosheet Generates Peroxynitrite-Dependent S-Nitrosylation and Enhances p53 Function in Lung Cancer Cells

“…Briefly, the potassium zinc titanate K 0 .8 Zn 0 .4 Ti 1 .6 O 4 was first synthesized by heating the stoichiometric mixture of K 2 CO 3 , ZnO, and TiO 2 at 900 °C for 20 h. Then, the solid was soaked in 1 M HCl overnight (solid-to-solution ratio of 1 g to 100 mL) for a total of 3 cycles, with fresh acid replaced in between. The product is H 1 .6 Ti 1 .6 O 4 ·0.8H 2 O, where 0.8H + is first exchanged for 0.8K + , another 0.8H + for the leached [ 21 ] 0.4Zn 2 + , with water inclusion. Finally, 0.4 of the protonic form was mechanically shaken at 180 rpm for 14 days with diluted tetrabutylammonium hydroxide (TBAOH) solution (1 M, Sigma-Aldrich, St. Louis, MO, USA).…”