title: Freestanding Flag-Type Triboelectric Nanogenerator for Harvesting High-Altitude Wind Energy from Arbitrary Directions.
abstract: Wind energy at a high altitude is far more stable and stronger than that near the ground, but it is out of reach of the wind turbine. Herein, we develop an innovative freestanding woven triboelectric nanogenerator flag (WTENG-flag) that can harvest high-altitude wind energy from arbitrary directions. The wind-driven fluttering of the woven unit leads to the current generation by a coupled effect of contact electrification and electrostatic induction. Systematic study is conducted to optimize the structure/material parameters of the WTENG-flag to improve the power output. This 2D WTENG-flag can also be stacked in parallel connections in many layers for a linearly increased output. Finally, a self-powered high-altitude platform with temperature/humidity sensing/telecommunicating capability is demonstrated with the WTENG-flag as a power source. Due to the light weight, low cost, and easy scale-up, this WTENG-flag has great potential for applications in weather/environmental sensing/monitoring systems.
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Science , National Center for Nanoscience and Technology (NCNST), Beijing 100083, China.
authors.forename: Zhenfu
authors.initials: Z
authors.lastname: Zhao
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Science , National Center for Nanoscience and Technology (NCNST), Beijing 100083, China.
authors.forename: Xiong
authors.initials: X
authors.lastname: Pu
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Science , National Center for Nanoscience and Technology (NCNST), Beijing 100083, China.
authors.forename: Chunhua
authors.initials: C
authors.lastname: Du
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Science , National Center for Nanoscience and Technology (NCNST), Beijing 100083, China.
authors.forename: Linxuan
authors.initials: L
authors.lastname: Li
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Science , National Center for Nanoscience and Technology (NCNST), Beijing 100083, China.
authors.forename: Chunyan
authors.initials: C
authors.lastname: Jiang
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Science , National Center for Nanoscience and Technology (NCNST), Beijing 100083, China.
authors.forename: Weiguo
authors.initials: W
authors.lastname: Hu
authors.affiliation: Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Science , National Center for Nanoscience and Technology (NCNST), Beijing 100083, China.|School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States.
authors.forename: Zhong Lin
authors.initials: ZL
authors.lastname: Wang
keywords: arbitrary direction; high-altitude platform; triboelectric nanogenerator; wind energy