Lead-Free Bi3.15Nd0.85Ti3O12 Nanoplates Filler-Elastomeric Polymer Composite Films for Flexible Piezoelectric Energy Harvesting

Abstract

Nowadays, wearable and flexible nanogenerators are of great importance for portable personal electronics. A flexible piezoelectric energy harvester (f-PEH) based on Bi3.15Nd0.85Ti3O12 single crystalline nanoplates (BNdT NPs) and polydimethylsiloxane (PDMS) elastomeric polymer was fabricated, and high piezoelectric energy harvesting performance was achieved. The piezoelectric output performance is highly dependent on the mass ratio of the BNdT NPs in the PDMS matrix. The as-prepared f-PEH with 12.5 wt% BNdT NPs presents the highest output voltage of 10 V, a peak-peak short-circuit current of 1 μA, and a power of 1.92 μW under tapping mode of 6.5 N at 2.7 Hz, which can light up four commercial light emitting diodes without the energy storage process. The f-PEHs can be used to harvest daily life energy and generate a voltage of 2–6 V in harvesting the mechanical energy of mouse clicking or foot stepping. These results demonstrate the potential application of the lead-free BNdT NPs based f-PEHs in powering wearable electronics

A flexible self-poled piezocomposite nanogenerator based on H2(Zr0.1Ti0.9)3O7 nanowires and polylactic acid biopolymer

“…Interestingly, the obtained electrical outputs are superior to some previous PDMS or PVDF composite-based PNG without any prior electrical poling process. 66–71 As shown before, this can be ascribed to the natural piezoelectricity developed in PLA after mechanical stress application and the surface-charge induced polarization. 21,72,73…”

“…Interestingly, the obtained electrical outputs are superior to some previous PDMS or PVDF composite-based PNG without any prior electrical poling process. [66][67][68][69][70][71] As shown before, this can be ascribed to the natural piezoelectricity developed in PLA aer mechanical stress application and the surface-charge induced polarization. 21,72,73 To verify the purity of the piezoelectric effect in the nw-PNG device under pressing and releasing motions, the switching polarity test was conducted.…”

High-Performance Piezoelectric Nanogenerator Based on Low-Entropy Structured Nanofibers for a Multi-Mode Energy Harvesting and Self-Powered Ultraviolet Photodetector

“…7,8 Since human activities produce mechanical energy, the electromechanical conversion characteristics of piezoelectric materials can be used to realize the collection of mechanical energy and its conversion to electrical energy. 9,10 Using this ubiquitous biomechanical energy source is one of the most reliable strategies for generating electricity for wearable devices.…”

“…In addition, the size and weight of the battery further limit the miniaturization of portable devices. Therefore, efforts are in progress to come up with alternatives to operate these wearable electronic devices by directly using the energy generated by human motion to achieve their ″self-powered″ property and sustainability. , Since human activities produce mechanical energy, the electromechanical conversion characteristics of piezoelectric materials can be used to realize the collection of mechanical energy and its conversion to electrical energy. , Using this ubiquitous biomechanical energy source is one of the most reliable strategies for generating electricity for wearable devices.…”

Microstructure Dependence of Output Performance in Flexible PVDF Piezoelectric Nanogenerators

“…Confronting the intemperate consumption of fossil energy and pollutants generated from their use [ 1 ], together with the rapid development of flexible and wearable electronics [ 2 ] and artificial intelligence, there is an urgent requirement to replace fossil fuels [ 3 ]. Until now, various new sources of energy have been successfully demonstrated, including solar, wind, geothermal, tidal, nuclear, and mechanical energies [ 4 ].…”