Interfacial Polarization‐Enhanced Ultrahigh Performance Liquid Droplet Nanogenerator

The enhanced LSTENG introduced in this study is noteworthy for its sophisticated design, incorporating a sandwich architecture and a needle electrode combined with a composite polymer film. This design leverages the phenomenon of interface polarization, achieved through careful manipulation of Dielectric Properties, to substantially boost the device's energy conversion efficiency. The study highlights the LSTENG's power density reaching levels significantly higher than its predecessors, thereby marking a pivotal advancement in the field of energy harvesting.

Abstract

Liquid droplet nanogenerators showcase significant potential in harvesting energy from natural sources rain or industrial processes involving liquids. However, their utility is limited by their low power output and the complexity of methods required to enhance efficiency. Here, the study presents an enhanced performance of the LSTENG, which leverages polarized surface to significantly enhance its output efficiency. The improved LSTENG design highlights with utilizing the effects of interface polarization through strategically contrasting dielectric distributions and the approach of ion surface treatment to modify the interface, achieves a superior instantaneous peak power density of 448 W m⁻². This performance doubles the previous highest research benchmark, and it is attained without employing any pre-charge techniques. This new approach represents a pivotal advancement in energy harvesting landscapes, positioning LSTENG as a highly promising energy source with a greatly expanded range of potential applications.