A novel PZT hollow structure utilized in high-performance piezoelectric nanogenerator.

The transformation of environmentally benign waste energy into functional electricity holds profound implications for advancements in human progress. Herein, we detail the synthesis of tubular nanofibers featuring a hollow architecture through an innovative combination of sol-gel processing and electrospinning techniques, followed by surface modification with dopamine. These engineered PZT hollow nanotubes, upon integration into PVDF piezoelectric films, serve as potent reinforcing agents that amplify the piezoelectric active phase within the PVDF matrix. The introduction of these hollow PZT nanostructures alters the polarization electric field distribution, thereby augmenting the polarization dynamics of PVDF and significantly enhancing the piezoelectric performance of the resultant PVDF/PZT composite films. Our novel nano-generator exhibits an exceptional balance between a high piezoelectric coefficient, superior output characteristics, and commendable stability. Notably, the piezoelectric constant (d 33) of Neat PVDF films experiences a substantial elevation from 9 pC N−1 to 20 pC N−1, representing an impressive enhancement of approximately 122 %. Furthermore, the power density achieves a value of 0.54 μW cm−2. This study introduces an effective approach to augment the productive output capability of composite nanogenerators, paving the way for sustainable energy harvesting technologies. [ABSTRACT FROM AUTHOR]