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http://dx.doi.org/10.12772/TSE.2019.56.350

Fabrication and Electrical Output Performance of Triboelectric Nanogenerators Composed of Graphene Coated Textile Electrode-Dielectric Material Types  

Kim, Hyelim (Research Institute of Convergence Design, Dong-A University)
Lee, Sunhee (Department of Fashion Design, Dong-A University)
Kim, Hanseong (Department of Organic Material Science and Engineering, Pusan National University)
Publication Information
Textile Science and Engineering / v.56, no.6, 2019 , pp. 350-359 More about this Journal
Abstract
This study presents basic research on the fabrication of graphene coated textile-based triboelectric nanogenerators (T-TENGs). Graphene coated textiles, both with and without hot-pressing (PGR or GR, respectively), play an important role in electrodes. In this study, polyethylene terephthalate (PET) fabrics, polyurethane (PU) membranes and polytetrafluoroethylene (PTFE) film were used as dielectric materials. The resulting surface roughness was confirmed after the PGR was decreased by approximately 0.15 mm. The surface resistivity of the GR and PGR were within 104 Ω/sq and that of the dielectric materials were within 1012 Ω/sq. The current density of the GR showed the maximum value at 0.012 ㎂/㎠. The electric fields of the fabricated electrodes, GR and PGR, were 6.0 V/cm and 9.6 V/cm, respectively, and the J-E curves showed hysteresis characteristics as the electric field increased. The output voltage was measured according to the dielectric type to confirm the applicability of graphene coated textile electrodes in T-TENGs. Improved output voltage was observed upon using PTFE films as dielectrics as compared to other dielectrics, regardless of the type of graphene coated textile electrode. Moreover, the performance improved when the GR had a larger surface roughness value. Therefore, the electrical output voltage performance of T-TENGs using GR with PTFE film produced the best results and should be applied to T-TENGs in complementary experiments.
Keywords
graphene; textile electrode; dielectric materials; triboelectric nanogenerator; electrical output performance;
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