| 초록 |
Piezoelectric nanogenerators have gained tremendous attention from industry and academia because they can harvest energy from mechanical actions to power electric devices instantly. In this work, PDMS-based flexible nanogenerators with different contents of MWCNT (0.0-5.0 wt%) and BaTiO3 nanofiber (10-50 wt%) were fabricated, where the BaTiO3 nanofiber with tetragonal structure was manufactured via electrospinning and following calcination process. The electrical, dielectric and piezoelectric properties of the nanogenerators were then investigated systematically. The PDMS/BaTiO3/MWCNT nanogenerator with 40 wt% BaTiO3 nanofiber and 2 wt% MWCNT generated a relative high output voltage of 3.73 V, current of 1.37 μA, and power of 0.33 μW. The harvested energy was feasible to light up a commercial LED and charging a capacitor to 0.8 V, revealing the potentiality in powering self-sufficient nanodevices and wireless electronics. |
