biostudies-literatureHeo DMinistry of Trade, Industry & Energy(MOTIE, Korea)National Research Foundation of Koreae02278https://www.ebi.ac.uk/biostudies/studies/S-EPMC12376523biostudies-literatureUnknown12(30)In the field of triboelectric nanogenerators (TENGs), the application of a thin lubricant layer on the contact surface and its maintenance for long-term cycling remain important challenges for improving the mechanical-electrical stability of TENGs. Herein, a simple and innovative approach is proposed to solve this dilemma using commercial oil-absorbing sheets and oil infusion steps. In particular, a wind-driven nano-oil-barrier-based fluttering triboelectric nanogenerator (NF-TENG) is developed. The nano-oil barrier (of nanoscale thickness) of NF-TENG is thoroughly analyzed using atomic force microscopy imaging and electrical-mechanical measurement/calculation results. Compared with other control groups, only NF-TENG maintains 95% output performance from 100% initial output performance, and device damage is minimized even after 970,000 cycles. The mechanism of NF-TENG and its differences from previous studies are established. NF-TENG is optimized and studied for various design variables and wind speeds. NF-TENG generated a peak power of 468 µW with 100 Hz and an average power of 166 µW at optimum load resistance, under a breeze wind speed of 6 m s^-1. NF-TENG demonstrates its applications in two real-life scenarios: 1) wind harvesting at a rooftop vent pipe for outdoor temperature-humidity sensing, and 2) wind harvesting during bicycle riding for safety light illumination.Advanced science (Weinheim, Baden-Wurttemberg, Germany)Nano-Oil-Barrier-Based Fluttering Triboelectric Nanogenerator.PMC12376523RS-2024-004545612023R1A2C2006170RS‐2024‐00454561RS-2022-00155791Heo DKim SLee SHur JCho HHong JCha KChoi JChoi MfalseNano-Oil-Barrier-Based Fluttering Triboelectric Nanogenerator.In the field of triboelectric nanogenerators (TENGs), the application of a thin lubricant layer on the contact surface and its maintenance for long-term cycling remain important challenges for improving the mechanical-electrical stability of TENGs. Herein, a simple and innovative approach is proposed to solve this dilemma using commercial oil-absorbing sheets and oil infusion steps. In particular, a wind-driven nano-oil-barrier-based fluttering triboelectric nanogenerator (NF-TENG) is developed. The nano-oil barrier (of nanoscale thickness) of NF-TENG is thoroughly analyzed using atomic force microscopy imaging and electrical-mechanical measurement/calculation results. Compared with other control groups, only NF-TENG maintains 95% output performance from 100% initial output performance, and device damage is minimized even after 970,000 cycles. The mechanism of NF-TENG and its differences from previous studies are established. NF-TENG is optimized and studied for various design variables and wind speeds. NF-TENG generated a peak power of 468 µW with 100 Hz and an average power of 166 µW at optimum load resistance, under a breeze wind speed of 6 m s^-1. NF-TENG demonstrates its applications in two real-life scenarios: 1) wind harvesting at a rooftop vent pipe for outdoor temperature-humidity sensing, and 2) wind harvesting during bicycle riding for safety light illumination.2025-01-01T00:00:00Z2025 Aug2026-05-09T19:08:48.494Z2026-04-08T01:10:24.31ZS-EPMC123765234039179810.1002/advs.202502278