Work

Piezoelectric-induced piezo ionic effect enabling high-performance flexible sensors and batteries for intelligent target shooting training

Year: 2025

Type: article

Abstract: Flexible wearable electronic devices function as pivotal interfaces for environmental interaction, yet their widespread application encounters formidable bottlenecks due to limited energy supply and multifunctionality. Herein, the piezo-ionic effect has been innovatively applied to polyacrylamide (PAM)/polyvinylidene fluoride UiO-66 MOF(PPM) composite membranes for multifunctional sensing in stress monitoring and optical response, as well as dendrite-free flexible zinc-ion batteries. Exploiting the piezoelectric-induced piezo-ionic effect, the sensor achieves remarkable performance with ultra-fast response/recovery times (10 ms/18 ms) and an impressive maximum electrical output of 23.64 μA. The high-performance sensing mechanism has been confirmed through finite element simulations. Furthermore, the polarized electric field of the fiber instigates ion deposition, enabling the composite membrane to be utilized in zinc-ion batteries for the first time, effectively inhibiting zinc dendrite formation. Consequently, the flexible battery exhibits a symmetrical cycle of up to 2000 h and maintains a stable high capacity of 150 mAhg −1 . Additionally, the multifunctional sensing system constructed with composite membrane is applied to monitor light responses, facial expressions, and motion, while also providing intelligent guidance for multi-scene-target accuracy exercises with an accuracy exceeding 94 %. The composite membrane stands as a promising material with substantial potential to propel significant advancements in the development of flexible electronic devices.

Source: Chemical Engineering Journal

DOI: 10.1016/j.cej.2025.162523