Gas-liquid two-phase flow-based triboelectric nanogenerator with ultrahigh output power

• DOI: 10.1126/sciadv.add0464
• Publication Date: 2022-11-30T18:59:08Z
• Authors: Yang Dong; Shiwei Xu; Chi Zhang; Liqiang Zhang; Daoai Wang; Yuanyuan Xie; Ning Luo; Yange Feng; Nannan Wang; Min Feng; Xiaolong Zhang; Feng Zhou; Zhong Lin Wang
• Keywords: Nanogenerator; Venturi effect; Contact electrification; Liquid phase

Solid-liquid triboelectric nanogenerators (SL-TENGs) have shown promising prospects in energy harvesting and application from water resources. However, the low contact separation speed, small area, long contacting time during solid-liquid electrification severely limit their output properties further applications. Here, by leveraging rheological of gas-liquid two-phase flow Venturi-like design, we circumvent these limitations develop a previously unknown flow-based TENG (GL-TENG) that can achieve ultrahigh voltage volumetric charge density 3789 volts 859 millicoulombs per cubic meter, respectively. With high-power 143.6 kilowatts 24-watt commercial lamp be directly lighted continuous-flow GL-TENG device. The high performance displayed SL-TENGs this work provides strategy for practical TENGs sensing