Triboelectric Power Generation from Heterostructured Air‐Laid Paper for Breathable and Wearable Self‐Charging Power System

AbstractA breathable and wearable self‐charging power system is developed by integrating paper‐based triboelectric nanogenerator (P‐TENG) and supercapacitor (P‐SC). The felt side and wire side of highly porous and mechanically robust air‐laid paper are utilized as the triboelectric pair of the P‐TENG, which not only shows remarkable flexibility and cloth‐like air permeability (333 mm s−1), but exhibits exceptional wet stability (85% voltage retention after four soaking cycles). To match the triboelectric output, the self‐discharge behavior of the P‐SC is comprehensively evaluated for effectively storing the triboelectricity. The service behavior of the self‐charging system is investigated when the P‐TENG is immersed in water or subject to partial damage. Considering the cost‐effective materials and scalable process for the fabrication of the self‐charging power units, a promising approach for the development of wearable self‐powered electronics is provided here.