title: Novel Spiral-Like Electrode Structure Design for Realization of Two Modes of Energy Harvesting.
abstract: A planar spiral-like electrodes (PSE) based triboelectric generator has been designed for harvesting rotary mechanical energy to translate into electricity. The performance of the PSE-triboelectric generator with different cycles of spiral-like electrode strip at different rotating speeds is investigated, which demonstrates the open-circuit voltage and short-circuit current of 470 V and 9.0 μA at rotating speed of 500 r/min with three cycles. In addition, a novel coaxially integrated multilayered PSE-triboelectric generator is built, which can enhance the output of the power effectively. The short-circuit current, the open-circuit voltage, and output power reach to 41.55 μA, 500 V, and 11.73 mW, respectively, at rotating speed of 700 r/min. The output power of the multilayered PSE-triboelectric generator can drive 200 LEDs connected in antiparallel and charge a 110 μF commercial capacitor to 6 V in 23 s. Besides, due to the spiral-like electrode structure, the PSE-generator can work simultaneously in the modes of triboelectricity and electromagnetic induced electricity by sticking a small magnet on the rotating disk. The electromagnetic induced output power reaches to 21 μW at a loading resistance of 2 Ω at a rotating rate of 200 r/min. The spiral-like electrode structure not only broadens the electrode structure design but also adds a new function to the electrode.
authors.affiliation: †Department of Applied Physics, Chongqing University, Chongqing 400044, P. R. China.
authors.forename: Lin
authors.initials: L
authors.lastname: Chen
authors.affiliation: †Department of Applied Physics, Chongqing University, Chongqing 400044, P. R. China.
authors.forename: Hengyu
authors.initials: H
authors.lastname: Guo
authors.affiliation: †Department of Applied Physics, Chongqing University, Chongqing 400044, P. R. China.
authors.forename: Xiaona
authors.initials: X
authors.lastname: Xia
authors.affiliation: †Department of Applied Physics, Chongqing University, Chongqing 400044, P. R. China.
authors.forename: Guanlin
authors.initials: G
authors.lastname: Liu
authors.affiliation: ‡Chongqing Engineering Research Center of Graphene Film Manufacturing, Chongqing 401329, P. R. China.
authors.forename: Haofei
authors.initials: H
authors.lastname: Shi
authors.affiliation: †Department of Applied Physics, Chongqing University, Chongqing 400044, P. R. China.
authors.forename: Mingjun
authors.initials: M
authors.lastname: Wang
authors.affiliation: †Department of Applied Physics, Chongqing University, Chongqing 400044, P. R. China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Xi
authors.affiliation: †Department of Applied Physics, Chongqing University, Chongqing 400044, P. R. China.
authors.forename: Chenguo
authors.initials: C
authors.lastname: Hu
keywords: electromagnetic generator; multilayered; planar spiral-like electrode; rotary mechanical energy; triboelectric nanogenerator