title: Grating-structured freestanding triboelectric-layer nanogenerator for harvesting mechanical energy at 85% total conversion efficiency.
abstract: A newly-designed triboelectric nanogenerator is demonstrated which is composed of a grating-segmented freestanding triboelectric layer and two groups of interdigitated electrodes with the same periodicity. The sliding motion of the grating units across the electrode fingers can be converted into multiple alternating currents through the external load due to the contact electrification and electrostatic induction. Working in non-contact mode, the device shows excellent stability and the total conversion efficiency can reach up to 85% at low operation frequency.
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30332-0245, USA; Department of Physics, Xiamen University, Xiamen, 361005, Fujian, China.
authors.forename: Yannan
authors.initials: Y
authors.lastname: Xie
authors.forename: Sihong
authors.initials: S
authors.lastname: Wang
authors.forename: Simiao
authors.initials: S
authors.lastname: Niu
authors.forename: Long
authors.initials: L
authors.lastname: Lin
authors.forename: Qingshen
authors.initials: Q
authors.lastname: Jing
authors.forename: Jin
authors.initials: J
authors.lastname: Yang
authors.forename: Zhengyun
authors.initials: Z
authors.lastname: Wu
authors.forename: Zhong Lin
authors.initials: ZL
authors.lastname: Wang
keywords: contact electrification; electrostatic induction; mechanical energy harvesting; self-powering technology; triboelectric nanogenerator