그래핀 코팅 텍스타일 전극-유전체 종류별 마찰전기나노발전소자 제조 및 전기적 출력에 관한 연구

• Published in: 한국섬유공학회지 Vol. 56; no. 6; pp. 350 - 359
• Main Authors: 김혜림, Hyelim Kim, 이선희, Sunhee Lee, 김한성, Hanseong Kim
• Format: Journal Article
• Language: Korean
• Published: 한국섬유공학회 31.12.2019
• Subjects: dielectric materials; electrical output performance; graphene; textile electrode; triboelectric nanogenerator; textile electrode; triboelectric nanogenerator; dielectric materials; electrical output performance; graphene
• ISSN: 1225-1089; 2288-6419

This study presents basic research on the fabrication of graphene coated textilebased 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 10 4 Ω/sq and that of the dielectric materials were within 10 12 Ω/sq. The current density of the GR showed the maximum value at 0.012 μA/cm 2 . 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.