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

Nanoscale Research Letters

Chung Wung Bark¹  Rui He¹  Thi My Huyen Nguyen¹  Sangmo Kim² 

[1] Department of Electrical Engineering, Gachon University, 13120, Seongnam-si, Gyeonggi-do, Republic of Korea;School of Intelligent Mechatronics Engineering, Sejong University, Gwangjin-gu, 05006, Seoul, Republic of Korea;

关键词: Poly(vinylidene fluoride);    BLT;    Particle size;    Piezoelectric nanogenerator;   

DOI  :  10.1186/s11671-021-03567-2

来源: Springer

【 摘 要 】

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.

【 授权许可】

CC BY