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Facile fabrication and characterization of arch‐shaped triboelectric nanogenerator with a graphite top electrode
Author(s) -
Lee Soo Hyun,
Ko Yeong Hwan,
Yu Jae Su
Publication year - 2015
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201431480
Subject(s) - materials science , electrode , triboelectric effect , nanogenerator , graphite , polydimethylsiloxane , indium tin oxide , composite material , substrate (aquarium) , polyethylene terephthalate , fabrication , nanotechnology , optoelectronics , layer (electronics) , chemistry , oceanography , piezoelectricity , geology , medicine , alternative medicine , pathology
We fabricated and characterized the polydimethylsiloxane (PDMS)‐based triboelectric nanogenerators (TENGs) by employing a top electrode made of graphite. For a flexible electrode, the graphite was prepared on aluminum (Al) tape by a simple rolling process. By pressing a roller on the Al tape attached to a graphite substrate, the graphite flakes were entirely coated on its glue side for the graphite top electrode. For fabricating the TENG, the micro‐pillar patterned PDMS as a triboelectric material was laminated on an indium tin oxide (ITO) coated polyethylene terephthalate (PET) substrate as a bottom electrode. Under the external pushing forces of 0.1–0.3 kgf, the measured open‐circuit voltage ( V oc ) and short‐circuit current ( I sc ) of the TENG with the graphite top electrode were improved compared to the TENG with the ITO top electrode due to the superior electrical property. For the TENG with the graphite top electrode, the averaged V oc and I sc values were ∼1.80 V and 120.4 nA, respectively, at a frequency of 1 Hz (cf. V oc ∼0.97 V and I sc ∼69.3 nA for the TENG with the ITO top electrode). The effect of pushing frequency on the output performance of the fabricated TENG was also investigated.