A Facile Approach To Develop a Highly Stretchable PVC/ZnSnO3 Piezoelectric Nanogenerator with High Output Power Generation for Powering Portable Electronic Devices

Harvesting mechanical energy from the ambient environment with piezoelectric nanogenerators (PENGs) consisting of piezoelectric nanoparticles (NPs) and flexible polymer has drawn considerable attention for developing self-powered electronic devices. Here, a flexible, lead-free, solution processable PENG, composing piezoelectric ZnSnO3 NPs and plasticized PVC was fabricated by a simple solution casting method. The nanogenerator shows a VOC of ∼40 V, a ISC of ∼1.4 μA, and an overall power density more than ∼3.7 μW cm–2 at 35 wt % loading of ZnSnO3, and these values are the highest reported so far in the literature on the cubic ZnSnO3-based nanogenerator. We utilized the generated power for powering seven different color LEDs without any external energy storage unit. Also, the nanogenerator could charge a commercial capacitor (2.2 μF) to ∼6.7 V in ∼129 s, which can be used for powering wristwatch, mobile LCD screen, and calculator.