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Energy Harvesting System according to Moisture Absorption of Textile and Efficient Coating Method as a Carbon Black

섬유 고분자의 수분 흡수에 따른 에너지 하베스팅 발전 소자 및 이를 위한 카본 블랙의 효율적인 코팅법

  • Choi, Seungjin (Department of Fiber System Engineering, Yeungnam University) ;
  • Chae, Juwon (Department of Fiber System Engineering, Yeungnam University) ;
  • Lee, Sangoh (Department of Clothing and Fashion, Yeungnam University) ;
  • Lee, Jaewoong (Department of Fiber System Engineering, Yeungnam University)
  • 최승진 (영남대학교 파이버시스템공학과) ;
  • 채주원 (영남대학교 파이버시스템공학과) ;
  • 이상오 (영남대학교 의류패션학과) ;
  • 이재웅 (영남대학교 파이버시스템공학과)
  • Received : 2021.11.10
  • Accepted : 2021.11.25
  • Published : 2021.12.27

Abstract

Generating electricity by using water in many energy harvesting system is due to their simplicity, sustainability and eco-friendliness. Evaporation-driven moist-electric generators (EMEGs) are an emergent technology and show great potential for harvesting clean energy. In this study, we report a transpiration driven electro kinetic power generator (TEPG) that utilize capillary flow of water in an asymmetrically wetted cotton fabric coated with carbon black. When water droplets encounter this textile EMEG, the water flows spontaneously under capillary action without requiring an external power supply. First carbon black sonicated and dispersed well in three different solvent system such as dimethylformamide (DMF), sodiumdedecylbenzenesulfonate (SDBS-anionic surfactant) and cetyltrimethylammoniumbromide (CTAB-cationic surfactant). A knitted cotton/PET fabric was coated with carbon black by conventional pad method. Cotton/PET fabrics were immersed and stuttered well in these three different systems and then transferred to an autoclave at 120 ℃ for 15 minutes. Cotton/PET fabric treated with carbon black dispersed in DMF solvent generated maximum current up to 5 µA on a small piece of sample (2 µL/min of water can induce constant electric output for more than 286 hours). This study is high value for designing of electric generator to harvest clean energy constantly.

Keywords

References

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