fig2
![Trilayer PVDF nanocomposites with significantly enhanced energy density and energy efficiency using 0.55Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>-0.45(Sr<sub>0.7</sub>Bi<sub>0.2</sub>)TiO<sub>3</sub> nanofibers](https://image.oaes.cc/3c330cfe-7b0f-4ea6-a8c6-45fecdee8858/5366.fig.2.jpg)
Figure 2. (A) X-ray diffraction pattern of 0.55Bi0.5Na0.5TiO3-0.45(Sr0.7Bi0.2)TiO3 (BNT-BST) nanofibers. (B) Scanning electron microscopy (SEM) image before sintering. (C) Thermogravimetric analysis of electrospinning nanofibers. (D) SEM image after sintering. (E) Diameter distribution. (F) Piezoelectric force microscopy image of BNT-BST nanofibers.