title: Radial-arrayed rotary electrification for high performance triboelectric generator.
abstract: Harvesting mechanical energy is an important route in obtaining cost-effective, clean and sustainable electric energy. Here we report a two-dimensional planar-structured triboelectric generator on the basis of contact electrification. The radial arrays of micro-sized sectors on the contact surfaces enable a high output power of 1.5 W (area power density of 19 mW cm(-2)) at an efficiency of 24%. The triboelectric generator can effectively harness various ambient motions, including light wind, tap water flow and normal body movement. Through a power management circuit, a triboelectric-generator-based power-supplying system can provide a constant direct-current source for sustainably driving and charging commercial electronics, immediately demonstrating the feasibility of the triboelectric generator as a practical power source. Given exceptional power density, extremely low cost and unique applicability resulting from distinctive mechanism and structure, the triboelectric generator can be applied not only to self-powered electronics but also possibly to power generation at a large scale.
authors.affiliation: 1] Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China [2] School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA [3].
authors.forename: Guang
authors.initials: G
authors.lastname: Zhu
authors.affiliation: 1] School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA [2].
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
authors.forename: Tiejun
authors.initials: T
authors.lastname: Zhang
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
authors.forename: Qingshen
authors.initials: Q
authors.lastname: Jing
authors.affiliation: 1] Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China [2] School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
authors.forename: Zhong Lin
authors.initials: ZL
authors.lastname: Wang