title: Case-encapsulated triboelectric nanogenerator for harvesting energy from reciprocating sliding motion.
abstract: Reciprocating motion is a widely existing form of mechanical motion in natural environment. In this work we reported a case-encapsulated triboelectric nanogenerator (cTENG) based on sliding electrification to convert reciprocating motion into electric energy. Patterned with multiple sets of grating electrodes and lubricated with polytetrafluoroethylene (PTFE) nanoparticles, the cTENG exported an average effective output power of 12.2 mW over 140 kΩ external load at a sliding velocity of 1 m/s, in corresponding to a power density of 1.36 W/m(2). The sliding motion can be induced by direct-applied forces as well as inertia forces, enabling the applicability of the cTENG in addressing ambient vibration motions that feature large amplitude and low frequency. The cTENG was demonstrated to effectively harvest energy from human body motions and wavy water surface, indicating promising prospects of the cTENG in applications such as portable and stand-alone self-powered electronics.
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States.
authors.forename: Qingshen
authors.initials: Q
authors.lastname: Jing
authors.forename: Guang
authors.initials: G
authors.lastname: Zhu
authors.forename: Peng
authors.initials: P
authors.lastname: Bai
authors.forename: Yannan
authors.initials: Y
authors.lastname: Xie
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
authors.forename: Ray P S
authors.initials: RP
authors.lastname: Han
authors.forename: Zhong Lin
authors.initials: ZL
authors.lastname: Wang
mesh_terms: D002214:Capsules; D004553:Electric Conductivity; D011211:Electric Power Supplies; D020342:Finite Element Analysis; D006801:Humans; D009038:Motion; D009068:Movement; D053758:Nanoparticles; D036103:Nanotechnology / Q000295:instrumentation*; D011138:Polytetrafluoroethylene / Q000737:chemistry
chemical_list: D002214:Capsules; D011138:Polytetrafluoroethylene