title: A flexible and biocompatible triboelectric nanogenerator with tunable internal resistance for powering wearable devices.
abstract: Recently, triboelectric energy nanogenerators (TENGs) have been paid the most attention by many researchers to convert mechanical energy into electrical energy. TENGs usually have a simple structure and a high output voltage. However, their high internal resistance results in low output power. In this work, we propose a flexible triboelectric energy nanogenerator with the double-side tribological layers of polydimethlysiloxane (PDMS) and PDMS/multiwall carbon nanotube (MWCNT). MWCNTs with different concentrations have been doped into PDMS to tune the internal resistance of triboelectric nanogenerator and optimize its output power. The dimension of the fabricated prototype is ~3.6 cm(3). Three-axial force sensor is used to monitor the applied vertical forces on the device under vertical contact-separation working mode. The Prototype with 10 wt% MWCNT (Prototype I) produces higher output voltage than one with 2 wt% MWCNT (Prototype II) due to its higher dielectric parameter measured by LRC impedance analyzer. The triboelectric output voltages of Prototype I and Prototype II are 30 V and 25 V under the vertical force of 3.0 N, respectively. Their maximum triboelectric output powers are ~130 μW at 6 MΩ and ~120 μW at 8.6 MΩ under vertical forces, respectively.
authors.affiliation: National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano Electronics, Shanghai Jiao Tong University, Shanghai, 200240, China.
authors.forename: Yanbo
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano Electronics, Shanghai Jiao Tong University, Shanghai, 200240, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Yang
authors.affiliation: National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano Electronics, Shanghai Jiao Tong University, Shanghai, 200240, China.
authors.forename: Jingquan
authors.initials: J
authors.lastname: Liu
authors.affiliation: National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano Electronics, Shanghai Jiao Tong University, Shanghai, 200240, China.
authors.forename: Xingzhao
authors.initials: X
authors.lastname: Wang
authors.affiliation: National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano Electronics, Shanghai Jiao Tong University, Shanghai, 200240, China.
authors.forename: Luxian
authors.initials: L
authors.lastname: Wang
authors.affiliation: National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano Electronics, Shanghai Jiao Tong University, Shanghai, 200240, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Chen
authors.affiliation: National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano Electronics, Shanghai Jiao Tong University, Shanghai, 200240, China.
authors.forename: Chunsheng
authors.initials: C
authors.lastname: Yang
mesh_terms: D011211:Electric Power Supplies; D004581:Electronics / Q000295:instrumentation* / Q000379:methods*; D004867:Equipment Design; D036103:Nanotechnology