title: 3D fiber-based hybrid nanogenerator for energy harvesting and as a self-powered pressure sensor.
abstract: In the past years, scientists have shown that development of a power suit is no longer a dream by integrating the piezoelectric nanogenerator (PENG) or triboelectric nanogenerator (TENG) with commercial carbon fiber cloth. However, there is still no design applying those two kinds of NG together to collect the mechanical energy more efficiently. In this paper, we demonstrate a fiber-based hybrid nanogenerator (FBHNG) composed of TENG and PENG to collect the mechanical energy in the environment. The FBHNG is three-dimensional and can harvest the energy from all directions. The TENG is positioned in the core and covered with PENG as a coaxial core/shell structure. The PENG design here not only enhances the collection efficiency of mechanical energy by a single carbon fiber but also generates electric output when the TENG is not working. We also show the potential that the FBHNG can be weaved into a smart cloth to harvest the mechanical energy from human motions and act as a self-powered strain sensor. The instantaneous output power density of TENG and PENG can achieve 42.6 and 10.2 mW/m(2), respectively. And the rectified output of FBHNG has been applied to charge the commercial capacitor and drive light-emitting diodes, which are also designed as a self-powered alert system.
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
authors.forename: Xiuhan
authors.initials: X
authors.lastname: Li
authors.forename: Zong-Hong
authors.initials: ZH
authors.lastname: Lin
authors.forename: Gang
authors.initials: G
authors.lastname: Cheng
authors.forename: Xiaonan
authors.initials: X
authors.lastname: Wen
authors.forename: Ying
authors.initials: Y
authors.lastname: Liu
authors.forename: Simiao
authors.initials: S
authors.lastname: Niu
authors.forename: Zhong Lin
authors.initials: ZL
authors.lastname: Wang
mesh_terms: D011211:Electric Power Supplies; D049329:Nanostructures; D011312:Pressure
keywords: energy harvesting; fiber; flexible; hybrid; piezoelectric nanogenerator; triboelectric nanogenerator