Bio-waste onion skin as an innovative nature-driven piezoelectric material with high energy conversion efficiency

Naturally driven bio-waste and biocompatible onion skin base piezoelectric nanogenerator with high output performance (output voltage and area power density of ≈ 18 V, and ≈ 1.7 μW/cm2) and high energy conversion efficiency (≈ 61.7%) has been fabricated through simple homespun device fabrication method. More details on the materials and application can be found in the manuscript.335