Particle Size Effect of Lanthanum-Modified Bismuth Titanate Ceramics on Ferroelectric Effect for Energy Harvesting

Abstract

Piezoelectric nanogenerators (PNGs) have been studied as renewable energy sources. PNGs consisting of organic piezoelectric materials such as poly(vinylidene fluoride) (PVDF) containing oxide complex powder have attracted much attention for their stretchable and high-performance energy conversion. In this study, we prepared a PNG combined with PVDF and lanthanum-modified bismuth titanate (Bi4−XLaXTi3O12, BLT) ceramics as representative ferroelectric materials. The inserted BLT powder was treated by high-speed ball milling and its particle size reduced to the nanoscale. We also investigated the effect of particle size on the energy-harvesting performance of PNG without polling. As a result, nano-sized powder has a much larger surface area than micro-sized powder and is uniformly distributed inside the PNG. Moreover, nano-sized powder-mixed PNG generated higher power energy (> 4 times) than the PNG inserted micro-sized powder.

Optoelectronic Properties of Ferroelectric Composites of Bi3.25La0.75Ti3O12 (BLT) and Co-Doped BLT Thin Films Modified by FeCo-Doped BLT

“…The BLT/FeCo-BLT and Co-BLT/FeCo-BLT composite films had ferroelectric temperatures of 650 • C and 700 • C, respectively, which were significantly higher than that of the base target. These high ferroelectric properties were maintained until 650 • C, indicating that the modification of the BLT and Co-BLT films with FeCo-BLT improved the thermal stability of the ferroelectric properties of the films [24][25][26][27]. The BLT/FeCo-BLT and Co-BLT/FeCo-BLT composite films exhibited favorable ferroelectric properties and thermal stability.…”

A Review of Plasma-Synthesized and Plasma Surface-Modified Piezoelectric Polymer Films for Nanogenerators and Sensors

“…Therefore, the development of piezoelectric polymers with a high dielectric constant is necessary to industrialize their application. Many studies have been directed toward developing piezoelectric polymers, including polyacrylonitrile (PAN), PVDF-based copolymers, and polymer nanocomposites, such as piezoelectric nanoparticles (NPs) [ 13 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ]. These piezoelectric polymers are mainly prepared using wet-based conventional techniques, such as inkjet printing, screen printing, electrospinning, and spin–coating [ 29 , 30 ].…”

Structure and Dielectric Properties of Poly(vinylidenefluoride-co-trifluoroethylene) Copolymer Thin Films Using Atmospheric Pressure Plasma Deposition for Piezoelectric Nanogenerator

“…Thus, the development of piezoelectric polymers with a high dielectric constant is necessary to industrialize the application of piezoelectric polymers. Many research efforts have been directed toward developing piezoelectric polymer materials, such as copolymers and polymer nanocomposites containing piezoelectric ceramic nanoparticles [ 15 , 16 , 17 , 18 ]. In previous studies, only material properties were examined [ 15 , 16 , 17 , 18 ].…”

“…Many research efforts have been directed toward developing piezoelectric polymer materials, such as copolymers and polymer nanocomposites containing piezoelectric ceramic nanoparticles [ 15 , 16 , 17 , 18 ]. In previous studies, only material properties were examined [ 15 , 16 , 17 , 18 ]. These piezoelectric polymers can be mostly fabricated by using a conventional method, such as inkjet printing, screen printing, electrospinning, and spin-coating [ 19 , 20 ].…”