Liquid–Liquid Triboelectric Nanogenerator for Harvesting Distributed Energy

• DOI: 10.1002/adfm.202208393
• Publication Date: 2022-10-17T18:17:37Z
• Authors: Ruotong Zhang; Haisong Lin; Yi Pan; Chang Li; Zhenyu Yang; Jingxuan Tian; Ho Cheung Shum
• Keywords: Contact electrification; Nanogenerator; Rainwater Harvesting; Liquid water; Electrostatic induction

Abstract As one of the most widely distributed water resources, rainwater contains tremendous energy that cannot be effectively utilized by conventional electromagnetic generators. Triboelectric nanogenerators (TENGs) represent a method to convert trivial mechanical into electricity based on contact electrification. Benefiting from large and replenishable interfaces in liquid–liquid systems, TENG further promises efficient charge transfer. However, limited understanding electrification has restricted its development. In this study, mechanisms various systems is comprehensively investigated thus with optimized materials structures harvest demonstrated. The proposed generates high density (3.63 µC L −1 ) output stability (crest factor ≈1.1) long effective time. Based direct current characteristics, harvested can fed directly electronic devices self‐powered rainfall sensor also implemented. This study highlights promise all‐liquid green passive sensors, offering new perspective devices.