Hand clapping inspired integrated multilayer hybrid nanogenerator as a wearable and universal power source for portable electronics

This paper reports a human skin-based wearable and hybrid triboelectric-piezoelectric nanogenerator (HTEPENG) for harvesting biomechanical energy from hand clapping. By integrating a polarized PVDF film between two nanopillar PDMS films, the hybrid nanogenerator produces two triboelectric outputs and one piezoelectric output simultaneously from a single clap.

• Development of a hybrid triboelectric-piezoelectric nanogenerator (HTEPENG) inspired by hand clapping.
• Smart integration of PVDF and n-PDMS to produce three simultaneous outputs.
• Demonstrated ability to drive a commercial pedometer and recharge various portable electronics.
• Unique characteristic of modulated multi-level outputs for potential logic device applications.

The HTEPENG was fabricated by encapsulating a polarized PVDF film between two nanopillar PDMS films. Its output performance was optimized through analysis of surface morphology and material coupling. A custom-designed power conversion and management system (PCMS) was used to test its ability to power and charge commercial devices.

The HTEPENG delivers a peak power density of 3.7 W/m² at a matched resistance of 23.08 MΩ. Using the PCMS, it successfully drove a pedometer and recharged a trimmer, Wi-Fi router, and smartphone. The device's multi-level output characteristic suggests potential applications beyond power generation.